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Semi-empirical evaluation of HCFO-1224yd(z) as a replacement for HFC-245fa in high temperature heat pumps.
Number: 1117
Author(s) : MATEU-ROYO C., MOTA BABILONI A., MOLÉS F., AMAT-ALBUIXECH M., NAVARRO-ESBRÍ J.
Summary
This paper investigates a promising low-GWP refrigerant HCFO-1224yd(Z) as an alternative replacement for HFC-245fa in high temperature heat pumps. A comprehensive thermophysical properties analysis was realised along with thermodynamic modelling of a single stage cycle with Internal Heat Exchanger (IHX) and semi-empirical drop-in test replacement. The heat source temperature was fixed in 80 ºC, whereas the heat sink temperature was varied from 110 to 140 ºC to cover a wide range of industrial applications. The theoretical and semi-empirical results illustrate that the heating capacity of HCFO-1224yd(Z) becomes around 8.9% lower than HFC-245fa. However, the higher suction density of HCFO-1224yd(Z) compared to the reference fluid can compensate this phenomenon, reducing the compressor power consumption. Hence, HCFO-1224yd(Z) presents a COP increase up to 4.5% compared to the reference fluid. At heat sink temperature of 140 ºC, HCFO-1224yd(Z) shows a COP of 2.33, whereas HFC-245fa has a value of 2.23. Therefore, HCFO-1224yd(Z) can be used as an alternative to HFC-245fa in high temperature heat pumps due to its proper thermophysical and environmental properties.
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Details
- Original title: Semi-empirical evaluation of HCFO-1224yd(z) as a replacement for HFC-245fa in high temperature heat pumps.
- Record ID : 30027645
- Languages: English
- Subject: HFCs alternatives
- Source: IIR Rankine Conference 2020.
- Publication date: 2020/07/31
- DOI: http://dx.doi.org/10.18462/iir.rankine.2020.1117
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Indexing
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Themes:
HFO et HCFO;
Heat pumps techniques;
Industrial heat pumps - Keywords: HCFO; R1224yd(Z); R245fa; GWP; Heat pump; High temperature; Substitute; Expérimentation
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