Fan coil heating system for a private house. Sharing a fan coil unit with a heat pump

An air-to-water heat pump is not only, but also an excellent option for comfortably cooling a house on a hot summer day. A real opportunity to avoid the cost of installing additional equipment for cooling the room is to use a ready-made circuit for hot water heating using fan coil units instead.

At first glance, fan coil units look like ordinary batteries, but their capabilities are much wider than radiators. They do a very good job of achieving the desired room temperature, even when installed in a low-temperature heating system. In heating mode, the efficiency and therefore the economy of the heat pump are ensured. The improvement in heating performance compared to radiators is achieved through active air circulation. Because a fan coil is a heat exchanger in which a heat or coolant is supplied and with the help of a built-in fan, air is blown, which, depending on the water temperature, either heats up or cools. The main function of the fan coil unit is to regulate the air temperature. A system with heat pumps and fan coil units allows you to simultaneously solve the problems of ventilation, heating, cooling and recuperation.

In winter, heated water is supplied to the fan coil units for space heating. In summer, the heat pump cools the water supplied to the fan coil units for air conditioning.

The use of a heat pump with a fan coil system is a comfortable climate based on one equipment all year round.

Fan coil types:

Fan coil units universal (floor)

Universal fan coil units MYCOND have a wide range of applications. Most often, blocks of this type are installed on the floor in a vertical position or mounted under the ceiling in a horizontal position, where the free space under the ceiling is minimal.

Refrigerating capacity:

1.44-10.61 kW

Thermal power:

2.44-17.3 kW

Benefits:

Wide range of applications
Comfortable room cooling with large area and low height
Can be installed horizontally or vertically
Low noise level
Wide range of control accessories

Technical features:

Static pressure up to 60 Pa
Execution with or without legs
Remote or built-in control panel

We also offer BRIZA fan coil units. It is a super slim and powerful fan coil unit for heating and cooling.

Fancoil Briza is a unique climate unit that includes two functions! A hybrid that provides comfortable warmth, and in the summer gives a refreshing coolness.

It will provide your home with an optimal climate throughout the year.

The power of the Breeze fan coil is provided by the original Low-H2O technology, combined with a virtually silent dynamic system... Briza is the thinnest fan coil unit on the market with similar performance.

Fan coil unit Briza is ideal for connection to low temperature heat sources such as heat pumps, systems solar energy and condensing boilers.

Thanks to the latest EC motors, Briza fan coil units consume 50% less electricity than traditional motors. Briza has remote control using the latest automation.

All this is complemented by a sleek slim design with a flat front bezel, stylish grille and impressive variety. colors... All color solutions fan coil units can be provided in the form of original samples, and the painting itself will be performed exclusively for you at the production of the Belgian company JAGA.

Fan coil units cassette (ceiling)

Cassette fan coil units MYCOND are designed for air conditioning for various purposes... The fan coil unit is installed in the sub-ceiling space with the installation of a special decorative panel. Such blocks are widely used in office premises and trading floors.

The optimized design results in higher volumetric airflow and increased productivity. The low height of the door closers allows them to be installed in rooms with low height sub-ceiling space. Due to the compact design and low weight of the MCF-K series fan coil, the equipment can be installed without special mechanisms. The louvers of the indoor unit are profiled in such a way as to avoid additional noise.

The use of a fan impeller of a carefully designed shape allowed:

reduce air resistance;
get a more uniform air flow at the outlet;
achieve uniform distribution of air velocities over the surface of the heat exchanger.

Refrigerating capacity:

3.03-9.0 kW

Thermal power:

4.5-11.3 kW

Benefits:

Uniform distribution of cooled air, which provides comfortable cooling of large rooms
Quiet operation
Easy to install due to compactness of the unit and low weight
Uniform four-way distribution of cooled air, which provides comfortable cooling of large rooms
Low noise level
Condensate drainage system is easy to build thanks to built-in drainage pumps
Ease of installation
Wide range of control systems and accessories
Possibility of optional equipment with EC motor fans
Available in 2- and 4-pipe versions

Technical features

3-, 4-row heat exchangers
2-pipe version, 4-pipe version
Possibility of optional installation of an electric heater
Low height of the fan coil unit
Multifunctional controller and IR remote
Wide range of optional control panels
Integrated condensate pump
Stylish design that blends harmoniously with any interior

