The refrigeration work of the high and low temperature test chamber is completed by the refrigeration system, so how does it accomplish the refrigeration, the following is elaborated by you in detail:
In order to ensure the requirements of the cooling rate and minimum temperature of the test box, the refrigeration system of this test box uses a cascade refrigeration system composed of imported compressors. The refrigeration system has the advantages of reasonable matching, high reliability, and convenient use and maintenance.
Refrigeration working principle: The refrigeration cycle adopts the reverse Karo cycle. The cycle is composed of two isothermal processes and two adiabatic processes. The process is as follows: the refrigerant is adiabatically compressed by the compressor to a higher pressure, which consumes power to exhaust After the temperature rises, the refrigerant exchanges heat isothermally with the surrounding medium through the condenser to transfer the heat to the surrounding medium. After the refrigerant passes through the shut-off valve for adiabatic expansion to do work, the refrigerant temperature decreases. Finally, the refrigerant absorbs heat isothermally from the object with a higher temperature through the evaporator, thereby lowering the temperature of the object to be cooled. This cycle is repeated to achieve the purpose of cooling.
The design of refrigeration system uses energy regulation technology, an effective processing method can not only ensure the normal operation of the refrigeration unit but also effectively adjust the energy consumption and cooling capacity of the refrigeration system, so that the operating cost of the refrigeration system Declined to a more economical state.
In addition to fully considering the safety protection and high efficiency of the refrigeration unit, multiple energy-saving measures have been taken: such as: refrigeration capacity adjustment of the refrigeration system, gas-liquid bypass adjustment, evaporation temperature adjustment, etc., at any low temperature temperature constant temperature Without the need for heating balance, the operating power can be reduced to half, which reduces the operating cost and failure rate of the refrigeration system to a more economical state.
The intelligent automatic conversion expansion system is used to automatically adjust the refrigerant flow according to the load + intelligent electric heating power data value (%) to match the temperature rise (load) and automatically simulate the output power data output value. This design can save more than 30% power compared with the traditional design. How is the high and low temperature test chamber cooled?
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