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High-temperature heat pump two-stage configurations using low global warming potential refrigerants.
Number: 1040
Author(s) : MATEU-ROYO C., NAVARRO-ESBRÍ J., GIMÉNEZ-PRADES P., FERNANDEZ MORENO A., CERVERA BARRAGAN A., MOTA BABILONI A.
Summary
High-temperature heat pumps (HTHPs) can cover temperature lifts of about 100 K in some applications. Single-stage configurations result in a lower coefficient of performance (COP) in this scenario. This paper analyses two advanced HTHP configurations for industrial applications with specific thermal requirements. Booster cycle is considered as a potential architecture when different waste heat sources are available, whereas the extraction cycle is conceived for industrial processes of higher temperature glide. Both configurations are compared with a two-stage cycle with economizer, which is set as the reference. Moreover, several alternative low GWP refrigerants have been comprehensively analyzed to identify promising candidates to replace HFC- 245fa, the reference working fluid in HTHPs. HCFO-1233zd(E), HCFO-1224yd(Z), HFO-1336mzz(Z) and its mixture R-514A present potential as alternative refrigerants in HTHPs. According to the results, booster configuration improves COP and VHC around 95% and 320%, respectively, whereas the extraction cycle increase COP and VHC increase by 150% and 100%, respectively.
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Details
- Original title: High-temperature heat pump two-stage configurations using low global warming potential refrigerants.
- Record ID : 30028808
- Languages: English
- Subject: Technology
- Source: 2nd IIR Conference on HFO Refrigerants and Low GWP Blends
- Publication date: 2021/06
- DOI: http://dx.doi.org/10.18462/iir.HFO.2021.1040
- Document available for consultation in the library of the IIR headquarters only.
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Indexing
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Themes:
HFO et HCFO;
Industrial heat pumps - Keywords: HFO; HCFO; R1233zd(E); R1224yd(Z); R1336mzz(Z); R514A; High temperature; Heat pump; Industrial application; Low GWP; Booster; Extraction; Cycle; COP; Modelling; Two-stage system
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