Fan coil units wall

Wall fan coil units outwardly practically do not differ from the internal blocks of conventional split systems. They are installed on the wall at a certain distance from the ceiling. As a rule, wall-mounted fan coil units come with remote controllers and a built-in three-way valve. Most often, this type of equipment is installed in small office premises.
Refrigerating capacity:

1.87-3.81 kW

Thermal power:

2.57-5.2 kW

Benefits:

Low cost of equipment and installation
Easy connection to the refrigeration system thanks to the integrated valve
Wide installation possibilities, since no special conditions are required
Low noise level

Technical features:

Possibility of optional equipment with EC motor fans
2-pipe version
Possibility of using infrared remote control
Wide range of optional equipment and control systems

Fan coil units are in-floor.

CLIMA CANAL - complete climate control!

Despite its modest dimensions, the Clima Canal is powerful deviceallowing to provide heat in the most critical conditions. Quiet and discreet, Clima Canal creates maximum climatic comfort. This high-tech, fan-cooled LOW-H2O * heat exchanger radiator has been specially designed to deliver record performance in an ultra-compact unit. At the same time, the noise level is imperceptible to hearing and amounts to 29 dB! In boost mode, the radiator develops even more power for ultra-fast heating and cooling.

Initially, the fan coil unit is part of a system that also includes a hydronic module and a chiller. Fan coil unit is a complete unit consisting of components:

heat exchanger - used to circulate water;
fan - its task is to blow off the heat exchanger;
air filter;
pallet - a tank in which condensate accumulates;
temperature sensor;
sensor for receiving a signal from the controller;
three-way valve (optional).

Chiller-fan coil system

At the very beginning, the fan coil unit was inextricably linked with the chiller. This installation also included a hydronic module, which provided the movement of water in the circuit and was equipped with several or only one pump. Water has always been used as a coolant. The system only provided cooling for a large number of rooms in the summer heat.

As the process of heat exchange was studied, fan coil units were improved, and it became possible to use them for heating. To realize this idea, the chillers were improved by adding additional elements to the design.

During cooling, the refrigerant circulates in the chiller unit in the following order:

Compressor block.
Capacitor.
Throttling installation.
Heat exchanger block.
Compressor block again.

If there is a need to heat the air, the refrigerant moves in the opposite direction. In the heat exchanger, heat is exchanged between the refrigerant and water. The advantage of such a scheme of work is that the appearance of the heating function did not lead to a change in the design of the fan coil.

What are fan coil units?

Cooling units are classified according to many parameters:

Depending on from the installation site: wall-mounted and floor-sub-ceiling, duct (low-pressure, medium-pressure and high-pressure), cassette (single- and four-flow (standard and compact sizes)).
By design features : two-pipe (or single-circuit) and four-pipe (or double-circuit); 2-row, 3-row and 4-row; in the case and without it.
By location relative to the plane: horizontal and vertical

Using fan coil units as a heat pump

A fan coil unit that provides air heating also has an alternative name - a heat pump. If earlier electricity and heat from gas or coal were used as a source of heating, now it has become possible to fully heat buildings using a chiller-fan coil system. Moreover, this method is 2-4 times more effective.

The peculiarity of the fan coil unit as a heat pump is as follows:

The compressor unit, compressing the refrigerant, increases its temperature to 60 ℃ -100 ℃
The heated refrigerant transfers its heat to the water, which gets into the fan coil unit and helps to heat the air in the room.
To ensure that the system can work for heating in winter, it is necessary to protect the unit from water freezing.
To do this, even before the installation of the blocks, the water is replaced with a liquid that is not subject to crystallization, since it is impossible to make any changes during operation.

An important point is that initially all parameters are calculated taking into account the use of antifreeze liquid. Since its viscosity is much higher than that of water, the performance of the system may decrease.

Fields of application of fan coil units for heating

Most chiller models are capable of heating / cooling. The temperature of the water that enters the fan coil unit to heat the air reaches about 40 ℃ -55 ℃.

There are also installations that work only for heating or only for cooling. The first type is called heat pumps. They are often used in private households. In this case, devices are used not only as an air heater for the room. They also heat water for showers, dishes and other needs. Such fan coil units are distinguished by their ability to quickly heat up the air, to ensure its intensive movement. In addition, they are virtually silent during operation.

