The advantages of this cascade refrigeration system industrial chiller is used for high temperature refrigerant and pressing system suitable for low temperature high-pressure refrigerant system. The specific volume at low temperature and high pressure refrigerant gas is in pressure refrigerant much smaller, therefore, when the low temperature of the same type as the compressor cascade refrigeration when two-stage compression refrigeration volume fraction, the cascade refrigeration system chiller can save a lot of investment and construction area. And the high pressure refrigerant suction in low temperature working pressure greater than or close to a big pressure, does not appear like the two-stage cryogenic system as often to the infiltration of air system.
In the past there are engineers with R13 low temperature, as compared to R22 as high temperature two element cascade refrigeration system, the cooling capacity of the same equipment investment, cascade refrigeration system chiller than two-stage compression refrigeration system chiller mistress times. Install motor power, cascade refrigeration system than the two-stage compression refrigeration system two times. Because the number of compressor double stage refrigeration system, the friction power increases, so the double stage compressor energy consumption is more than 1.5 times the cascade refrigeration system.
Remove user requirements change of temperature, the environment temperature is higher than can be used in cascade refrigeration system of industrial chiller is above -55 C. The cascade refrigeration system for low temperature cold source of experimental equipment is also more and more.