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An analytical comparison between R134a and alternative refrigerants in the water-cooled chiller.

Number: 1066

Summary

Owing to escalating effect of global warming on climate change, the replacement of HFCs using lower GWP refrigerants has become a crucial work to reduce the predicted increase of mean surface temperature of the Earth. In the current scenario, this paper presents a water-cooled chiller cycle analysis to identify the relative performance of R134a, potential substitutions R513A, R1234yf, R1234ze(E), and low-pressure refrigerants R1233zd(E) and R1224yd(Z) for a 200RT chiller application. Comparisons between R134a and alternative refrigerants are carried out in terms of coefficient of performance, exergy efficiency, and irreversibility under the three types of working conditions: constant refrigerant volumetric flowrate, constant cooling capacity and fixed refrigerant mass flowrate. For constant volumetric flowrate condition, R513A can be a drop-in substitute for R134a chiller. In the constant cooling capacity and fixed mass flowrate condition, R1234ze(E) has the similar performance to R134a and performance of low-pressure refrigerants R1233zd(E) and R1224yd(Z) is better than that of R134a.

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Details

  • Original title: An analytical comparison between R134a and alternative refrigerants in the water-cooled chiller.
  • Record ID : 30028826
  • Languages: English
  • Subject: Technology, HFCs alternatives
  • Source: 2nd IIR Conference on HFO Refrigerants and Low GWP Blends
  • Publication date: 2021/06
  • DOI: http://dx.doi.org/10.18462/iir.HFO.2021.1066
  • Document available for consultation in the library of the IIR headquarters only.

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