In order for swimming in a pool to be enjoyable and healthy, the water temperature in it must meet certain standards. Too cold water will not allow you to relax and get a pleasant feeling from swimming, and too warm water, especially when the pool is indoors, will create the effect of a steam room, forming condensation on the walls and ceiling of the room. Therefore, the temperature of the water in the pool is important and must be at an optimal value.

Temperature standards

Under favorable microclimate conditions in the room where the pool is located, a person feels comfortable if all components of the room have an optimal temperature - walls, air and floor, humidity. And in addition, the ventilation system works correctly and efficiently. This also applies to water, the temperature in the pool must be optimal.

An incorrect balance of climate indicators can have a negative impact on human health:

• Hypothermia and high humidity in combination can cause the immune system to decrease, and this will lead to hypothermia and, as a consequence, colds;
• Water that is too cold can also cause cramps;
• Overheating can contribute to disruption of heat exchange processes, which becomes especially dangerous when factors such as high temperature and high air humidity are combined;
• With high humidity, there may be a lack of oxygen.

Attention! The water temperature in the pool is considered comfortable if it is no more than three degrees less than the air temperature.

Depending on the type of reservoir, the normal temperature of the water in the pool varies and is for different types:

Interesting! Swimming pools located in bath complexes stand apart, and the water temperature in them can range from 15 to 35°, depending on need

Having your own swimming pool on private property is now commonplace, and its purpose is entertainment and relaxation, not sports or treatment. In adult private reservoirs, the recommended water temperature is about 25-28°; for children's pools its value should be 2-3° higher.

Attention! You can change the water temperature in the pool with your own hands if necessary in each specific case.

As a rule, for open reservoirs the optimal temperature parameter is 21-25 °, which is both easy to maintain and easy to provide if this requires heating the water in the pool.

Heating Methods

In most cases, the water is heated for comfortable bathing. This can be done either using homemade methods or using products and substances offered by various manufacturers.

Electric heater

The principle of using such a unit is that, passing through a tubular-type electric heater (TEH), the heat from the dielectric heated by electricity is transferred to water.

How to connect an electric heater to a pool is shown in the video:

Installing such a unit is not difficult. The mini-pump is connected to the hole through which water enters the heating element and returns to the pool already heated. According to the principle of operation, it resembles a regular boiler, which is installed in houses and apartments. The advantages of such a unit include:

• Low cost;
• Easy to connect and operate;
• Fast heating of small volumes.

This method also has some disadvantages:

• High power consumption;
• Impossibility of use for volumes greater than 300 m3.

Heat exchanger

If the house has a source of hot water supply, then you can safely use a pool heat exchanger for heating. The operating principle of such a device is to exchange water from various sources with heat.

The heating technology is quite simple - it occurs due to the passage of water through a spiral, which is located inside the heat exchanger body. The incoming boiling water from the house water supply quickly heats the water coming from the pool.

The installation of such a unit is carried out in the circuit between the pump and the pool, and if the pool has a large volume, then two heat exchangers should be used.

Advantages of heating water this way:

• Independence from power sources;
• Can be used for large capacity pools.

There are also disadvantages - it can be difficult to set up a heating boiler that supplies hot water to the house system.

Heat pump

Depending on the design, a heat pump can use water, air or soil for heating.

The operating principle of such a device is shown in the video:

The main advantages of using a heat pump to heat a pool include:

• Ability to heat a large volume of water;
• Low energy consumption;
• Versatility.

The disadvantages of such installations include the still high cost of the equipment, as well as the ability to obtain heat from sources only at the required temperature conditions.

solar collector

This device uses solar energy for heating and operates on the principle of a solar battery. Water enters the collector tubes using a pump, and when it reaches the required temperature, it flows back into the tank. And a new portion enters the hoses. Among the advantages of using such units are:

• Loyal cost;
• Easy to install and operate;

But one of the main disadvantages of such a unit is its suitability only in sunny weather.

Budget ways

Among the simple and affordable options for heating water in a swimming pool at the dacha, there are also ways to practically cost no money. One of these is using a kettle or boiler to heat water.

This method is advisable to use when the volumes of heated water are not too large, for example, for a children's pool this option is the most suitable.

Thermal blanket

It is a special coating that is stretched over the surface of the water, retaining solar heat without repelling it. With the help of such a device, the water temperature on a sunny day can increase by 4-5 degrees in a couple of hours.

Attention! To ensure uniform heating using such a blanket, you should turn on the pump, which will ensure mixing of the upper and lower layers.

Ease of operation and low price make this method quite popular, and also helps prevent dust and debris from getting into the pool. But other heating methods are often combined with it.

Heating with wood

A wood-burning water heater for a pool is relevant in a country house, where you can use firewood for this. The principle of its operation is similar to the operation of a heat pump, but the water is heated by fire and, having reached a certain temperature, is returned to the pool.

The advantages of such heating include:

• Low cost of both the unit itself and consumables;
• Economical operation;
• Easy installation.

It will not be possible to use this method without firewood, which can be attributed to its disadvantages.

Conclusion

The correct water temperature in an artificial reservoir is the key to a comfortable stay. Depending on what means and devices the owner has, in most cases it will not be difficult to ensure heating to the required temperature.

The ambient temperature greatly influences the water temperature in an outdoor pool. At an air temperature of 18-20 degrees, a person still feels more or less comfortable, however, few people would want to swim at such a temperature. Often, such conditions during the warm period in the middle zone and to the north make up the lion's share. In this regard, the issue of heating water in the pool is relevant.

To eliminate problems with maintaining the required water temperature, the necessary heating equipment is selected already at the design stage. In this article we will help you get comfortable with this problem and choose the appropriate model based on type and power.

Water heating devices operate on the principle of heat transfer “from hot to cold”. The installations differ in the principle of obtaining heat for heating.

2. Heat exchangers

It consists of a housing, inside of which two circuits are mounted. The primary circuit (heating circuit) is designed to circulate water from the boiler. Secondary circuit - for circulating water from the pool. Heat exchange occurs between the circuits as follows. The pool water picks up heat from the water in the heat exchanger. The cooled water passes through the boiler again, is heated and returns to the heat exchanger to transfer heat to the water from the pool. And so on in a vicious circle until the water in the pool reaches the set temperature. Then, depending on the settings, the heater either turns off or continues to operate in the mode of maintaining the required temperature.

