The day before yesterday we talked about the difference between fan coil unit and explosion-proof multi-line, yesterday we said what is explosion-proof multi-line, a long time ago, we talked about what cassette fan coil unit, so let's learn about the explosion-proof fan coil unit including the cassette fan coil unit today, what is this? Let's take a look!
OneWhat is an explosion-proof fan coil unit? What is it used for?
Fan coil unit is a kind of air-conditioning and refrigeration system, which is mainly composed of small fans, motors and air heat exchangers and other components, which are widely used in air-conditioning systems in electric power, chemical industry, construction and other industries; The main function is to realize the regulation of indoor temperature and air circulation through the circulation of indoor air, and at the same time have a certain fresh air function, which can keep the indoor air fresh and constant.
IIWhat is the connection and difference between fan coil unit and air conditioner?
OneRelationship:
Fan coil unit is a kind of terminal device in the air conditioning system, and can also be regarded as an important part of the air conditioning system; In the ** air conditioning system, the fan coil unit is responsible for sending the treated air into the room to achieve indoor temperature regulation and air circulation.
IIDifferences:
1. Different properties: Fan coil unit is a kind of air conditioning terminal device, while ** air conditioning is a complete air conditioning system, including the main engine, refrigerant pipe, air handling equipment and other parts.
2. Different application ranges: Fan coil units are generally used in small air-conditioning systems, such as homes, offices and other places; Air conditioners are widely used in large-scale commercial, industrial, public buildings and other fields.
3. Different energy consumption and efficiency: Fan coil units generally use fixed-frequency technology, and the energy consumption is relatively high; The first air conditioner mostly uses frequency conversion technology, which can automatically adjust the refrigerant flow according to the actual demand.
IIIWhat is the reason for the low speed of the fan coil unit?
1.Motor failure: Aging motors or short circuits in windings can cause fan coil unit speeds to decrease. At this point, the motor needs to be replaced or the winding short circuit problem needs to be repaired.
2.Insufficient power supply capacity: If the power supply capacity of the fan coil unit motor is too small, when the load reaches or exceeds the rated capacity of the power supply, the motor voltage will drop and the current will rise, resulting in the motor speed slowing down. At this point, the power supply needs to be replaced or the power supply capacity needs to be increased.
3.Poor cleaning: After a long period of operation, the fan coil unit can accumulate a lot of dust and dirt, resulting in a decrease in rotational speed. Therefore, regular cleaning of the fan coil unit is key to keeping it functioning properly.
4.Blocked air vents: Long-term inhalation of dust and harmful gases may cause clogged vents and affect the speed of the fan coil unit. At this time, it is necessary to clean the ventilation vents and keep them clear.
5.Controller failure: A controller failure can also result in a reduction in fan coil unit speed. At this point, you need to check whether the controller is damaged and replace the controller if necessary.
FourthHow does a fan coil unit work?
The main working principle of the fan coil unit is to rely on the forced action of the fan to make the air be heated when passing through the surface of the heater, so as to strengthen the convection heat exchange between the radiator and the air.
When the air conditioning system needs to be cooled, the chilled water in the fan coil unit flows in the coil unit to absorb the heat of the indoor air, so that the air temperature drops and the cooling effect is realized. On the contrary, when heating is required, hot water flows in the coil and releases heat to the indoor air clock, which causes the air temperature to rise and achieve a heating effect. By adjusting the temperature and flow rate of the refrigerant (water), it is possible to meet the needs of different places and seasons and achieve a constant indoor temperature.