Summary
Recently there has been a growing interest in utilization of alternative refrigerants for residential and commercial HVAC&R systems due to the potential environmental impacts of conventional fluids (CFCs and HFCs). Hydrofluoroolefins such as R1234yf and R1234ze(E) has shown promising performance and are being extensively considered for range of heat pump applications. This study illustrates the performance evaluation of R1234yf and R1234ze(E) as drop-in-replacement for R134a for heat pump water heating (HPWH). A component-based model is used to predict the performance. Key performance parameters such as unified energy factor, first hour rating and thermal stratification in the water tank are investigated. Along with system modeling appropriate experiments to demonstrate the performance improvements. Both modeling and experimental efforts suggest that HFOs when deployed as alternative refrigerants can provide comparable system performance to that of the baseline system containing R134a. Other concerning parameters such as total system refrigerant charge, the condenser discharge temperature and thermal stratification in water storage tan
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Details
- Original title: Hydrofluoroolefins as refrigerants for heat pump water heating applications.
- Record ID : 30024672
- Languages: English
- Source: 2018 Purdue Conferences. 17th International Refrigeration and Air-Conditioning Conference at Purdue.
- Publication date: 2018/07/09
Links
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See the conference proceedings
Indexing
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Themes:
Heat pumps techniques;
HFCs - Keywords: Water heater; R1234yf; R1234ze(E); Heat pump; Performance; Modelling; HFO; Expérimentation
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R1234yf and R1234ze(E) as low-GWP refrigerants ...
- Author(s) : NAWAZ K., SHEN B., ELATAR A., et al.
- Date : 2017/10
- Languages : English
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 82
- Formats : PDF
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Influence of HFO refrigerants on the viscoelast...
- Author(s) : EYERER S., EYERER P., WIELAND C., et al.
- Date : 2018/09
- Languages : English
- Source: 1st IIR international conference on the application of HFO refrigerants, Birmingham, September 2-5 2018.
- Formats : PDF
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Influence of HFO refrigerants on the viscoelast...
- Author(s) : EYERER S.
- Date : 2018/09
- Languages : English
- Source: 1st IIR international conference on the application of HFO refrigerants, Birmingham, September 2-5 2018.
- Formats : PDF
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Thermodynamic properties of hydrofluoroolefin (...
- Author(s) : AL GHAFRI S. Z. S., ROWLAND D., AKHFASH M., et al.
- Date : 2019/02
- Languages : English
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 98
- Formats : PDF
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Bombas de calor de alta temperatura y fluidos d...
- Author(s) : NAVARRO-ESBRÍ J., MATEU-ROYO C., AMAT-ALBUIXECH M., et al.
- Date : 2018/06/19
- Languages : Spanish
- Source: CYTEF 2018. IX Congreso Ibérico y VII Congreso Iberoamericano de Ciencias y Técnicas del Frío, Valencia, España, 19-21 junio 2018.
- Formats : PDF
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