If there is an alternative filing method warm water for a fan coil, it is absolutely not necessary to purchase a chiller as well. You just need to comply with the requirements for the liquid temperature - no more than 70 ℃.

We love it when the temperature is comfortable at home, even if it's hot or cold outside. Air conditioners save us in summer. But can one air conditioner cope with a large private home? But what if you need to cool an office or an entire shopping center?

Many believe that air conditioners are limited. Of course, this type is the most common, but there are other types that are no less effective. One of them is the chiller-fan coil air conditioning system. The word is complex, but it is not difficult to guess from it what this system consists of. Let's try to disassemble each of the parts of the system - fan coil and chiller - and understand what are its advantages.

What is a fan coil unit?

A fan coil unit is a device that cools or heats indoor air. Fan coil unit is an element of the whole air conditioning system. It is also called a fan coil. A fan coil unit consists of two parts: a fan (fan) and a heat exchanger (coil). Often there is a coarse filter in the closer so that coarse, fluff and other contaminants do not enter the device. IN modern models a remote control is provided.

In the well-known split systems indoor unit - this is the same fan coil. Only split systems cool or heat the air thanks to the refrigerant - a special gaseous substance, most often freon. In a fan coil, a liquid works - water or an antifreeze aqueous solution of ethylene glycol.

Principle of operation fan coil unit is simple:

The fan "takes" air from the room and directs it to the heat exchanger.
Meanwhile, cold or cold water enters the heat exchanger. hot water - depending on what air temperature you want to achieve.
The water in the heat exchanger takes in or gives off heat to the air.
Then the air, cooled or heated, returns to the room - at the required temperature.
When the system is configured to cool the air, condensate forms on the heat exchanger, which is drained by a pump into the sewer or discharged outside.

But where does the water get into the heat exchanger? To get it, the fan coil unit needs an additional unit. A boiler plant or a heat pump is used to heat the air, and a chiller is used for cooling. We will talk about the chiller a little later.

There can be several fan coil units in one room - just like heating radiators. The number of units depends on the area of \u200b\u200bthe room and on the requirements for the air temperature.

The fan coil unit can work not only in the air recirculation mode, but also in the mixed mode, that is, to combine the air from the room with the fresh air. But not all closers have this option, but only those connected to the supply ventilation.

By installation method fan coil units are divided into:

outdoor;
wall-mounted;
ceiling.

There are universal devices that are mounted both on the wall and on the ceiling.

There are also corps and frameless fan coil units. Models without a case are cheaper; they are usually masked behind decorative panels or false ceilings.

By the number of heat exchangers fan coils there are:

Two-pipe, when two pipes leave one heat exchanger. Through one pipe, water enters the fan coil, and through the other, it goes back. Basically, two-pipe models are used only for cooling. Air heating is also possible, but you will have to heat the water in an additional heat exchanger and use a special pump.
Four-pipe. In such fan coil units, there are two heat exchangers, two pipes depart from each. One heat exchanger circulates cold waterand hot in the other. Thanks to this, the device cools and heats the air without any problems.

There is another classification of fan coil units:

Cassette fan coil units installed where there are suspended ceilings. They are two- and four-pipe. Usually cassette models are produced without a case, since it most of is hidden anyway. Only visible remains decorative panel - there are blinds on it that distribute the air flow. The cassette fan coil unit makes almost no noise, is relatively easy to install, and also distributes air evenly throughout the room.
Duct fan coil units often used for large facilities such as offices and shopping centers. They are installed inside ventilation system per false ceiling and behind the false walls. Channel type fan coil units can either supply fresh air, or clear the existing one.

A chiller is a liquid cooling machine. Often it works in tandem with a fan coil, but it also has other uses: for example, using a chiller, a skating rink is poured, medicines are cooled. Typically, the chiller in a chiller-fan coil system is located on the roof or in technical room.

By type of cooling chillers are divided into two types:

Air cooledwhen the condenser in the chiller - the device in which the refrigerant turns from gas to liquid - is blown by the air stream.
Water cooledwhen the condenser in the chiller is cooled by running water

There are also absorption and vapor compression chillers:

Absorption. In such chillers, instead of freon, a mixture of water and lithium bromide is used. They are not yet very common in Russia.
Steam compression. Now this type is the most common. In fact, this is the same freon air conditioner, only it is not air that passes through it, but water. Vapor compression chillers consist of a compressor, condenser, expansion valve and evaporator.