The time required to heat the water to the set temperature depends on the volume of the pool and the power of the heater.

Heat exchanger housing made from

1. composite plastic,
2. of stainless steel,
3. titanium.

Heating circuit made from

1. stainless steel (suitable for price/quality ratio for fresh water pools),
2. titanium (for seawater pools),
3. nickel,
4. cupronickel.

The drop in heater performance in case of deviation from the specification data can be analyzed using graphs (diagram A, B)

3. Solar collectors (solar batteries)

They are heated by the sun's rays and this heat is used to heat the water in the pool. has a system of thin tubes.

4. Electric heaters

They are alternative devices to heat exchangers. Operating principle: a tubular electric heating element (TEH) is placed in the housing. It transfers heat to flowing water. There are no particular differences between the models.

When choosing an electric heater, the guideline is:

1. output power,
2. the material from which the body is made,
3. the material from which the heating element is made.

When using sea water, heating elements are selected from titanium, nickel or cupronickel.

Installation features

The electric heater is connected to the circuit so that the incoming pipe is directed vertically downwards. In this case, the device will always be filled with water and even if the automation fails, the heating element will not burn out.

Practice shows that electric heaters are used for pools up to 12 cubic meters of open type and up to 20 cubic meters of closed type.

The task of maintaining the required temperature in the pool is not so easy to solve. The formula for calculating the heating time of water does not take into account its important feature - heat loss during evaporation. Because of this, heating the water takes longer, despite the fact that heating already takes a lot of time.

In this regard, the project includes heating aids:

1. coating the pool walls with heat-insulating spraying,
2. system use .

5. Heat pumps for heating water

Designed to cool or heat water in a swimming pool by converting atmospheric air energy into heat.

Installed outdoors.

Advantages

Very simple connection - just connect the water and power supply to the heat pump.

- embedded system automatically sets the optimal operating modes of the compressor and fan to obtain maximum efficiency by measuring the ratio of air temperature and coolant. Control is carried out by a digital remote control; there are several automatic settings for maintaining the temperature.

Installed sensors and protection systems: protection against low and high coolant pressure, high coolant temperature sensor, water flow sensor, low air temperature shutdown system, automatic defrosting system.

Conclusions:

1. Water-to-water heat exchangers, electric heaters and solar panels are mainly used to heat pool water. The latter option is used mainly as an additional heating source.

2. The choice of model is based on the heater power.

3. A saltwater pool requires a heater made of anti-corrosion materials.

4. It takes a long time to heat up the pool water

6. Procedure for calculating the operating time of the heat exchanger

Let's estimate the operating time of the heat exchanger for heating the pool. To do this, we will use the empirical formula (without taking into account deviations from the available power and heat losses):

t = 1.16 * V * T / P, where,

t - the required time in hours,

V is the volume of water in the pool in cubic meters,

T - required temperature difference in degrees,

P - declared power.

Calculation example.

Using this formula, we will calculate in advance the required heating time for your pool with a heat exchanger of the declared power. For example, the water in the pool is 20 degrees, but it needs to be heated to 26 degrees, i.e. by 6 degrees, with a pool volume of 30 cubic meters and a heat exchanger power of 6 kW.

t = 1.16 * 30 * 6 / 6, t = 34.8 hours.

7. Determination of the required heater power

Here are some generalized formulas for the correct selection of a water heater.

Determination of water heater power

Type and place of use of the water heater	The value of the required water heater power
Heat exchanger for outdoor swimming pool (power in kW)	Equal to the volume of the pool (cubic meter)
Heat exchanger for indoor swimming pool (power in kW)	Equal to ¾ of the pool volume (cubic meter)
Electric heater for outdoor pool (power in kW)	Equal to ½ pool volume (cubic meter)
Electric heater for indoor pool (power in kW)	Equal to 1/3 of the pool volume (cubic meter)
Solar panels	The total area of ​​the collectors must be equal to the area of ​​the pool itself

Calculation of water heater power is described in various literature. We will use formulas from the book “Planung von Schwimmbadern” by C. Saunus

The power of the heat exchanger is determined from the conditions for the primary heating of water in the pool. Typically, the initial heating time is 2-4 days with continuous operation of the heater.

Qs = V*C*(tB - tK)/Za + Zu*S

Qs - heater power (W)

V - pool volume (l)

C - specific heat capacity of water, C = 1.163 (W/kgK)

tB - required water temperature (degrees Celsius)

tK - temperature of filled water (degrees Celsius)

S - water surface area (sq. meter)

Za - required heating time

Zu - heat loss (per hour)

When calculating using this formula, it is conditional - 1 kg = 1 liter.

Thus, we looked at modern devices for heating pool water. They have different operating principles, shape, technical characteristics and price. The choice of the right one for your pool is up to you, and you can also contact the specialists in our company and receive extremely competent advice.

How to quickly heat water in a frame pool?

You bought a frame pool, filled it with water and, of course, you want to swim right away. But you need to wait quite a long time until the water warms up under the sun's rays. How can you heat water quickly?

A comfortable water temperature for an adult is 24 +24°C, and for children from +28°C. There are many ways and devices for heating water - use:

Flow heaters;

Heat exchangers;

Heat pumps:

Solar collectors;

Special shelters;

Or a folk heating method called “Snail from a Hose.”

Let's look at each of these methods.

Flow-through electric heaters

These are devices designed to heat water. Passing through the heating element, it quickly heats up and returns to the pool. Storage capacity is not provided. The temperature is regulated only by water pressure.

Depending on the power, heaters range from 3.5 to 18 kW. They are mainly used for small-volume reservoirs, since they consume quite a lot of electricity. Their disadvantage is that the temperature of the water entering the electric heater must be at least 18 degrees.

Heat exchangers

They are more economical since they do not require electricity to operate. They operate from a heating system and are capable of heating large volumes of water. But the difficulty of using them lies in the fact that it is necessary to design the heating system so that during the non-heating season the heat exchanger can function autonomously.

Hot water moves along the coil and gives off its heat to the cool water of the pool. The circulation pump is equipped with an automatic system that automatically turns the hot water supply on and off.

