Performance analysis of CO 2 transcritical refrigeration system units’improvement
LI Ya-qiang
GONG Yi
PENG Jin-chen
Abstract：By adding the internal heat exchanger and bypass valve,the transcritical CO2 refrigeration sys-tem with dual throttle valve was improved.Through the theoretical analysis and calculation of system per-formance parameters,it was concluded that:There was an optimum high-pressure Ph,opt ,the relationship between the optimum high-pressure (Ph,opt ),the gas cooler outlet temperature (T3 )and the evaporation temperature (Te)was:Ph,opt=0.264 3 T3 -0.008 9 Te -70.255 4;there was a larger increase in the region lower than the optimum high-pressure when the internal heat exchanger was used,there was little im-pact on system performance when the bypass valve was used from a theoretical calculation view.
Keywords：CO2 transcritical refrigeration systemhigh side pressurecoefficient of system performance
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 80-86 )