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A study of low GWP refrigerants for transport refrigeration based on hermetic scroll compressors with an economizer.

Number: pap. 1503

Author(s) : SJOHOLM L., MA Y. C.

Summary

One hermetic scroll compressor with an economizer port that is designed for R404A has been tested with R404A in a compressor calorimeter. The testing has been completed on several running conditions to create a compressor operating map. Based on this map, a compressor efficiency model has been created. This model has been used to calculate capacities, input power, COPs and discharge temperatures for frozen and fresh conditions in the transport refrigeration application with R452A, R454A and R454C. The capacities, COPs and discharge temperatures for those frozen and fresh conditions are compared with R404A’s. Since some of the refrigerants have glide characteristics, calculations based on dew-point and mid-point are compared. Another hermetic scroll compressor with an economizer port that is designed for R134a has been tested with R134a in a compressor calorimeter. The testing has been completed on several running conditions to create a compressor operating map. Based on this map, a compressor efficiency model has been created. This model has been used to calculate capacities, input power, COPs and discharge temperatures for frozen and fresh conditions in the transport refrigeration application with R513A and R1234yf. The capacities, COPs and discharge temperatures for those frozen and fresh conditions are compared with R134a’s. Furthermore, a general comparison is made between the two different compressors and the two different refrigerants, where one is tested on R404A and the other is tested on R134a. In this case, COPs and discharge temperatures are compared.

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Pages: 9

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Details

  • Original title: A study of low GWP refrigerants for transport refrigeration based on hermetic scroll compressors with an economizer.
  • Record ID : 30024363
  • Languages: English
  • Source: 2018 Purdue Conferences. 24th International Compressor Engineering Conference at Purdue.
  • Publication date: 2018/07/09

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