Summary
For clarify main affecting factors on air-source transcritical CO2 heat pump water heaters, and the influence extent of these main affecting factors, at fixed water inlet temperature of 12°C, an experimental research was conducted on a prototype in a range of ambient temperatures (-15/35°C) and water outlet temperatures (55–80°C). Based on the experimental results, effect of water outlet temperatures and ambient temperatures on the optimal discharge pressure and system COP was illustrated, and with change of water outlet temperatures and ambient temperatures, variation of CO2 gas cooler outlet temperatures, evaporating temperatures and other cycle variables was presented and interpreted. According established simulation model, we conducted simulation for the prototype and the cycle respectively adopted another two gas coolers with difference heat transfer surface. As one conclusion, for an established plant, correlation for the optimal discharge pressure as the function of ambient temperatures and water outlet temperatures can be achieved by fitting numerous simulation or experimental results.
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Details
- Original title: Experimental investigation on air-source transcritical CO2 heat pump water heater system at a fixed water inlet temperature.
- Record ID : 30007792
- Languages: English
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 36 - n. 3
- Publication date: 2013/05
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Indexing
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Themes:
Commercial heat pumps;
CO2 - Keywords: Hot water; Prototype; Simulation; Heat pump; Expérimentation; Transcritical cycle; COP; CO2
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The experimental investigation on a novel trans...
- Author(s) : CAO F., CUI C., WEI X., et al.
- Date : 2019/10
- Languages : English
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 106
- Formats : PDF
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Performance of a transcritical CO2 heat pump fo...
- Author(s) : SARKAR J., BHATTACHARYYA S., RAM GOPAL M.
- Date : 2009/06/21
- Languages : English
- Source: 2009 ASHRAE Annual Conference CD. Transactions papers presented at the 2009 ASHRAE Annual Conference: Louisville, KY, June 2009. Volume 115, part 2.
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The performance of a transcritical CO2 cycle wi...
- Author(s) : KIM S. G., KIM Y. J., LEE G., et al.
- Date : 2005/11
- Languages : English
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 28 - n. 7
- Formats : PDF
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Transcritical CO2 heat pump prototype developme...
- Author(s) : SARKAR J., BHATTACHARYYA S., RAMGOPAL M.
- Date : 2007/08/21
- Languages : English
- Source: ICR 2007. Refrigeration Creates the Future. Proceedings of the 22nd IIR International Congress of Refrigeration.
- Formats : PDF
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Experimental investigation of the extreme seeki...
- Author(s) : CUI C., ZONG S., SONG Y., YIN X., CAO F.
- Date : 2022/01
- Languages : English
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 133
- Formats : PDF
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