1. What are the two forms of constant temperature and humidity air conditioning system?
Constant temperature and humidity air conditioner can strictly control indoor temperature, humidity fluctuation and regional deviation, and is used in many fields. There are two main forms of constant temperature and humidity air conditioning system:
1. Full air system with constant temperature and humidity air conditioning unit (with refrigerator)
The air-conditioned room shall be equipped with a constant temperature and humidity air conditioning unit, with the accuracy of Δ T =1℃ and Δ φ =10%. In summer, the humidity control capacity of the unit is low, so the adjustment of the refrigeration capacity of the unit is generally only two or three gears. Therefore, it is only suitable for air-conditioned rooms with little change in wet load. If the air-conditioned room does not require high humidity control, this kind of unit can be used in occasions with high temperature control requirements (such as 0.5℃). However, if the constant temperature and humidity air conditioning unit adopts frequency conversion to control the compressor speed, the humidity control accuracy can reach 2%.
2. All-air system with cold water as medium
Constant air volume all-air system with chilled water as cooling medium Constant temperature and humidity air conditioning system adopts reheat system. In summer, the temperature is controlled by adjusting the reheat heat and the humidity is controlled by adjusting the refrigeration capacity of air-cooled equipment. Air cooling equipment, such as surface cooler system, is suitable for occasions where humidity changes little. In places where the humidity changes greatly throughout the year or the humidity control accuracy is high, the water spraying room should be used as the heat and humidity treatment equipment. The spray rooms are all open. When the chilled water system is mainly used for spray room equipment, the chilled water system can be turned on. When the system has water spraying room, surface cooler, fan coil and other equipment at the same time, the chilled water system should give priority to close system.
2. Constant temperature and humidity air conditioning components
Constant temperature and humidity air conditioning unit is a common form of constant temperature and humidity air conditioning system. It has its own refrigerator, which consists of refrigeration system, electric heater, humidifier and automatic temperature and humidity control elements. Its specific structure includes:
Dry and wet bulb temperature controller, electric heater, ventilator, electrode humidifier, evaporator, compressor, condenser, liquid reservoir, pressure controller, filter and throttling mechanism; If it is a heat pump constant temperature and humidity air conditioning unit, a four-way steering valve will be added in the refrigeration system to switch the condenser and evaporator.
The above is Bian Xiao's sharing, and I hope it will help everyone.