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Performance comparison of three refrigerants in a novel unitary air conditioning system.

Number: 1079

Author(s) : WAN H., CAO T., HWANG Y., CHANG S. D.

Summary

Flammable refrigerants offer refrigerant alternatives for energy-efficient and environmentally-friendly refrigerating system. However, the flammability hinders their expanded utilization due to charge limits. The objective of this study is to design a novel unitary air conditioning system allowing the safe use of flammable refrigerants and economizer ventilation operation, and evaluate the performance of such a novel system. We simulated the performance and refrigerant charge of the novel system for three refrigerants, R-410A, R-290 and R-32. Reaching the same capacity, R-290 requires a lower refrigerant charge level than that of R-410A, which is the primary refrigerant used in traditional unitary air conditioning systems. The Annual Performance Factor could be increased by up to 59% as compared to the existing design for the same refrigerant. The refrigerant charge level can be reduced by 35% for R-290. Future work is needed to further reduce the refrigerant charge level while keeping the efficiency.

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Performance Comparison of Three Refrigerants in A Novel Unitary Air Conditioning System

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Details

  • Original title: Performance comparison of three refrigerants in a novel unitary air conditioning system.
  • Record ID : 30027987
  • Languages: English
  • Subject: Technology
  • Source: 14th IIR-Gustav Lorentzen Conference on Natural Refrigerants (GL2020). Proceedings. Kyoto, Japon, December 7-9th 2020.
  • Publication date: 2020/12/07
  • DOI: http://dx.doi.org/10.18462/iir.gl.2020.1079

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