Solar collectors

This is truly the most environmentally friendly, but expensive way to heat water. Receiving the sun's rays, the panels heat the water circulating inside and return it to the pool. The disadvantage is that in cloudy weather you will have to swim in cold water or abandon this idea altogether.

Heat pumps

This is an expensive device that is difficult to install, but can heat both a swimming pool and the entire house. Consuming only 1.5 kW, the pump produces about 6 W of heat.

Special coating

Covering the pool at night with a special blanket (awning), which often comes with a frame pool, is the simplest and cheapest option. There are also bubble covers, the water under them heats up by 3-4 degrees per day. Covers not only retain heat, but also prevent debris from getting into the pool.

"Snail from a Hose"

To heat water in this traditional way, you will need a long garden hose, which you need to lower one end into vodka and connect the other end to a filter pump. Place the twisted hose in the sun, and the water passing through it will quickly warm up. Here you can learn more about this method of heating.

Let's sum it up

The cheapest way is to use a bubble cover or make a snail. If the pool is not large, you can buy an electric heater. Other methods are more expensive, so it’s worth thinking about the feasibility of using them.

Using equipment for heating a pool at the dacha, it is possible to maintain the desired temperature. There are sanitary standards that must be followed. The minimum permissible level is + 24 o C. Children's bathing is allowed only at a mark of 28 o C.

Heating a swimming pool at a summer cottage is necessary in the Russian climate

Temperature table

Electric flow heaters contain built-in heating elements. They are made of metal or anti-corrosion alloy. Water passing through them heats up more and more each time. The case is made of plastic, stainless steel or titanium. Powered by network. Models differ in power.

Electric heating installation diagram

Electric heaters are popular. Designed for small volume bowls.

Devices of this type have a maximum power of 18 kW. They are capable of heating up to 36 cubic meters of liquid.

Leaders of sells

Intex is a company that produces swimming pools and accessories for them. Water heaters are suitable for inflatable ponds.

A manually controlled thermostat is built in to regulate the heating temperature.

Bestway is the second most popular company. The device heats water by 1.5 o C in an hour. The equipment is low-power and designed for small volumes. You can buy models with or without a built-in thermostat.

Electric water heater Bestway

Pahlen is an instantaneous water heater with a power of up to 18 kW. For units above 3 kW, a connection to an electrical network with a voltage of 380 Volts is required.

The package includes a relay and thermostat. There is no need to regulate the water. This happens automatically. There is an overheating protection system. Maximum heating up to 40 o C.

Pahlen for water heating

Heating using a heat exchanger

• black collectors intensively absorb sunlight;
• from the energy received, water reaches high temperatures;
• after warming up to the desired degree, the circulation pump starts.

Models with three-way automatic valves are available. They ensure uninterrupted circulation of coolant throughout the system.

Worth knowing! It is advisable to use solar collectors in those regions where there are many sunny days. In cloudy weather, efficiency decreases.

Installed solar panels for water heating

A similar device can be made using a regular black hose. You will need about 40 meters of material, a circulation pump and a flat area:

• the hose is twisted into spirals and laid at an angle to the sun on the surface;
• a pump is connected to it;
• the structure is connected to the pool.

After building a pool in the yard or at the dacha, it is necessary to ensure that a comfortable temperature is maintained at a certain time, and for this you can do it yourself by heating the water in the pool.

Any temperature is suitable for hardening, but if you are not a “walrus”, then it should be 25-28 degrees. In hot summers, the water warms up on its own.

In cooler months, it is heated by special ovens. Swimming pools are often large in volume, so a lot of energy will be needed.

To use energy efficiently, it is important to choose the right device.

Why is water heating needed?

In summer there are not always bright and warm days. In cloudy times, the water does not warm up to a comfortable temperature. If the pool is located indoors, the sun's rays do not reach the water at all.

This is not a reason to deny yourself the pleasure of splashing in the water. The pool should not depend on the weather, so it is worth installing special equipment that will heat the water.

You can do this yourself.

Heating devices will make it possible to achieve several goals:

• You can swim in the pool at any time of the day;
• the water temperature is adjusted depending on the wishes of the swimmers;
• the swimming season is extended by several months.

Various devices can be used to heat water. If your house has water heating, you can install a boiler yourself.

As an option, you can use collectors powered by the sun, a heat pump, or a fireplace where a heat exchanger is built in. If desired, you can combine several methods.

The question of how to heat the water must be resolved at the stage of constructing the pool. It is important to calculate the heat balance of the building, how much hot water will be needed, and climatic conditions.

Only after analyzing all the components should you make a choice in favor of one or another heating device.

Methods for heating pool water

Heating water can be done in several ways. Let's look at them in more detail to make a more suitable option for you.

Heating by heat exchanger

To heat the water in the pool, you can construct a heat exchanger with your own hands. Hot water flows through it and, flowing through pipes laid along the walls of the pool, heats the contents.

The heat exchanger must be made of stainless steel or titanium to resist corrosion.

The body itself, which is in contact only with the heat carrier, can be made of cheaper metal. You can also use plastic.

The heat exchanger can be made as part of a separate circulation circuit. So it will not depend on the performance of the components of the entire water supply and heating system.

It's not hard to do it yourself. The pipes that carry hot water to and from the heat exchanger must be connected to the distribution manifolds.

Circular pump

It is better to install a circular pump to achieve complete autonomy. Pool water is specially prepared, cleaned and disinfected.

All the liquid that is in the pool passes through the circuit during circulation, where it is heated to a certain temperature.

Thus, water goes through the full cycle several times a day. You can construct such a system with your own hands.

When using such a system, you should definitely install two filters. They will perform preliminary cleaning and basic cleaning.

There must also be a pump, a control valve, and a chemical dispenser that will disinfect the water.

The water is heated only after it has been filtered, but disinfection is carried out after heating. This is done to ensure that chemical reagents do not affect the heater.

Using the valve, you can regulate the operation of the heating element. So, you can refuse to filter water if it is of good quality.

In this way, energy savings will occur, which is spent on operating the filters.

The water in the pool is heated in several stages. The first stage is heating the liquid to a comfortable temperature. The remaining stages are maintaining the temperature throughout the bowl.

The power of the heater will vary depending on what the water temperature is. The lower it is, the higher the power will be.

Solar heating

You can heat the water in the pool with your own hands almost free of charge, not counting the cost of installing the structure. When heating water, such a system does not use electrical energy.

