Cold and thermal shock test chamber refrigeration working principle
Both the high and low refrigeration cycles of the thermal shock test chamber use an inverse card cycle, which consists of two isothermal processes and two adiabatic processes. The process is as follows: the refrigerant is adiabatically compressed to a higher pressure by the compressor, and the work is exhausted to increase the temperature of the exhaust gas, and then the refrigerant is heat-exchanged with the surrounding medium through the condenser isothermally, and the heat is transferred to the surrounding medium. After the refrigerant is adiabatically expanded by the valve, the temperature of the refrigerant is lowered. Finally, the refrigerant absorbs heat from the higher temperature object isothermally through the evaporator, so that the temperature of the object to be cooled is lowered. This cycle is repeated to achieve the purpose of cooling.
Refrigeration system and compressor
In order to ensure the cooling rate and minimum temperature of the test chamber, the test chamber adopts a binary cascade water-cooled refrigeration system consisting of imported German semi-hermetic compressors. 10 tons of circulating cooling tower, provided by the user). The cascade refrigeration system comprises a high temperature heating cycle and a low temperature refrigeration cycle. The connecting container is an evaporating condenser. The evaporating condenser is also used for energy transfer. The heat in the working chamber is transmitted through the two-stage refrigeration system to achieve cooling. the goal of. The design of the refrigeration system uses energy-regulating technology, and an effective treatment method can ensure the effective adjustment of the energy consumption and cooling capacity of the refrigeration system under the normal operation of the refrigeration unit, so that the operating cost of the refrigeration system And the failure rate drops to a more economical state.
Hongzhan has a research institute specializing in the research and development of environmental test equipment. It has mature loop test development methods and laboratories, and gathers a group of outstanding talents and well-known experts in the industry. The strong R&D team leads the domestic loop test technology. Development direction. At present, the company has high and low temperature test chambers with independent intellectual property rights, high and low temperature wet heat test chambers, rapid temperature change test chambers, thermal shock test chambers, three comprehensive test chambers, high and low temperature low pressure test chambers, solar radiation test chambers. The climatic environment test equipment and customized products such as industrial ovens and walk-in high and low temperature damp heat test chambers and high wind speed rain test chambers are at the leading domestic level and international high standards.
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