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The condenser is one of the important equipment in the refrigeration system. It transfers the heat of the refrigerant superheated vapor to the surrounding air or water through the heat release surface of the condenser. It is cooled to saturated vapor and further cooled to high pressure liquid., Circulate in the system. The working principle and structure of common condensers are introduced below. 1. Horizontal shell and tube condenser. The refrigerant vapor condenses on the outer surface of the tube, and the cooling water flows in the tube under the action of the pump. Refrigerant vapor enters the reservoir from the upper inlet pipe, condenses into liquid, and flows into the reservoir from the outlet pipe at the lower part of the cylinder. Both ends of the condenser cylinder are sealed with end caps, and the end caps are separated by water separation.
The expansion valve is one of the four major components of the refrigeration system. It is an important device to adjust and control the flow and pressure of the refrigerant into the evaporator, and it is also the "dividing line" of the high and low pressure sides ". Its regulation is not only related to the normal operation of the entire refrigeration system, but also an important indicator of the level of operator technology. The adjustment of the expansion valve must be carried out carefully and patiently. The adjustment pressure must pass through the evaporator and the warehouse temperature to generate heat exchange boiling (evaporation) and then enter the compressor suction cavity through the pipeline to reflect on the pressure gauge. It takes a time process. Each time the expansion valve is mobilized, it usually takes 15-30 minutes to move the expansion valve.
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