Water heating devices are mounted on the basis of solar collectors.

In single-circuit designs, water for heating is supplied directly to the collector. Such installations are used to heat water at air temperatures above 0 degrees.

If the temperature drops to below zero, the system will be damaged because the water in the system will freeze.

It is advisable to install such systems in a country house where people come to live only in the summer.
Double-circuit systems can be used all year round at any temperature.

The system will not freeze during frost because antifreeze passes through the manifold. It is he who prevents the water from freezing.

In such an installation, the heat collection circuit is separated from the consumption circuit. If the house is fully supplied with energy from this system, then the pool will also consume it.

To heat the water in the pool using a double-circuit solar installation, the heat exchanger is connected to a storage tank. It should be made of high quality stainless steel.

Thus, the main heat generator will work much less, and accordingly less energy will be spent.

The solar system can be built on the basis of vacuum or flat collectors. They are based on the installation of a series of copper tubes.

If the water is treated with chemicals, then such a system will not work.

To heat the water in the pool, you can make an installation based on plastic solar collectors.

The design can be any type: flat, in the form of a series of tubes. The material most often used is polyethylene or polypropylene, after which it is painted black.

This material is suitable for use in flow-through structures.

Solar systems with plastic collectors are not suitable for use in the cold season, unlike vacuum or flat ones.

Without glazing, a large amount of heat is lost and at low temperatures it is very difficult to heat water.

If you plan to use the pool in the warm season, then such installations will be very useful.
It is advisable to use a solar collector to heat water in combination with a heat pump.

So, when the temperature drops below zero, the solar installation is switched off and the pump is connected.

Heat saving

The heat of the water depends on the thermal losses of the pool. They occur as a result of many processes: conduction, convection, evaporation of water from the surface.

The moment steam is formed, heat is absorbed. Therefore, water needs to be added periodically, and so that it is not cold, it needs to be warmed up.

To reduce heat loss, it is worth covering the surface of the pool if no one is using it.

To do this, you can equip a special coating made of polymer material.

You can pull special blinds. There are transparent coatings. They allow the sun's rays to reach the water, causing it to heat up. But the heat does not leave the pool; the water remains warm for a long time.

To save heat in the pool, you need to choose the right lining inside the pool. The color of the coating should not reflect the sun's rays, but absorb them.

If the pool is indoors, a water cover will also help. After all, water evaporation is influenced not only by temperature, but also by humidity and movement around the pool.

Heating by fuel boilers

If there is no gas supply in the house and it is not possible to install expensive equipment or solar panels, the only option left is to heat the water using fuel boilers.

Such stoves operate on fuel oil, wood, and other types of fuel.

Water in boilers is heated in various ways:

• the boiler heats the heat exchanger, which in turn heats the water;
• the water is heated directly in the boiler;
• The water is heated in a stove and then poured into the pool.

Before installing such a boiler with your own hands, you need to make calculations, create a project, and ensure fire safety.

How can you create a heat pump with your own hands?

Would you think that a device based on the technology of a regular refrigerator could provide high-quality heating not only for a swimming pool, but for the entire house?

All this is performed by a conventional heat pump, which, moreover, can be made independently at home.

Homemade Frenetta heat pump

If you understand the principles of its operation and design features, you will be able to cope with its creation yourself.

Which is very useful and convenient for arranging your living space.

1 Operating principle

The technology behind the heat pump. in essence, it is not much different from the technology of operation of a conventional refrigerator.

As you know, a refrigerator, to ensure a low temperature, pumps out heat from the chambers and transfers it outside through radiators.

The technology of a heat pump is based on the same principle: to heat rooms, it “pumps out” heat from the ground or water, processes it and releases it into the heating system of a house, greenhouse or swimming pool.

The refrigerant (freon or ammonia) circulates through a system consisting of an internal and external circuit.

The external circuit is located in the heat intake environment. Such a medium can be air, earth, or water.

Essentially, any natural environment has a sufficient amount of dissipated thermal energy, which is collected by the refrigerant and transferred to the system for recycling. To start the process, it is necessary for the heat exchanger to increase its temperature by 4-5 degrees. This is a very important point, since the heat exchanger directly affects all conditions around it.

Heated swimming pool - do-it-yourself luxury and comfort

The first block, the evaporator, transforms the heat exchanger from a liquid state to a gas form. This is possible due to the fact that freon, at low ambient pressure, has a very low boiling point.

Next, from the evaporator, freon in gaseous form enters the compressor, where the gas is compressed, as a result of which its temperature rises sharply. After this, the gas enters the third block - the condenser. In it, the gas gives up its temperature to the water - the coolant of the heating system of the house; after cooling, it returns to liquid form, and repeated circulation is performed.

The main characteristic of the productivity of a heat pump for heating is the conversion coefficient, which depends on the ratio of the thermal power produced by the pump to the amount of thermal energy consumed.

Diagram of operation of a standard heat pump

1.1 Heat pump design

The design of classic heat pumps is divided into two main circuits - external and internal.

The heat exchanger plays a very important role in them, as the main provoking factor. The external circuit consists of pipes through which a heat exchanger (refrigerant) circulates.

Such a circuit may have different implementation methods and locations, but it always performs only one function - to circulate the refrigerant in the heat intake environment and move the heat exchanger to the compressor.

The external circuit pipes are made of plastic or other materials with high thermal conductivity.

The external circuit - the pump itself, consists of a condenser, compressor, evaporator and pressure reducing valve.

In addition, there is a hydrodynamic heat pump, the design of which differs from a conventional heat pump for heating.

A hydrodynamic pump consists of a power unit (motor), a heat generator, and a coupling that transfers the energy produced by the drive to the generator, where the working fluid is heated for heating.

1.2 Types and their differences

Depending on the type of environment in which the heat pump draws energy, the following types of heat pumps are distinguished:

An air heat pump is the most budget-friendly option for alternative heating; it can be installed with your own hands, since for its operation there is no need to equip a complex external circuit system.

Standard connection diagram for a domestic heat pump

However, the air pump has one significant drawback, which makes its use in our climate unjustified - as the air temperature drops, its efficiency sharply decreases.

If you want to make your own heat pump to heat your pool, an air-to-water pump is the best option.

Moreover, for a pool this option would be preferable, since it is quite easy to work with and it is extremely practical.

