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COMPARISON AND ANALYSIS ON MULTI-OBJECTIVES OF CASCADE REFRIGERATION SYSTEM USING CO_2 AS LOW TEMPERATURE CYCLE REFRIGERANT

机译:Co_2作为低温循环制冷剂级联制冷系统多目标的比较与分析

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In this paper, based on the thermodynamics, economy and environment cascade refrigeration systems ofR290, R32, R717 and R404A as high-temperature cycle refrigerant respectively, CO_2 as low-temperaturecycle refrigerant are compared and analyzed in multiple target. It is concluded that, under the sameconditions, the cascade refrigeration system using R717 as high-temperature circuit refrigerant has higherthermal efficiency, better economy and more friendly environment compared to the other three cascaderefrigeration systems. R290 / CO_2 and R32/CO_2 cascade refrigeration systems have similar thermalefficiency and friendly environment, but the R290 / CO_2 cascade refrigeration system has better economy.The coefficient of performance, economyand environment of the R404A / CO_2 cascade refrigeration systemcompared with that of the R717/CO_2 , R290 / CO_2 and R32 / CO_2 cascade refrigeration system respectivelydecreace by14.1%, 7.5%, 13.7%, 8.0%, 5.0%, 7.8% and 6.6%, 4.4%, 6.8%.
机译:本文基于热力学,经济和环境级联制冷系统R290,R32,R717和R404A分别为高温循环制冷剂,CO_2为低温比较循环制冷剂并在多个目标中分析。它的结论是,在相同的情况下条件,使用R717的级联制冷系统作为高温电路制冷剂具有更高与其他三个级联相比,热效率,更好的经济和更友好的环境制冷系统。 R290 / CO_2和R32 / CO_2级联制冷系统具有相似的热量效率和友好的环境,但R290 / CO_2级联制冷系统具有更好的经济性。R404A / CO_2级联制冷系统的性能系数,经济环境与R717 / CO_2,R290 / CO_2和R32 / CO_2级联制冷系统相比CONECECE达到14.1%,7.5%,13.7%,8.0%,5.0%,7.8%和6.6%,4.4%,6.8%。

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