What are the working principles of cold dryer
The refrigerated dryer is composed of three parts: heat exchange system, refrigeration system and electrical control system. Compressed air first enters the pre-cooler for gas-to-air or gas-to-water heat exchange, removing some of the heat energy, and then enters the heat exchanger for heat exchange with cold air cooled to the pressure dew point (2-11 ℃) through the evaporator The compressed air temperature is further reduced. After that, the compressed air enters the evaporator, and after the heat exchange with the refrigerant, the temperature drops to 2-11 ℃. The water in the air is precipitated at this temperature, separated by the air-water separator, and then discharged through the drain valve. The dry, low-temperature air enters the heat exchanger, undergoes heat exchange, and is heated and output.
Environmental pollution around the world is getting worse and temperatures are rising. The air quality under normal atmospheric pressure is already very poor, and then compressed by the air compressor, the moisture, oil and dust particles contained in the air will increase with the increase of air pressure. For modern industrial manufacturing, a large amount of compressed air is required, and the quality of compressed air directly affects product quality, work efficiency and machine life. "HDR" can help you solve this problem. The "HDR" dryer removes a large amount of water, oil and dust contained in compressed air, and connects it with the purpose of purifying air.
The thermal expansion sensor has automatic adjustment of the degree of unloading, rapid automatic adjustment of the degree of loading and unloading, and combined with a direct expansion refrigeration system, the pressure dew point is always maintained at the best state, and the pressure dew point is doubled and stable.
Low energy consumption and low pressure drop can minimize operating costs and save energy. The gas-to-gas sufficient heat exchanger (pre-cooling / reheater) removes half of the heat load in the input air, thereby minimizing the cooling system and power consumption, ensuring sufficient cooling and no condensation on the downstream pipeline. The gas and refrigerant are effectively evaporated, which can make the compressed air uniformly and uniformly cooled to the dew point temperature. The refrigerant multi-channel design scheme can maximize the use of refrigerating capacity and ensure that the evaporator is frost-free.
The vapor-water separator, which is vital to the dry dryer, adopts a uniquely designed two-stage vapor-liquid centrifugal separator, which can completely separate the condensed water and prevent the liquid from being carried out with the gas under various air flow conditions, maintaining high efficiency operation.
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