The structure of the high and low temperature impact test chamber refrigeration system
The refrigeration system of the high and low temperature impact test chamber consists of a refrigerant and four major components, namely a compressor, a condenser, a throttling element (expansion valve), and an evaporator.
Compressor: The compressor is the power of the refrigeration cycle. It is driven by the motor and rotates continuously. It not only removes the vapor in the evaporator in time, but also maintains the low temperature and low pressure. It also increases the pressure and temperature of the refrigerant vapor through compression. The condition for transferring the heat of the refrigerant vapor to the external environment medium. The low-temperature low-pressure refrigerant vapor is compressed to a high temperature and high pressure state, so that the refrigerant vapor can be condensed by using normal temperature air or water as a cooling medium.
Condenser: High and low temperature impact test chamber The condenser is a heat exchange device. It uses the ambient cooling air or water to remove the heat from the high temperature and high pressure refrigeration vapor from the cold compressor, so that the high temperature and high pressure refrigerant vapor is cooled and condensed. High pressure normal temperature refrigerant liquid.
Throttle element (expansion valve): The high-pressure normal temperature refrigerant liquid is directly sent to the low-temperature scale evaporator without the ear, and the pressure of the refrigerant liquid is lowered according to the principle of saturation pressure and saturation temperature, thereby lowering the temperature of the refrigerant liquid. The high-pressure normal temperature refrigerant liquid is passed through a pressure reducing device (throttle element) to obtain a low-temperature low-pressure refrigerant, which is then sent to the evaporator for heat absorption and evaporation.
Evaporator: The evaporator is also a heat exchange device. After the throttling, the low-temperature and low-pressure refrigerant liquid evaporates (boiling) into steam, absorbs the heat of the cooled substance, and lowers the temperature of the substance to achieve the purpose of refrigeration. In the air conditioner, the surrounding air is cooled to cool and dehumidify the air. The lower the evaporation temperature of the refrigerant in the evaporator, the lower the temperature of the object to be cooled.
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