The external circuit for heat intake is located in a non-freezing reservoir - artificial or natural.

In terms of heat transfer, water is the most efficient medium. In practice, the use of surface reservoirs is unjustified, since they freeze in the cold season.

Maximum stability and efficiency of heat pump heating is achieved when using groundwater.

For this purpose, special wells are created in which the external contour of the system is located.

Despite the fact that this heating technology is the most labor-intensive, its use makes sense, since the temperature of groundwater does not change significantly at different times of the year.

The best option for heating a swimming pool or small living spaces.

Soil is used to collect heat, which necessitates the creation of collectors (for horizontal placement of external circuit pipes) or shallow wells (for vertical placement - 1 linear meter of well provides 40-60 watts of heat).

This option is used everywhere - from heating the pool to heating the entire house.

The technology gets its name “brine” from the fact that a special non-freezing liquid is poured into the pipes.

The process of assembling a homemade heat pump from copper tubes and windings

There is also a Frenette heat pump - it works using a different technology and has nothing in common with conventional heat pumps. This pump consists of two cylindrical containers - a large and a smaller one, while the smaller container is placed inside a large vessel.

The free space between them is filled with oil.

The outer cylinder is fixedly fixed, and the inner container is connected to the drive shaft, during the operation of which, due to the friction forces arising during the rotational movements of the cylinders, the oil is heated to a very high temperature and transferred to the heating radiators.

Such a mechanism is quite efficient, and at the same time, it can be made with your own hands without any problems.

2 We make and install heat pumps with our own hands

It is quite possible to make a heat pump with your own hands, but for this you need to find a good compressor.

You can do this by visiting some local appliance repairman, where, by gutting the old air conditioner, you will get a very high-quality compressor for a small amount (their service life is much longer than the average lifespan of air conditioners).

As a condenser, you can use a stainless steel tank, approximately 100 liters.

And for the circuit through which the heat exchanger will circulate, thin copper plumbing pipes are perfect.

Do-it-yourself heat pump - manufacturing stages:

1. Using a corner or L-shaped brackets, we attach the compressor to the wall in the place where the heat pump will be located.
2. Next, we make a coil from copper tubes - we wrap them around a cylinder of a suitable shape. Make sure that the winding pitch is identical across all coils.
3. The tank is cut into two parts, a coil is inserted inside, after which the tank is welded back together.

   At the same time, several threaded inlet holes are created in it - at the top and bottom, through which the outer tubes of the coil are brought out.

4. As an evaporator, we use an ordinary plastic barrel into which the internal circuit pipes are inserted (or any other container whose volume is identical to the condenser tank).
5. Conventional PVC pipes are used to transport heated water.

Winding for a homemade heat pump made of steel

To make a Frenette heat pump with your own hands, we need to acquire the following materials:

• Steel cylinder (choose the diameter based on the pump power you need for heating: the larger the working surface, the more efficient the device will be);
• Steel discs with a diameter 5-10% smaller than the cylinder diameter;
• Electric motor (it is best to initially select a drive with an extended shaft, since disks will be installed on it);
• Heat exchanger - any technical oil.

The number of revolutions that the engine can produce will determine the temperature to which the Frenette pump can heat water for heating a house or swimming pool.

In order for the water in the radiators to warm up to 100 degrees, the drive must provide 7500-8000 rpm.

We place the power unit shaft on bearings inside a steel cylinder. The place where the shaft enters the cylinder must be reliably sealed, since the presence of even the slightest vibrations quickly disables the mechanism.

Working disks are mounted on the motor shaft. The required distance between them can be set by screwing nuts after each disk. The number of disks is determined depending on the length of the cylinder - they must evenly fill its entire volume.

We drill two holes in the upper and lower parts of the cylinder: heating pipes will be connected to the upper one, into which oil will be supplied, and a return pipe will be connected to the lower hole to return used oil from the radiators.

The entire structure is fixed on a metal frame.

After the unit is assembled, the cylinder is filled with oil, the heating pipes are connected to it, and the connections are sealed.

Factory-built heat pump

The Frenetta heat pump has a very high efficiency, which allows it to be used effectively in any heating systems.

It can be used to heat any utility premises, garages, and residential buildings. In addition, due to its compact size, such a homemade pump is perfect for heating a pool or “warm floor”.

But remember that when heating a pool and other large containers of water, you need a pump of sufficient power, otherwise you will simply use it for other purposes and will not get the desired results.

2.1 Installation of heat pumps

The installation features of heat pumps depend, first of all, on the method of placing the external circuit.

1. Geothermal heat pumps.

   For the vertical installation method, wells with a depth of 50 to 100 meters are created, into which a special probe is lowered. For horizontal laying, a trench of the same length or a pit is created in which the pipes are laid parallel to each other. The pipes are laid in the ground to a depth of one and a half meters.

2. Water-to-water pumps: the external circuit is laid at the bottom of the reservoir and led to the heat pump.
3. Air-to-water: a unit with external circuit pipes is installed on the roof or wall of the building (in appearance it is difficult to distinguish it from the external box of the air conditioner), and is connected to the heat pump indoors.

Based on materials from the site: http://byreniepro.ru

The experience of recent years shows how wise it is to install a heat exchanger for heating pool water with your own hands - the required electric or gas power... its presence will ensure optimization of costs for a given coolant temperature. The most popular installation method is a gas boiler.

The implementation of the heat exchanger with various parts ensures optimal operation of the entire system. The use of such devices is not explained only in the pool, since if necessary, it can be installed on any body of water, heating, in particular, it applies to places for bathing children (the temperature coefficient of the assembly must be constant).

Such heating equipment allows you to maintain the recommended temperature in an artificial tank, in which pool visitors feel comfortable.

Calculation and selection of heat exchanger

When selecting, you must specify the following parameters:

• Swimming pool tank capacity;
• Water temperature coefficient set directly in the network, as well as at the outlet from the circuit of the equipment used;
• Time characteristic - how many hours it takes to heat water (often this process takes 3-4 hours).

  There is the following relationship: more heated water in the pool lasts longer, less heat exchanger power and its price;

• The amount of water in the pool passes through the device through a certain device. If you have pumps (circles) that produce a container for clean water and its circulation, the flow of the working fluid of the heat exchanger can be taken as the ratio specified in the technical data sheet of the pump.

