Refrigeration mechanism and principle of high and low temperature test chamber

The refrigeration cycle of high and low temperature test chamber adopts reverse clamp if cycle, which consists of two isothermal processes and two adiabatic processes. The process is as follows: the refrigerant is compressed to a higher pressure through the compressor insulation, which consumes work to increase the exhaust temperature. After that, the refrigerant is transferred to the surrounding medium through heat exchange between the condenser and the surrounding medium. After the refrigerant through the shut-off valve thermal expansion to do work, then the refrigerant temperature is reduced. The uncoiled refrigerant absorbs heat from the object with higher temperature through evaporator isothermal, which reduces the temperature of the cooled object. This cycle starts again and again to achieve the purpose of cooling down;