Usually, the industrial constant humidity air conditioning system includes three systems: constant temperature and humidity air conditioning compressed refrigerant circulatory system, constant temperature and humidity air conditioning air circulatory system, air conditioning electrical automatic control system; constant temperature and humidity air conditioning compressed refrigerant circulatory system.
Low-temperature and low-pressure refrigerant gas is sucked in by the compressor and compressed into high-temperature and high-pressure refrigerant gas (pressure and temperature increase), high-temperature and high-pressure refrigerant gas through the condenser (air-cooled or water-cooled) to release heat, condensing into liquid. Through the interceptor (expansion valve or capillary tube, etc.) after throttling into a low-temperature, low-pressure refrigerant liquid into the low-pressure evaporator, evaporator in the low-pressure evaporation of liquid refrigerant to absorb the heat of the air (so that the air is cooled and dehumidified), and ultimately the formation of a certain temperature difference between the refrigerant and the air, the liquid refrigerant is also completely evaporated into low-temperature, low-pressure gas to return to the compressor compressor, to complete the process of refrigerant cycle.
Constant temperature and humidity air conditioning air ring system:
The fan will be the air from the return air intake, through the evaporator (cooling, dehumidification), humidifier humidification, electric heater heating and warming through the air supply to the user required space, the air sent out of the air and the air in the space after mixing back to the return air supply, so as to form an air handling cycle.
Constant temperature and humidity air conditioning electrical automatic control system:
Automatic control sub-part is divided into temperature, humidity control and fault protection part:? Temperature, humidity control is through the temperature, humidity controller, the return air temperature and humidity and user-set temperature and humidity for comparison, automatic operation of the compressor (cooling, dehumidification), humidifier, electric heating and other components to achieve constant temperature and humidity of the automatic control. Failure protection control is achieved through pressure protection, time delay, relay, overload protection and other combinations of each other, the compressor, fan, humidifier and other components of the failure protection control.
Constant temperature and humidity air conditioning and household air conditioning difference:
Constant temperature and humidity air conditioning and ordinary household air conditioning difference is very big, can not be replaced:
1, constant temperature and humidity air conditioning air volume, low enthalpy difference in the way of air supply to maintain a smaller temperature, humidity uniformity. And ordinary household air conditioning air supply aspects strive to be comfortable. General constant temperature and humidity air conditioning air volume for ordinary household air conditioning air volume of 2 to 3 times.
2, due to rapid changes in humidity, the unit needs frequent dehumidification, and constant temperature and humidity air conditioning using refrigeration dehumidification, so the air conditioning refrigeration system can be frequently started, the refrigeration system requirements are very high; while the household air conditioning compressor can not be frequently started, set up with a compressor three-minute shutdown protection.
3, constant temperature and humidity air conditioning with a powerful independent control board, must have temperature, humidity detection, airflow detection function, with the room more and more high requirements, the control board has been attempted to join the incoming call since the start, fault warning, historical data preservation, data output, network monitoring and other functions. And home air conditioning comes with very little functionality.
Machine room precision air conditioning machine is widely used in computer rooms, program-controlled switch room, satellite mobile communication station, large medical equipment room, laboratory, test room, precision electronic instruments production workshop and other high-precision environment, such an environment on the air temperature, humidity, cleanliness, air distribution and other indicators have high requirements, must be by the 365 days a year, 24 hours a day safe and reliable operation of the special machine room precision air conditioning equipment. The special machine room precision air-conditioning equipment to protect the operation.