supermarket refrigerated showcase self-cascade refrigeration cycle
supermarket refrigerated showcase self-cascade refrigeration cycle supermarket refrigerated showcase self-cascade refrigeration system uses mixed working fluids and realizes multi-stage cascade through a single compressor, which can get a 60 The low temperature below ℃ greatly simplifies the refrigeration system. Since the self-cascade refrigeration system has a relatively large working temperature zone; it can realize the refrigeration temperature zone from the liquid nitrogen temperature zone below 80K to the traditional rattan gas compression refrigeration cycle of 230K, whether in the general cold field or in the low-temperature electronics and low-temperature Medicine, freeze-drying, gas liquefaction and other low-temperature fields have relatively great practical value.
The high temperature and high pressure R23/R134a mixed working fluid vapor discharged from the compressor enters the condenser, where it exotherms and condenses. Due to the different boiling points of the binary components, most of the high-boiling R134a and a small amount of low-boiling R23 are first condensed into liquid in the condenser, while most of the R23 remains gaseous. The mixed working fluid enters the gas-liquid separator and is separated into two paths. One is the liquid mixed working fluid rich in R134a, which is throttled by the expansion valve and enters the condensation evaporator to absorb heat and evaporate; the other is the gaseous mixed working fluid rich in R23 , It is condensed into liquid in the condensing evaporator and then enters the evaporator through the expansion valve, where it absorbs the heat of the cooled object to realize refrigeration. Finally, the R23-rich vapor and the R134a-rich vapor are mixed and sucked and compressed by the compressor to complete the entire cycle. The above articles are from refrigerated showcase commercial refrigeration and supermarket refrigerated showcase. For details, please log in: www.ihdjx.com Free Order Hotline: +86 18019567573 Contact: Mr. Shao 26066250@qq.com
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