  We offer pool water heating

Heat exchanger connection

The installation process of the heat exchanger determines certain properties:

• The device is installed before the chlorine purification system, but after the pump and special filters;
• Experts recommend purchasing and using heat exchangers with titanium plates when there are high concentrations of chlorine or salt in the water.

  Such a device will be more stable under these operating conditions.

Horizontal layout is a priority for manufacturers of water heating devices. Since the housing material is made of stainless steel, the heat exchangers can also be titanium and plastic. The stainless steel and plastic body on the heat exchanger is suitable for using the heating device in fresh water.

Principle of operation

The design itself consists of two circuits.

One circuit contains water from the pool, and the other circuit contains a cooling device (provides the necessary heating). The boiler, special boiler (heat) is connected to the second circuit. Such devices heat the refrigerant to the desired temperature.

Features when purchasing and choosing

• Heat exchangers have a wide range of prices and this product can be found from different suppliers;
• Most often, the device you buy contains a detailed description of the functions to help you understand;
• Models can be made from different materials.

  The final solution will help you improve the conditions for your future business.

Home » Apartment and cottage » Other

How to heat water in a pool at the dacha

Building a swimming pool in a country house is always fraught with certain difficulties. These include heating the water in the pool, because it may not always have a comfortable temperature for a person. According to sanitary and generally accepted standards, the preferred water temperature for humans is 24 degrees and above. But this does not mean that everyone will feel good in such water.

Children are advised to stay in a pool where the water temperature is not lower than 28 degrees.

It is problematic to obtain such indicators without the use of special instruments, because the water initially supplied to the pool is much colder.

And swimming in it is not very pleasant, and children are completely prohibited. Therefore, after the pool is ready for use, it’s time to think about methods for heating the water. For swimming pools, it is allowed to use various special heating devices, each with its own operating specifics.

Heating pool water using electricity

Some craftsmen use a powerful boiler to heat the water in the pool. But using this method, much more electricity is consumed than when using a special heater.

Also, the use of open heating devices in swimming pools can result in electric shocks.

If you decide to heat water in this way, make sure that the heating element does not come into contact with the walls of the pool, and immerse the boiler in water only when it is turned off.

Do-it-yourself heating of pool water

Also, while it is working, it is forbidden to put your hands in the water.

Heating water using electricity will be optimal for owners of swimming pools that are not very large, otherwise the cost of maintaining it may be extremely high due to excessive energy consumption.

Heating pool water using the sun

A less expensive way to heat pool water is to use solar energy. This is a very important factor for those places where the weather is predominantly sunny and clear throughout the year.

For this purpose, a solar collector is used, which should be placed so that the sun's rays fall on it for at least 4–5 hours during the day.

This allows you to maintain the desired temperature in the pool or increase it, when necessary, by 6-10 degrees. It is not at all difficult to make it according to the scheme described here.

What is the principle of operation of the collector?

On its surface there are sensors that monitor the level of lighting and heat input.

At the moment when they determine that there is quite a lot of heat on the collector, the control valve is sent to direct the flow of water from the pool to the collector, the water enters it, heats up there and then returns to the pool.

If the water corresponds to the set temperature, then immediately after filtration it enters the pool, bypassing the collector.

Heating pool water using fire

This method uses a heat exchanger in the form of a coil, inside which water moves and is heated in the pool by redistributing the heat received from an open flame.

The movement of water is carried out thanks to a pump.
The principle of operation of the heat exchanger is primitive: cold water is heated using a fire lit in a coil.

At the same time, it is very easy to obtain water at the desired temperature, knowing the volume of water and the power of the heat exchanger. After the initial heating, the heat exchanger can only maintain the designated water temperature.

To save energy resources, before building a pool, it is recommended to carry out a list of measures aimed at maximizing heat loss reduction.

Outdoor pool water heats up more slowly and cools down faster. And to eliminate this, you need to buy an awning to cover the pool. And another thermal insulation of the walls, as well as the bottom of the pool, with protective coatings that slow down the cooling process of the water, will eliminate additional costs and problems related to the maintenance of the pool, reduce the cost of heating the pool and increase its service life.

How to heat water in a swimming pool

The question of how to heat the water in the pool must be decided at the stage of its construction. It is then that it is necessary to insulate the bottom and walls. And although most of the heat “leaves” with the evaporation of water and radiation from the surface into the colder atmosphere, without these measures it is impossible to achieve an effective and inexpensive (relatively) increase in temperature.

Anyone who has an inflatable or frame pool, standing on a sand bed or on a lawn, while cleaning the pool, probably noticed: the ground underneath is simply icy. This is where the heat goes. So thermal insulation of the bottom and walls is not at all an excess. Therefore, pay more attention to this issue.

In general, in any store that sells swimming pools and equipment, there will also be devices for heating water.

These are heat exchangers connected to a source of warm water (into the DHW circuit of a heating system or boiler), heat pumps, electric heaters (storage and flow-through), solar systems.

Heat exchangers for swimming pools

This is what one of the pool heat exchangers looks like

This is a metal cylinder through which hot water flows.

It is connected to a hot water source. Often this is a boiler hot water heating circuit or an instantaneous water heater. There may be other sources. Who will adapt how?

Here the question immediately arises: why do we need the heat exchanger itself? After all, you can directly take water from the pool, supply it to the heater and discharge the heated water. In principle, such a scheme is possible, but the problem is that the water in the pool contains many different impurities: from chlorine and chemicals to various tiny suspended particles.

So with this scheme the heat exchanger will quickly clog.

Another point is that in open air the reservoir contains a fairly large amount of oxygen, due to which the heat exchanger in the boiler or flow-through heater will quickly oxidize and fail. That is why a small volume of coolant is circulated through a loop with a special heat exchanger for the pool.

One type of heat exchanger is a coil.

You can make it yourself, and also connect it to the system with your own hands. For those who did heating in the house, this is not a problem. But coils are effective only on small volumes. They will warm up a small pool for children in a short period of time, but they won’t be able to handle a dozen cubes.

Scheme of organizing water heating in the pool

Electric heaters

Electric pool heaters are ordinary water heating elements with high-power thermostats.

They are of the accumulative type - this is when water is pumped into a tank of a sufficiently large volume, where heating elements are installed, and from there it is removed, but at a much higher temperature.

