How to determine the refrigerator or double stage compressor in the construction of cold storage?
Comprehensive considerations include cooling capacity and energy consumptionGenerally according to the temperature setting, the requirements of quick-frozen, generally with a good two-stage, at room temperature, fresh, with a single grade on it
Choose depending on the required library temperature.Refrigeration, preservation & single pole machineFrozen processing, special requirements of temperature to bipolar machine
Whether the piston compressor or screw compressor, two-stage compression is used in low temperature condition, the selection of double and single stage compressor mainly under cold temperature to the lowest temperature, evaporation double stage compressor piston can reach -70 degrees, usually used in low temperature condition, the low temperature cold storage preservation and do not need to use the double stage the compressor, because the price is very expensive
Single stage and double stage are for reciprocating compressor, according to refrigeration temperature, cold storage at room temperature to 30 degrees below, choose two stage, high efficiency, more than 30 degrees is a single stage, if the selection of screw compressor, can regardless of these, can directly reach 40 degrees, the centrifugal compressor is single the application of multilevel and multistage, lower temperature, were less common.
