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Predicting in situ heat pump performance: an investigation into a single ground-source heat pump system in the context of 10 similar systems

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journal contribution
posted on 28.02.2013, 14:13 by A. Stafford, Debra LilleyDebra Lilley
Ten similar ground-source heat pump systems installed in small rural social housing bungalows in the UK have been monitored in detail over a period of more than one year. The purpose of the present work was to take one system at random, and study its performance characteristics in the context of the group, in order to explore the potential for predicting performance from a few readily obtainable parameters. The chosen system performed relatively well in summer and relatively poorly in winter (despite an average temperature lift for space-heating). This was found to be readily explicable in terms of domestic hot water set-point temperature, and compressor cycling behaviour. The latter may be affected by building fabric issues, or by user behaviour (e.g. window-opening). The study suggests that where sizeable groups of similar systems are installed in similar buildings (e.g. by social housing providers), an appropriate monitoring strategy may be to monitor a sample of installations in detail, and to predict the performance of the remainder based on limited but more easily obtained data. However, the limited dataset may need to include internal and ground-loop fluid temperatures, heat pump electricity consumption, and some detailed knowledge of building fabric and occupier practices.

History

School

  • Design

Citation

STAFFORD, A. and LILLEY, D., 2012. Predicting in situ heat pump performance: an investigation into a single ground-source heat pump system in the context of 10 similar systems. Energy and Buildings, 49, pp.536-541.

Publisher

© Elsevier

Version

AM (Accepted Manuscript)

Publication date

2012

Notes

This is the author’s version of a work that was accepted for publication in the journal Energy and Buildings. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published at: http://dx.doi.org/10.1016/j.enbuild.2012.03.001

ISSN

0378-7788

Language

en