Instantaneous electric pool water heater

Electric pool heaters are also of the flow-through type.

It is built into the pool water treatment system after the filter. Purified water is supplied to it, and then, after heating, it enters the pool through nozzles.

Electric pool heaters can operate on a 220 V or 380 V network. This largely depends on the power. It is calculated as follows: for outdoor pools, 0.5-1 kW is taken per cubic meter, for indoor pools - 0.3-0.5 kW.

Since the volumes of water are large, heating costs are also more than significant.

You need to heat tons of water, which requires high power and, accordingly, high energy costs.

How to make a heated pool with your own hands

Plus, not every site has the opportunity to additionally turn on 3-18 kW of electrical equipment. And this is in addition to everything that works in the house, as well as the equipment that is necessary to maintain the pool, although it (not counting the electric water heater) “draws” a little.

Heat pumps for heating water

Heat pumps take heat from external heat sources, convert it and transfer it to the heated environment. To increase the temperature of the water in the pool, air-to-water devices are often used.

In this case, energy is taken from the air and transferred to water.

Externally, the device resembles an air conditioner. Most of these devices are so automated that once you connect it, set the mode and desired temperatures, you don’t touch it again.

Control is possible from a remote control or a panel on the case.

The heat pump looks like the outdoor unit of an air conditioner

Heat pumps operate from a 220 V network and consume 1-2 kW depending on the power generated.

But in this case the energy is not used to heat water, but not to pump heat from one medium to another - it is needed to operate the motor and compressors. By spending only 1-2 kW, you can get 5-12 kW - depending on the type of system.

Like most automated and technologically complex devices, heat pumps cost a lot. About 130-180 thousand rubles.

Solar systems

To heat the water in the pool, it is not always enough just sunlight falling on the surface.

But you can use solar heat from other surfaces. For this purpose, solar systems - collectors and vacuum tubes - have long been used. Tubular heaters are more efficient, but collectors of sufficient area can provide the required temperature.

True, large areas are needed, but a lot of water is heated.

Solar pool heating is effective on clear days

For indoor pools, the size of solar collectors should be about 60-70% of the surface of the pool's water surface, for open ones - 80-100%.

Then the water will be warm. But only on a sunny day. This is one of the main disadvantages of solar systems. The second is the considerable cost of the devices. Smaller than heat pumps, but still sufficient, especially considering that larger devices are needed.

But solar collectors are not difficult to make with your own hands: the materials are available, the technology is simple, there are plenty of examples. One of them is presented in the video. But the area will be too small for this pool.

In order for the heating to be significant, several of these are needed. Anyone can make such a water heater with their own hands. With no exceptions.

There is an inexpensive surface solar heater for the pool "Intex". This is a two-layer black PVC film, welded so that it forms a labyrinth for water. This mat, which floats on the surface of the pool, is supplied with water by a pump. Walking through the labyrinth, it heats up due to the fact that the black surface absorbs heat well.

It comes out already having a much higher temperature. For greater efficiency, water is taken from the bottom of the pool, where the water is colder.

Floating rubber solar collector.

Very inexpensive option

This water heater can be used in swimming pools that are located in open, sunny areas. Suitable for pools with a volume of no more than 30 m 3. The temperature can be increased by 3-5° depending on the weather.

Do-it-yourself heating of pool water

A swimming pool, even if it is not very large, is not a cheap pleasure. But without heating the water, it is far from always comfortable. Not everyone has the means or desire to buy equally expensive devices to raise the water temperature.

So homemade craftsmen come up with different pool heaters that don’t require a lot of money.

The most accessible fuel we have is firewood.

And it would be strange if there were no means of heating the pool with wood. We have not seen any industrial analogues, except perhaps adapting a wood-burning stove with a water jacket for this purpose. And there are a lot of homemade units.

The basis of all water heating devices in wood-fired pools is a coil

The main idea is that a metal coil is located inside the firebox, and water from the pool is supplied to the inlet using a pump.

Passing through a coil heated by a flame, it heats up and is discharged back through a second hose or pipe.

One of the DIY devices for heating pool water with wood

The main task is to select the water supply speed so that it does not boil in the pipe under any conditions. Therefore, it is advisable to take a pump that is powerful enough. You can use a standard pool pump or a circulation pump.

Quite risky, witty

There are several such devices in the photo.

In one, the coil is hidden in a tank in which the fire is built. Smoke is discharged through a hole in the lid. The system will be more efficient if you make a chimney. You can use the heat even more fully if you make a water jacket. It can be on the body, it can be on the chimney, or it can be both here and there.

In another option, a square container is welded for a small inflatable pool. The principle is the same.

The implementation is a little different.

A square container with a coil and a fire inside

There is an even simpler option: a coil, inside of which a fire is built. This device can even be used while hiking.

Only somehow it will be necessary to solve the problem of discharging hot water. It is possible to use heat-resistant hoses or a piece of metal-plastic pipe for heating.

It’s very convenient when hiking or traveling - you are always provided with warm water

There is an example of making an electric pool heater with your own hands.

A heating element was used for the boiler, and an original design was invented for fixing it in the body of an old car foot pump.

See the video for details.

A very simple and interesting way to make solar heating of pool water more efficient. It requires a minimum of money and a little time. You will need plastic hula hoops, thick black film, a soldering iron, and a knife.

The idea is not new: a black film floating on the surface of the water heats up and transfers heat to the water.

Heating is more efficient since dark objects absorb more solar energy.

Very simple hula hoop solar light collectors with welded black film

The work consists of the following: lay the film evenly on the hula hoop, and use a soldering iron to fuse the plastic and the film pointwise.

It is advisable not to burn the hoop, as it should float and not sink. Melt in a circle, with a distance of 10-15 cm. The film should hold quite tightly. You need to make several holes in the middle - you don’t want air to get in.

Therefore, you need to turn the hoops with the side into the water on which the film is stretched.

These circles are laid out on the surface.

The larger the area they occupy, the faster they heat the water. They are easy to lay out - scattered on the surface. Collect them too - they drove them in one direction and stacked them at the side.

Heat preservation

It’s clear how to heat water in a pool. There are both factory and homemade heaters.

