IIR document
Possibilities of improving the thermodynamic working conditions of heat pumps for heat recovery.
Author(s) : NOWOTNY S.
Type of article: Article, IJR article
Summary
The possibility of improving the performance of heat pump systems when the source temperature is 40°C and the duty temperature is 80°C is investigated. Normal single-stage or two-stage vapour compression systems using either R11, R12, R21 or ammonia are taken as the starting point. The advantages of using compression superheat, especially with R 12, are demonstrated. The Altenkirch cycle in which ammonia, desorbed from an aqueous solution at the heat sink temperature, is mechanically compressed and then re-absorbed at the heating duty temperature, is studied. It is concluded that the reduced power consumption of this cycle more than compensates for its higher capital cost.
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Pages: 171-175
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Details
- Original title: Possibilities of improving the thermodynamic working conditions of heat pumps for heat recovery.
- Record ID : 30000827
- Languages: English
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 2 - n.3
- Publication date: 1979/05
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Indexing
- Themes: Heat pumps techniques
- Keywords: Thermodynamics; Enhancement; Heat recovery; Heat pump; Performance
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HEAT PUMPS, WHERE ARE IMPROVEMENTS POSSIBLE ? A...
- Author(s) : LORENTZEN G.
- Date : 1985/06/19
- Languages : English
- Source: Systems and components for large heat pumps.
- Formats : PDF
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HEAT PUMPS. WHERE ARE IMPROVEMENTS POSSIBLE? AN...
- Author(s) : LORENTZEN G.
- Date : 1986
- Languages : English
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 9 - n. 2
- Formats : PDF
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HEAT PUMPS. THERMODYNAMIC CONSIDERATIONS. POSSI...
- Author(s) : MATTAROLO L.
- Date : 1986
- Languages : Italian
- Source: Termotecnica - vol. 40 - n. 1
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- Author(s) : ZHEN B., LIU Z. H., WANG Q., et al.
- Date : 2007/02
- Languages : Chinese
- Source: Journal of Refrigeration - vol. 28 - n. 1
- Formats : PDF
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Improving heating performance of a MPS heat pum...
- Author(s) : PARK J. T., OH S. Y., SONG C. H., et al.
- Date : 2006/07/17
- Languages : English
- Source: 2006 Purdue Conferences. 18th International Compressor Engineering Conference at Purdue & 11th International Refrigeration and Air-Conditioning Conference at Purdue [CD-ROM].
- Formats : PDF
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