Take you to understand the "cold" knowledge of the constant temperature and humidity test chamber

What is the "cold" main knowledge of the constant temperature and humidity test chamber, in fact, constant temperature and humidity is the refrigeration system studied, we know its characteristics, structure and content, we can better use it. Below I will take you to understand it.

Refrigeration system of constant temperature and humidity test chamber:

1. Cooling is an important part of the constant temperature and humidity test chamber, and an important parameter for judging the performance of a constant temperature and humidity test machine. It includes four major components: compressor, condenser, throttling device and evaporator. The compressor is the heart of the refrigeration system. It sucks in low-temperature and low-pressure gas, turns into high-temperature and high-pressure gas, releases heat by condensing into a liquid, and takes away the heat by a fan. So the hot air under the equipment is caused by the hot air, and then it is throttled to a low-pressure liquid, and then passed The evaporator becomes a low-temperature and low-pressure gas and finally returns to the compressor. The refrigerant absorbs heat in the evaporator to complete the gasification process and absorbs heat to achieve the purpose of refrigeration and complete the cooling process.

2. In order to ensure the requirements of the test chamber for the cooling rate and minimum temperature, the refrigeration system of the programmable constant temperature and humidity test machine adopts a cascade refrigeration system composed of imported compressors. The refrigeration system has reasonable matching, high reliability and use. Convenient maintenance and other advantages.

3. The working principle of refrigeration: the refrigeration cycle adopts the reverse Karyo cycle, which consists of two isothermal processes and two adiabatic processes. The process is as follows: the refrigerant is adiabaticly compressed by the compressor to a higher pressure, which consumes heat . The temperature of the exhaust gas rises, and then the refrigerant exchanges heat with the surrounding medium through the condenser and other components to transfer heat to the surrounding medium. After the refrigerant passes through the shutoff valve adiabatic expansion to perform work, at this time the temperature of the refrigerant decreases. Finally, the refrigerant absorbs heat from the higher temperature object through the evaporator and other components, so that the temperature of the cooled object is reduced. This cycle repeats itself to achieve the purpose of cooling down.

4. The design of the refrigeration system applies energy adjustment technology, which is an effective treatment method that can not only ensure that the energy consumption and cooling capacity of the refrigeration system can be effectively adjusted under the normal operation of the refrigeration unit, so that the refrigeration system The operating costs have dropped to a more economical state.