Long-Term Performance Measurement and Analysis of a Small-Scale Ground Source Heat Pump System

Hao Liu, Hongyi Zhang and Saqib Javed
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Hao Liu: Division of Energy and Building Design, Department of Architecture and the Built Environment, Lund University, 221 00 Lund, Sweden
Hongyi Zhang: Division of Energy and Building Design, Department of Architecture and the Built Environment, Lund University, 221 00 Lund, Sweden
Saqib Javed: Division of Building Services, Department of Architecture and Civil Engineering, Chalmers University of Technology, 412 96 Gothenburg, Sweden

Energies, 2020, vol. 13, issue 17, 1-30

Abstract: Recent data suggest that heat pumps, despite having the potential to cover over 90% of the global space and water heating demands, only provide less than 5% of global heating. Heat pumps, in general, and ground source heat pumps, specifically, offer significant potential for energy savings and carbon emissions reduction in buildings. The realization of these potential benefits, however, requires proper design, installation, and operation of the entire heat pump system. This paper presents the performance analysis of a Swedish ground source heat pump system providing space heating and hot water to a sports clubhouse. The installation has been carefully instrumented to enable full characterization of the whole system including auxiliary components such as circulation pumps and supplementary heating. Seasonal performance factors, calculated for monthly and annual periods using high-quality, high-resolution measurement data collected over three years of system operation, have been reported based on the SEPEMO (SEasonal PErformance factor and MOnitoring for heat pump systems) and Annex 52 boundary schemes for evaluating and benchmarking the performance of the ground source heat pump system. The auxiliary system components were shown to have a large impact on the overall performance of the system. In particular, the legionella protection system was found to affect performance considerably. Recommendations as to how to improve the performance of the system under study and other similar systems are made from the design, installation, and operation perspectives.

Keywords: ground source heat pumps; ground heat exchanger; system performance; seasonal performance factors; space heating; hot water (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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