Naicker, SS orcid.org/0000-0003-3453-3617 and Rees, SJ orcid.org/0000-0003-4869-1632 (2018) Performance analysis of a large geothermal heating and cooling system. Renewable Energy, 122. pp. 429-442. ISSN 0960-1481
Abstract
Ground Source Heat Pump systems can play an important role in reducing carbon emissions associated with building heating and cooling. The efficiencies and carbon emission savings achieved, partly depend on the optimization of the design, the control of the system and its reliability during extended operation. This paper reports the detailed investigation of the performance of a large system that includes fifty-six vertical borehole heat exchangers and four large heat pumps that provide both heating and cooling. High frequency data have been collected during the initial three years of operation that allow seasonal performance factors to be derived and detailed analysis of system operation. Annual performance has been found to be satisfactory overall but is highly variable depending on operating conditions and control system actions. A series of analyses have been carried out to investigate the roles of circulating pump energy, control system operation and dynamic behaviour. A series of recommendations concerned with better design for part-load operation, reduction in pump energy demands and more robust control systems, are made with a view to improved system design and operation. Data from the study are being made available for further work on performance analysis and model validation studies.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2018 Elsevier Ltd. This is an author produced version of a paper published in Renewable Energy. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Geothermal; Ground source heat pump; System performance factor; Borehole heat exchanger; Performance analysis |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Civil Engineering (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 28 Feb 2018 16:25 |
Last Modified: | 16 Dec 2024 10:27 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.renene.2018.01.099 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:127984 |