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文件名称: Experimental evaluation of a cascade refrigeration system
  • 所属分类 : 暖通空调
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  • 文件大小 ：742.14K
  • 上传时间 ：2018-07-04
  • 下载次数 ：0
  • 提 供 者 ：zhuz*****
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暖通空调，PDF格式，A prototype of a cascade refrigeration system using NH3 and CO2 as refrigerants has been
designed and built. The prototype is used to supply a 9 kW refrigeration capacity horizontal
plate freezer at an evaporating temperature of 50 C as design conditions. The prototype
includes a specific control system and a data acq*uisition system. The experimental
evaluation started with the real conditions within the design operating parameters.
Subsequently, several tests were performed fixing four CO2 evaporating temperatures (50,
45, 40 and 35 C). At each one of the evaporating temperatures evaluated, the CO2
condensing temperature was varied from 17.5 to 7.5 C and an experimental optimum
value of CO2 condensing temperature was determined. The discussions on the experimental
results include the influence of the operating parameters on the cascade system’s
performance. In addition, the experimental results are compared with two common double
stage refrigeration systems using NH3 as refrigerant.
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  • [Experimental evaluation of a cascade refrigeration system] - 暖通空调，PDF格式，A prototype of a cascade refrigeration system using NH3 and CO2 as refrigerants has been designed and built. The prototype is used to supply a 9 kW refrigeration capacity horizontal plate freezer at an evaporating temperature of 50 C as