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Development of a standardized refrigerant evaluation tool for air conditioning and refrigeration equipment using a general-purpose energy-analysis simulator.

Number: 2574

Author(s) : GIANNETTI N., SAITO K., YAMASHITA K., TAIRA S.

Summary

Various new low-GWP refrigerants are being introduced for refrigeration and air-conditioning equipment, such as residential air conditioners, commercial air-conditioners, refrigerated display cabinets, chillers, and condensing units. The performance of these new working fluids should be effectively evaluated to select their most suitable implementation case and reduce the environmental footprint of this technological field. The actual operation performance of refrigeration and air-conditioning equipment is substantially affected not only by the system design and the properties of the refrigerant, but also by the climate and load conditions of the specific installation. Therefore, a refrigerant evaluation tool may take advantage from the cost effectiveness and flexibility of a reliable simulation platform but requires standardized calculation conditions for achieving unbiased results. To this aim, the joint effort of a consortium representing different views from academia and industry is required to validate the analysis and define common calculation conditions. Consequently, the development of a standardized evaluation tool will minimize inconsistencies between different research efforts and contribute to driving the effective selection of refrigerants and the development of energy-efficient equipment. A general-purpose energy-analysis simulator, "Energy Flow+M", was developed and validated at Waseda University for steady-state, dynamic and control analyses. The cooperation with the Japan Refrigeration and Air Conditioning Industry Association (JRAIA) led to the proposal of standardized analysis conditions and the development of standard refrigerant evaluation models for different air-conditioning and refrigeration systems. Finally, this evaluation tool was used to assess the performance of different systems using next-generation low-GWP refrigerants, including conventional HFC refrigerants, refrigerant mixtures, HFO and natural refrigerants. Comparative results obtained for R32, R410A, R290, R1234yf, and different zeotropic mixtures were presented and discussed.

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  • Original title: Development of a standardized refrigerant evaluation tool for air conditioning and refrigeration equipment using a general-purpose energy-analysis simulator.
  • Record ID : 30030777
  • Languages: English
  • Subject: Technology
  • Source: 2022 Purdue Conferences. 19th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Publication date: 2022

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