IIR document
Developing a combined compressor expander heat pump: experimental evaluation of the compressor and expander.
Number: pap. ID: 238
Author(s) : SALEHI KOUHESTANI M., HEWITT N. J., HUANG M. J.
Summary
This study outlines the integration of a new rotary compressor-expander combined unit within a water-to-water heat pump to achieve higher coefficient of performance (COP) and heating capacity. This is particularly true when the heat pump operates as a retrofit unit operating at higher temperatures (>55°C) typically encountered in standard UK heating systems. In a refrigeration cycle, the expansion process is performed as an isenthalpic process which typically causes the refrigerant to enter the evaporator with approximate quality of 25% or more and this refrigerant is therefore unavailable for heat transfer in the evaporator. In this research, the aim is to improve the isentropic efficiency of expansion process by applying a rotary expander compressor which has an integrated turbine. A higher isentropic efficiency in expansion process leads to higher heating capacity by absorbing more heat in evaporator. Also the turbine can supply between 5-15% of compressor input power from the expansion process, so a higher COP will be achievable.
Available documents
Format PDF
Pages: 8 p.
Available
Public price
20 €
Member price*
Free
* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).
Details
- Original title: Developing a combined compressor expander heat pump: experimental evaluation of the compressor and expander.
- Record ID : 30002319
- Languages: English
- Source: Proceedings of the 23rd IIR International Congress of Refrigeration: Prague, Czech Republic, August 21-26, 2011. Overarching theme: Refrigeration for Sustainable Development.
- Publication date: 2011/08/21
Links
See other articles from the proceedings (569)
See the conference proceedings
-
Exergy analysis of a combined compressor expand...
- Author(s) : SALEHI KOUHESTANI M., HEWITT N. J., HUANG M. J.
- Date : 2011/08/21
- Languages : English
- Source: Proceedings of the 23rd IIR International Congress of Refrigeration: Prague, Czech Republic, August 21-26, 2011. Overarching theme: Refrigeration for Sustainable Development.
- Formats : PDF
View record
-
Modelling and experimental investigation on the...
- Author(s) : YANG B., SUN S., PENG X., et al.
- Date : 2008/07/14
- Languages : English
- Source: 2008 Purdue Conferences. 19th International Compressor Engineering Conference at Purdue & 12th International Refrigeration and Air-Conditioning Conference at Purdue [CD-ROM].
- Formats : PDF
View record
-
Experimental investigation of a liquid-flooded ...
- Author(s) : HUGENROTH J., BRAUN J., GROLL E., et al.
- Date : 2008/11
- Languages : English
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 31 - n. 7
- Formats : PDF
View record
-
Continuous cooling compressor for water refrige...
- Author(s) : SHOYAMA T., SUN H., KAWANO B., MATSUI M.
- Date : 2021/09
- Languages : English
- Source: 12th International Conference on Compressors and their Systems
- Formats : PDF
View record
-
Analysis of the revolving vane (RV-0) expander....
- Author(s) : SUBIANTORO A., OOI K. T.
- Date : 2012/09
- Languages : English
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 35 - n. 6
- Formats : PDF
View record