IIR document
Theoretical and experimental investigation of startup and shutdown behavior of residential heat pumps.
Author(s) : UHLMANN M., BERTSCH S. S.
Type of article: Article, IJR article
Summary
Standardized efficiency and capacity measurements of residential heat pumps deviate from real time performance due to several factors. While standardized measurements are performed at steady state operation, heat pumps in the field are usually capacity controlled using on-off cycling. In order to determine the difference between these operating modes, laboratory and field measurements were conducted to verify transient models of air-source and geothermal heat pumps. Heat pump performance was then simulated for several operating conditions typical for central European installations. It was shown that air-source heat pumps experience performance losses of only 1–2% for short cycling times. In the case of geothermal heat pumps, the recovery of the ground probe during the off time can lead to efficiency gains of up to 5%. Results of this study help to provide improved control strategies for heat pumps using on-off cycling as capacity control. They also support the conclusion that standardized measurements according to EN14511 accurately represent the efficiency of residential heat pumps both in continuous and in part load operation.
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Details
- Original title: Theoretical and experimental investigation of startup and shutdown behavior of residential heat pumps.
- Record ID : 30005965
- Languages: English
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 35 - n. 8
- Publication date: 2012/12
Links
See other articles in this issue (26)
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Indexing
- Themes: Residential heat-pumps
- Keywords: Operation; Geothermy; Control (automatic); Simulation; Domestic heat pump; Model; Expérimentation; Starting; COP; Heat exchanger
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Investigating control strategies for a domestic...
- Author(s) : SAKELLARI D., FORSÉN M., LUNDQVIST P.
- Date : 2006/06
- Languages : English
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 29 - n. 4
- Formats : PDF
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Geothermal heat pump in heating mode: modeling ...
- Author(s) : CHARGUI R., SAMMOUDA H., FARHAT A.
- Date : 2012/11
- Languages : English
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 35 - n. 7
- Formats : PDF
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A geothermal district heating system supplying ...
- Author(s) : LI T., CHEN W., YU T., LI X., WANG B., SHI W.
- Date : 2023/08/21
- Languages : English
- Source: Proceedings of the 26th IIR International Congress of Refrigeration: Paris , France, August 21-25, 2023.
- Formats : PDF
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Ground-source heat pump with a 100-m deep boreh...
- Author(s) : SOLDO V., RUSEVLJAN M., CURKO T., et al.
- Date : 2010/06/13
- Languages : English
- Source: IIR/Eurotherm sustainable refrigeration and heat pump technology conference. Proceedings of the Eurotherm Seminar No. 88, Stockholm, Sweden, June 13-16, 2010.
- Formats : PDF
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Measurement and simulation of start-up and shut...
- Author(s) : UHLMANN M., BERTSCH S. S.
- Date : 2010/07/12
- Languages : English
- Formats : PDF
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