If a canopy, for some reason, is not an option, you can reduce losses with the help of a blanket. There are films floating on the surface. They have many air bubbles and an opaque surface. The film is spread on the surface in the evening and removed after the water has reached a comfortable temperature.

In addition to floating films, there are awnings that are placed on top of the structure.

But they are quite inconvenient - even if the pool is three meters wide, pulling or rolling up the awning alone is quite problematic. But there are not always helpers. However, you can also use awnings - they are quite effective. Moreover, they can easily be replaced by, say, a piece of tarpaulin, thick (preferably opaque) film, etc.

For a rectangular pool, to make it easier to straighten and assemble the awning, light slats can be attached along one of the sides (short) at a distance of 1-1.5 meters.

Then holding on to the slats makes it easier to lay out and assemble the blanket.

Based on materials from the site: http://baniwood.ru

What's the best way to get warm water in your cottage pool?

There is a swimming pool in the country, but the water temperature in it is not always comfortable. For swimming, the water must be warm, at least + 24 ° C. And for children, for example, swim in the children's pool with a slide.

they even need a temperature above + 28 ° C. Wait until it warms up in the sun - it takes a long time and is not always justified. Therefore, warm water is necessary. The question is how to heat the water in the swimming pool in Dachau.

Let's look at the most popular methods of heating pool water, and we will evaluate the feasibility of using one or another method.

Heating Methods

Electric flow heaters

Specially designed for heating swimming pool water. In short, its working principle is that water passing through a special cylinder (TEN) heats up quickly.

They are equipped without a tank. Increase or decrease the water pressure, you can adjust its temperature.

Devices are divided into classes depending on power consumption. For a small pool with a power of 3.5 kW. There is such a model. Its peculiarity is that the temperature of the “incoming” water is preferably +18 degrees.

There are also models with a power of 5.7 kW, etc. up to 18 kW.
Pros:

• safety and effectiveness;
• Ideal for frames and small inflatable pools.

• Separate wiring is often required;
• not suitable for large pools (low power, 35 m3 will not warm up);
• impressive electricity bills. Consumption of 3 kW/hour is also quite expensive.

  Heating large volumes will take a long time and heating will be expensive;

• the water must be of a certain quality (soft, salt impurities - minimal).

Check the lock settings on the corrugated cardboard.

Heat exchangers

You don't need electricity.

They operate from a common heating system. This is a light bulb with an internal coil. Hot water enters the coil from the heating system. And from the side, wash it with pool water. The device is equipped with a circulation pump. It is regulated by a special valve, the other by a thermostat. The required temperature is set by the owner on the thermostat, and then the automation works.

Heat exchanger power is from 13 to 200 kW.

Manufacturers offer vertical and horizontal models made of stainless steel and titanium. The choice should be based on the amount of water that needs to be heated. Sometimes the use of more heat exchangers is justified.

How to manually heat the water in the pool with your own hands:

The first water heating time should be 28 hours (maximum heat exchanger power should be maximum), so there is no instrumental collapse.

• The heat exchanger is easy to use;
• Powerful device suitable for large swimming pools.

Disadvantage: dependence on the heating system.

If you want to use the device in the summer when the house is not heated, the entire system must be designed so that the heater can only heat the heating water in the pool.

Solar collectors

The water is heated by the sun. Solar systems are different. In swimming pools, selective rectangular plates are more often used in direct sunlight. There is cooling water inside, when it heats up, the circulating pump pumps it into the pool.

The photo shows how to heat water in a pool without electricity using a solar collector:

• quick effect;
• The device is easy to use.

Considering: in cloudy weather the efficiency decreases.

Place the collector in a well-lit place: the sun's rays should fall for several hours (4-5) a day!

Heat pumps

Working on the principle of a refrigerator is just the opposite.

The system requires heat from the environment (ground, pond, air). You can connect it to any electrical network.

How to heat a swimming pool? All possible ways and possibilities

The pump is economical, consumes 1-1.25 kW, produces up to 6 kW of heat. Due to high costs, the device is not yet popular.

• works only in warm weather (from +5 degrees Celsius);
• The device is expensive, with expensive equipment and its installation.

  Use the system only to heat the pool water - it is cost effective. This will be justified if the house is heated in this way.

Special coating

It is very simple and effective to use a special blanket. The heat-saving coating is a film with bubbles (perhaps even a dark color for greater heat).

It is usually cut to the desired size and shape. Application is simple: the coating is applied to water. No additional fasteners are required. Tonight you can cover the pool with a film, then the water will not cool down. Use it after lunch: the water is heated to 3-4 degrees for several hours.

Requires Intex Pool Floating Blanket.

Plus: the method is very economical.

Disadvantage: uneven heating of water, the upper layers are warm and remain cold underneath.

It can be quickly mixed, the pump can be filtered or mixed between bathing areas.

And some "human" ways

kettle

It is used to heat water and a powerful boiler. It is very dangerous!

Electrical shock can be fatal!

In addition, there is a risk of damage to plastic or film tanks. Among the disadvantages are high energy costs.

If you still choose the option, follow these safety guidelines:

"Snail Trumpet"

It is known that water can be heated by increasing the surface. To do this, one end of a long tube (preferably black) is connected to the hole in the pool, and the other to the filter pump. It is advisable to secure the hose with clamps to avoid leakage. Then place it in the sun (it's best to place it in a circle, the shape is similar to an ear).

Water passing through the hose heats up faster.

Frame and inflatable paths

The water in the frame containers can be heated with an electric heater if the amount of water is small.

Very popular heating with solar panels. In specialized stores that sell swimming pool equipment, there is a large selection of selective panels - their use is most suitable.

You can install them next to the pool. For this purpose, special support is provided to ensure the necessary attachment.

The water for the small inflatable bowl can be heated with an electric heater.

Of course, no one has canceled the “folk” methods (heating water in a pipe or, in the worst case, using a reboiler).

in the photo: How to quickly warm water in an inflatable pool with your own hands (folk route)

Keep the water temperature with a special film, then you will need less energy to warm it!

Which choice to choose depends on the size of the pool, the amount of water and the number of degrees to be heated.

Based on your pool parameters, choose your wishes and options! Also read: Can you pour copper sulfate into your swimming pool? You can also use a comprehensive water purification system in your pool.

Here you can find instructions for using base tables. Read also. How to install a sandbox filter.