Principle of operation the chiller is as follows:

The compressor increases the pressure of freon, a gaseous refrigerant.
Then the freon enters the condenser, where it cools and becomes liquid.
In the thermostatic expansion valve (TRV), the freon boils and begins to evaporate.
In the evaporator, freon takes heat from the water.
Freon becomes gaseous again and the cycle repeats.
The water cooled in the evaporator enters the fan coil unit, which distributes the air throughout the room.

Chiller Installation: From Design to Testing

The most difficult thing in installing a chiller-fan coil system is installing a chiller. It takes place in several stages:

Preparatory work. At this stage, the features of the room or building are clarified, the necessary equipment is selected.
Choosing a place. The location is selected taking into account the weight and dimensions of the chiller. It is also important to provide free approaches to the unit so that it is easy to maintain.
Installation of the base.It will not work just like that to put the chiller on the floor or roof - you need a base or a mounting frame, on which the device will be installed later.
Vibration isolation. So that vibrations from the operation of the chiller do not feel like a small earthquake, anti-vibration mounts are installed.
Installation of the chiller itself. If the unit is too large, it is installed using special equipment.
Installation of the hydraulic circuit, that is, connection to a pipe cooler and installation of fan coil units.
Customization electrical systems and testing chiller operation.

HVAC equipment must be selected, installed and maintained by qualified specialists.

Chiller-fan coil system: pros and cons

Now that we know what a fan coil unit and a chiller are, we can understand what a chiller-fan coil system is. The chiller, the external unit of the system, is piped to a fan coil - an internal heat exchanger that is blown by a fan.

But why is such a system even needed if there are conventional air conditioners? The fact is that it has several advantages over split systems:

Scalability. Due to the gas refrigerant, the distance between the internal and external units in split systems is limited. In a chiller-fan coil system, you can connect as many fan coil units as you like at a distance of up to several hundred meters - the specific characteristics depend on the power of the chiller and pump station... As a result, only one chiller can be used even in a large building.
Aesthetic component.Due to the limited distance between indoor and outdoor units outdoor unit a conventional air conditioner is placed on the facade of the building. In a chiller-fan coil system, the chiller is located on the roof or in the technical room, therefore appearance the facade is preserved.
Versatility. If there are many split systems, this air conditioning option works around the clock at any temperature. Moreover, thanks to a large number fan coil units, you can easily adjust the air temperature in each separate room.
Security.The refrigerant is liquid, not gas, as in split systems, so the likelihood of an accident is much lower.

One of the most modern systems heating and air conditioning for private houses is a chiller-fan coil system. This system will allow you to create a favorable microclimate in your home, maintain fresh air, and preserve the health of your household. This system especially stands out against the background of traditional split systems, therefore, we will talk about its features in this article. First, we will consider the structure of the system as a whole, then we will directly touch on fan coil units.

The main purpose of the chiller-fan coil system is air conditioning. It consists of two main parts: a chiller and a fan coil unit. A chiller is a device that is directly responsible for heating or cooling, and a fan coil is essentially an air conditioner that serves to cool or heat the air in the room in which the fan coil itself is located.

Unlike a conventional air conditioner, the refrigerant does not circulate through the fan coil unit, often water or non-freezing liquid circulates through it. As for the chiller, it can work, for example, on solid fuel or work on a heat pump system.

In addition to the main parts, the system contains: a hydronic module, automation, connecting elements, storage and expansion tanks, heat carrier and refrigerant. A hydronic module is, in fact, a pumping station, the task of which is to ensure the movement of the coolant in the system. Automation provides control and regulation of the system during its operation.

Connecting elements are pipes that connect parts of the system, units, to each other. Ethylene glycol (for regions with cold or temperate climates) or water (for regions with hot climates) is used as a heat carrier. The refrigerant is gas, often freon.

Distinctive advantages of the chiller-fan coil system are in a number of its features.

Firstly, the system is very easy to maintain - filters can be easily removed, cleaned or changed.

Secondly, it is possible to install several fan coil units (in separate rooms), while the chiller operates one for the entire system, and the number of fan coil units is determined only by the chiller capacity.

