Experiment box of alternating high and low temperature refrigeration system (-40-150 degrees within the scope of the single stage refrigeration compressor. If the temperature range -70-150 degree of the scope to the cascade type refrigerator compressor is usually composed of two parts, are referred to as part of the high temperature and low temperature. The high temperature part is the use of medium temperature refrigerant, the low temperature part is the use of low temperature refrigerant, and each part is a complete single or double stage compression refrigeration system. The evaporation of the refrigerant in the high temperature part system is used to condense the refrigerant in the low temperature part of the system, and only the refrigerant in the low temperature part system can be used to prepare the cold quantity. The high temperature part and the low temperature part are connected with a condensing evaporator, which is both an evaporator and a low temperature part of the condenser.
How to adjust the energy of the refrigeration unit of the high and low temperature test chamber at run time?
By the use of the conditions of change and the impact of changes in the conditions, the need to change the gas flow. Normally, the method of gas flow regulation is adopted to carry out the energy unloading. The main principle is that the suction and exhaust chamber is connected, the compressor exhaust directly return to the suction chamber, at this time, the suction pressure and exhaust pressure is almost the same, the compressor can only overcome the suction and exhaust valve spring preload, you can change into the exhaust gas.