ShareSummary
A novel CO2 two stage compressor has been developed. The developed compressor equips one rotary and one scroll compression chambers as first and second stage respectively. For efficiency improvement, authors measured the cylinder pressure in each stage and conducted loss classification in the compressor. By adopting appropriate compression type in each stage, and by decreasing critical loss found by measuring the pressure, it resulted in 6 and 10% improvement of heating capacity and COP respectively on rated condition, and 25% and over 50% improvement on deep-frozen condition compared with conventional single stage compressor. The developed compressor is installed on our newly developed commercial heat pump water heater.
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Details
- Original title: Development of R744 two stage compressor for commercial heat pump water heater.
- Record ID : 30006997
- Languages: English
- Source: 2012 Purdue Conferences. 21st International Compressor Engineering Conference at Purdue.
- Publication date: 2012/07/16
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Indexing
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Themes:
Compressors;
Commercial heat pumps;
CO2 - Keywords: Hot water; Commercial application; R744; Two-stage system; Heat pump; Development; Compressor; CO2
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Development of high efficiency carbon dioxide c...
- Author(s) : PETERSEN M., BOWERS C. D., ELBEL S., et al.
- Date : 2012/07/16
- Languages : English
- Source: 2012 Purdue Conferences. 14th International Refrigeration and Air-Conditioning Conference at Purdue.
- Formats : PDF
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The development of a CO2 heat pump water heater...
- Author(s) : SHIKICHI K.
- Date : 2004
- Languages : Japanese
- Source: Refrigeration - vol. 79 - n. 917
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Development of two-stage compression and cascad...
- Author(s) : HASEGAWA H., SAIKAWA M., HASHIMOTO K., IWATSUBO T.
- Date : 1996/02/16
- Languages : English
- Source: ASHRAE Transactions.
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Assessment of a two-stage compression heat pump...
- Author(s) : XING M., YU J.
- Date : 2015/08/16
- Languages : English
- Source: Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
- Formats : PDF
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Development of dual compressor system using com...
- Author(s) : YU S., OGATA T., WADA M., et al.
- Date : 2012/07/16
- Languages : English
- Source: 2012 Purdue Conferences. 21st International Compressor Engineering Conference at Purdue.
- Formats : PDF
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