1 Refrigerated air dryer
heat exchange \ evaporator
Heat exchange in cold and dry in the main role of the evaporator is cooled by the use of compressed air carried by the cooling capacity (in terms of this part of the vast majority of users is a waste of cold cold) and use this part of the cooling capacity to carry large amounts of cooling The high temperature steam compressed air, thus reducing cold and dry cooling system heat load mechanisms to achieve energy savings. On the other hand, low air temperature in the heat exchanger to be picked up, so that the exhaust pipe wall temperature is too low and will not appear due to condensation.
Evaporator is cold and dry parts of the main heat exchanger, compressed air is forced in the evaporator cooling, most of which water vapor condenses into liquid water cooled and discharged outside the machine, so that the compressed air to be dry. Carried out in the evaporator low pressure refrigerant vapor is between air and convective heat and mass transfer through the low-pressure refrigerant after throttling device liquid phase occurs in the evaporator where the refrigerant into the low pressure steam, the process of absorption in the phase change around the heat so that the compressed air cooling.
In order to get higher as the heat transfer, heat transfer coefficient that is added to increase the heat exchanger heat transfer area, so cold and dry the evaporator and heat exchanger copper tube aluminum fin wall with a set of measures . At the same time on the sets of heat exchange device finned copper can reduce the air after the impact of copper and brass to prevent rupture.
2 Refrigerated air dryer
condenser, second condenser (back to pre-cooling heat)
In the cold and dry in the role of the condenser is the high pressure compressor discharge refrigerant, steam superheated refrigerant into liquid refrigerant cooling, so that a continuous cooling process can be carried out. As the condenser discharge refrigerant from the evaporator heat, including heat and draw power from the compression conversion over heat.
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secondary condenser (back to pre-cooling heat) in the heat exchange function of the machine and the same, the difference is between high and low temperature heat exchanger is mainly compressed air heat exchanger, while the second major use of low-temperature condensation compressed air and refrigeration systems for cooling high-pressure part, so that sufficient refrigerant to the cooling, thereby enhancing the machine's cooling efficiency, while avoiding the bad machine condenser cooling caused by high jumping machine or machine malfunction.