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Working principle of air conditioning and refrigeration parts

Date:Dec 15,2016
Air conditioning and refrigeration parts referred to as "cold", refers to the air conditioning and refrigeration parts and components, is the basic components of air conditioning and refrigeration equipment. Including air conditioning parts, compressor parts, refrigeration fittings, heating system accessories, such as: expansion valve, check valve, temperature sensor, pressure transmitter, filter etc. belong to the category of cooling.
Working principle
The working principle of refrigeration refers to the compressor to lower the pressure of steam into a higher pressure steam, so that the volume of the steam is reduced, the pressure increases. The compressor suction from the evaporator of low pressure refrigerant vapor, so that the pressure rise into the condenser, the condenser to be condensed into a high pressure liquid, through the throttle valve throttle valve, a low pressure liquid into the evaporator, and the evaporator endothermic evaporation into low pressure steam, then the entrance into the compressor, thereby completing the refrigeration cycle.
Evaporator is a very important part of refrigeration four pieces, the low temperature of the condensation of gas through the evaporator, and the outside air heat exchange, heat absorption, to achieve the effect of refrigeration.
The evaporator is composed of two parts, the heating chamber and the evaporation chamber. The heating chamber is provided with the heat required to evaporate the liquid, which causes the liquid to boil. The vapor generated in the heating chamber is provided with a large amount of liquid, and to the evaporation chamber of the larger space, the liquid is separated from the vapor by the action of the self condensation or the addition of the foam. Usually the foam remover is located at the top of the evaporation chamber.
The evaporator is divided into 3 kinds according to the operating pressure, pressure, pressure and pressure. According to the solution in the evaporator of the movement situation is divided into: 1. Boiling solution in the heating chamber several times through the heating surface, such as a central circular pipe, basket type, heat type, Levin and forced circulation type. Single pass type. Boiling solution in the heating chamber by a heating surface, no circulating flow is discharged, concentrated liquid, such as rising film type, falling film type, mixing type and centrifugal type thin film. Direct contact type. Heating medium and solution direct contact heat transfer, such as submerged combustion evaporator. Evaporation device in the operation process, to consume a large amount of heating steam, in order to save heating steam, can use multiple effect evaporation device and steam re compression evaporator. The five ring refrigeration shell and tube evaporator is widely used in chemical industry, light industry, petroleum and so on.

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