Frigorigènes alternatifs pour les chauffe-eau à pompe à chaleur : opportunités et défis.
Alternate refrigerants for heat pump water heater applications - Opportunities and challenges.
Numéro : 2692
Auteurs : NAWAZ K., SHEN B., ELATAR A., BAXTER V., ABDELAZIZ O.
Résumé
Growing awareness of the potential environmental impacts of conventional refrigerants (CFCs and HFCs) has led to efforts to identify suitable alternative refrigerants for various heat pump applications with minimum environmental impact. This study is focused on the performance evaluation of various alternatives including hydrocarbon (HC), hydroflouroolefins (HFO), and CO2 as drop-in-replacement for R134a for heat pump water heating (HPWH). Fundamental thermophysical properties have been used to highlight the important performance characteristics of the systems when such fluids are deployed working medium. Key performance parameters such as unified energy factor, first hour rating and thermal stratification in the water tank are investigated using simulation and experimental approaches. The findings suggest that both alternative refrigerants could provide comparable system performance to that of the baseline system containing R134a. System refrigerant charge and the condenser discharge temperature are established to investigate the potential of hydrocarbon refrigerants to substitute R134a without significant system modifications. The overall objective is to identify the major challenges and opportunities for alternative refrigerants for heat pump water heater in terms of performance, required infrastructure and potential for drop-in-replacement. Notice: This manuscript has been authored in part by UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the US Department of Energy (DOE). The US government retains and the publisher, by accepting the article for publication, acknowledges that the US government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for US government purposes. DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan).
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Pages : 10
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Détails
- Titre original : Alternate refrigerants for heat pump water heater applications - Opportunities and challenges.
- Identifiant de la fiche : 30028582
- Langues : Anglais
- Sujet : Alternatives aux HFC
- Source : 2021 Purdue Conferences. 18th International Refrigeration and Air-Conditioning Conference at Purdue.
- Date d'édition : 05/2021
- Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.
Liens
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Indexation
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Parametric studies of heat pump water heater us...
- Auteurs : SHEN B., NAWAZ K., ELATAR A.
- Date : 11/2021
- Langues : Anglais
- Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 131
- Formats : PDF
Voir la fiche
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Evaluating R450A as a drop-in replacement for R...
- Auteurs : GATARIC P., LORBEK L.
- Date : 08/2021
- Langues : Anglais
- Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 128
- Formats : PDF
Voir la fiche
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Alternate refrigerants for Heat Pump Water Heat...
- Auteurs : NAWAZ K., SHEN B., ELATAR A., BAXTER V., ABDELAZIZ O.
- Date : 31/08/2021
- Langues : Anglais
- Source : 13th IEA Heat Pump Conference 2021: Heat Pumps – Mission for the Green World. Conference proceedings [full papers]
- Formats : PDF
Voir la fiche
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Drop-in experiments and exergy assessment of HF...
- Auteurs : THU K., TAKEZATO K., TAKATA N., MIYAZAKI T., HIGASHI Y.
- Date : 01/2021
- Langues : Anglais
- Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 121
- Formats : PDF
Voir la fiche
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Drop-in analysis of R450A and R513A as low-GWP ...
- Auteurs : MOLINAROLI L., LUCCHINI A., COLOMBO L. P. M.
- Date : 03/2022
- Langues : Anglais
- Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 135
- Formats : PDF
Voir la fiche