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Study on optimal middle temperature of cascade-condenser in CO2/NH3 cascade refrigeration systems with two temperature ranges.

Number: 2164

Author(s) : PAN X., SUN S., WANG H., WU H., XING Z.

Summary

This paper analyzes a CO2 /NH3 cascade refrigeration system of two temperature range applied in the cold storage. A mathematical model is prese nted to determine the optimal middle temperatures of the cascade condenser for obtaining the maximum coefficient of performance (COP) under different operation conditions. Three main parameters including the evaporation temperature in the cold storage, the evaporation temperature in the refrigerated storage and the condensation temperature in the high temperature stage are used to study the optimal middle temperature of CO2 in the cascade condenser. The results show that the optimal middle temperature incre ases with the increment of three main parameters. Moreover, under specific conditions, the optimal temperature is equal to the evaporation temperature of refrigerated storage. The results shown in this paper is helpful to the control strategy of CO2 /NH3 ca scade refrigeration systems for two temperature ranges.

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Pages: 6

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Details

  • Original title: Study on optimal middle temperature of cascade-condenser in CO2/NH3 cascade refrigeration systems with two temperature ranges.
  • Record ID : 30028422
  • Languages: English
  • Subject: Technology
  • Source: 2021 Purdue Conferences. 18th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Publication date: 2021/05
  • Document available for consultation in the library of the IIR headquarters only.

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