Thirdly, the chiller is installed at once in one specific place, it does not require several places, that is, it does not eat up a lot of area.

Fourth, well-organized pipe insulation will allow the transfer of the coolant to long distancethat is, heated or air-conditioned rooms may be located far from the chiller.

During installation, ordinary pipes, standard shut-off valves, typical automation are used. The system is environmentally safe, if the ethylene glycol solution in water and has some toxicity, then if it leaks, a person will instantly start coughing, and leave the room - he will be safe. As for the refrigerant, it circulates only in the chiller, that is, in the unit in the attic or on the roof - outside the living quarters. Such a system allows you to combine both heating and supply and exhaust ventilation at a relatively low cost of installation.

The coolant entering the chiller is heated or cooled, similar to the way it happens in an air conditioner. Water or an antifreeze liquid serving as a heating medium is supplied to the fan coil units by means of a pumping module, where the room air is mixed with the air of the unit, using a fan installed inside.

A heated or cooled coolant gives or takes away heat from the air in the room, so the correct microclimate is achieved. This is the principle of operation of chiller-fan coil systems, which perfectly show themselves as systems air heating private houses.

The heat exchanger of the chiller itself is connected to the pump and storage tank (accumulator), then an expansion tank is installed, and then the coolant is supplied through the pipes to the fan coil units, while the control valves installed in the pipeline adjust the system to the correct mode.

For a particular house, the project of the system is developed by specialists individually, and if somewhere the chiller can be installed only on the roof, then the attic is best suited for placing the chiller. When designing, they take into account all the features of the premises, the backyard infrastructure and the requirements of households for the microclimate. The chiller type is selected individually, as well as the number of fan coil units, depending on the load intensity and on the individual customer's requirements for the peculiarities of the system operation modes.

The devices included in the system can work together or separately, again depending on the type of system. Chillers are reversible, steam compressor or absorption. The reversible chiller is capable of both heating and cooling. The steam compressor will remove heat from the coolant circulating inside the unit into a special chamber.

And the absorption can, changing the state of aggregation of the liquid, take away heat from it, or vice versa - heat it; the absorbent transfers heat to the consumer. Cooling can be air or water, and the cooling circuit is remote. Directly fan coil units are cassette or channel, wall, floor or ceiling.

When choosing a system, it is important to evaluate the following parameters: chiller capacity, fan coil capacity, pumping station capacity, pipeline length, pipe insulation. So the chiller-fan coil system can be designed for any building, not only for a private house, but also, for example, for a supermarket or hotel.

Ecology of consumption. Manor: One of the most modern heating and air conditioning systems for private houses is the chiller-fan coil system. This system will allow you to create a favorable microclimate in your home, maintain fresh air, and preserve the health of your household.

One of the most modern heating and air conditioning systems for private houses is the chiller-fan coil system. This system will allow you to create a favorable microclimate in your home, maintain fresh air, and preserve the health of your household. This system especially stands out against the background of traditional split systems, so we will talk about its features in this article. First, we will consider the structure of the system as a whole, then we will directly touch on fan coil units.

Unlike a conventional air conditioner, refrigerant does not circulate through the fan coil unit, often water or non-freezing liquid circulates through it. As for the chiller, it can work, for example, on solid fuel or work on a heat pump system.

Distinctive advantages of the chiller-fan coil system are in a number of its features.

Firstly, the system is very easy to maintain - filters can be easily removed, cleaned or changed.

Thirdly, the chiller is installed at once in one specific place, it does not require several places, that is, it does not eat up a lot of area.

Fourthly, well-organized thermal insulation of pipes will allow the transfer of the coolant over a long distance, that is, heated or air-conditioned rooms can be located far from the chiller.

During installation, ordinary pipes, standard shut-off valves, typical automation are used. The system is ecologically safe, if the solution of ethylene glycol in water and has some toxicity, then if it leaks, a person will instantly start coughing and leave the room - he will be safe. As for the refrigerant, it circulates only in the chiller, that is, in the unit in the attic or on the roof - outside the living quarters. This system allows you to combine both heating and supply and exhaust ventilation at a relatively low cost of installation.

The heat exchanger of the chiller itself is connected to the pump and the storage tank (accumulator), then the expansion tank is installed, and then the coolant is fed through the pipes to the fan coil units, while the control valves installed in the pipeline adjust the system to the correct mode.

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