Ventilation fan coil system is a part of the ventilation system which includes hot and cold water coils (hot and cold water winding pipes) and fan. as an indoor unit, air passes through the coils by the fan and then temperature distribution, distributes inside of the home, rooms, and office.
If the fan coil system is used with cold or hot water generators such as chillers and boilers (units outside the building), it will have a coil for hot and cold water, and if it is combined with heat pump systems such as VRF and GHP, it will have a special copper coil for refrigerant, which is, in fact, the evaporator of the compression refrigeration cycle of these devices. The refrigerant reduces or increases the air temperature by flowing inside the coil and exchanging heat with the air around the coil.
The fan used in the fan coil system can have different speeds. The best fan coils include fans that operate at different speeds to keep the temperature constant. In addition, remotely adjustable fans save energy.
In addition, an air purifier filter is installed in the fan coil to distribute the air in the environment after passing through the filter. The ventilation fan coil system can be installed as a unit (for one room) or as a duct to ventilate several rooms. In terms of placement at the installation site, fan coil units are divided into the ceiling, duct, cassette, wall, and floor types.
Important points about different types of fan coil units
- Ground fan coils with an aeration capacity of 200 to 1200 cubic feet per minute (CFM) are produced and supplied that emit air in the form of a riser.
- Ceiling fan coils, usually offered with cab and non-cab models, have an aeration capacity of 200 to 1200 cubic feet per minute (CFM) and are installed above the suspended ceiling (usually at the entrance of each room).
- Cassette fan coils are a type of ceiling fan coils whose coil part is installed on top of the suspended ceiling and their temperature and speed control can be done by remote control in addition to the room thermostat.
- Ducted fan coils are produced in capacities of 600 to 2000 cubic feet per minute (CFM) and two types: horizontal and standing. It is necessary to determine the required horizontal or standing fan coil before inquiring about the price or construction order.
It should be noted that chemicals such as Propylene or Ethylene Glycol are usually added to the water flowing in the pipes to prevent the water in the pipes from freezing. Because the addition of this material changes the rate of heat transfer, its effect on the selection and sizing of fan coils is calculated by air conditioning engineers. For more information about the types of fan coils, you can refer to the reference site and store of Damatajhiz.
Important parameters in choosing a fan coil unit
- Type of fan coil: Fan coil units have different types