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Practical considerations in the deployment of ground source heat pumps in older properties - a case study
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McMahon, Richard A., Santos, Hugo and Sobral Mourao, Zanaida (2018) Practical considerations in the deployment of ground source heat pumps in older properties - a case study. Energy & Buildings, 159 . pp. 54-65. ISSN 0378-7788.
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Official URL: https://doi.org/10.1016/j.enbuild.2017.08.067
Abstract
A ground-sourced heat pump (GSHP) was installed in a former Vicarage in Cambridgeshire, with a mix of solid wall structure built in the late 1800s and cavity wall section built in the 2000s, previously heated by oil. This type of building is usually considered unsuitable for heat pumps, unless substantial insulation work and extensive replacement of radiators are undertaken. Although the building had undergone a degree of retrofit to increase insulation, the GSHP was installed with the existing radiators. A detailed thermal model for the house was built in ESP-r and validated against experimental measurements taken from sensors in every room. The expected heating demands were computed from the model based on weather data and the GSHP system was designed accordingly. A compromise was made between minimizing the size of the heat pump and the achievable energy savings, which could have important implications for the way incentives for low-emissions heating systems are set up. Using the initial SAP assessment would have led to a substantial oversizing of the heat pump. The data collected so far show that an SPF of 2.9 has been achieved whilst maintaining comfortable (18 °C) internal temperatures and emissions of CO2 have been reduced by 70%.
| Item Type: | Journal Article | |||||||||
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| Subjects: | Q Science > Q Science (General) T Technology > TA Engineering (General). Civil engineering (General) T Technology > TD Environmental technology. Sanitary engineering T Technology > TH Building construction |
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| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | |||||||||
| Library of Congress Subject Headings (LCSH): | Ground source heat pump systems, Greenhouse gas mitigation, Heating -- Equipment and supplies, Buildings -- Energy conservation -- Great Britain | |||||||||
| Journal or Publication Title: | Energy & Buildings | |||||||||
| Publisher: | Elsevier | |||||||||
| ISSN: | 0378-7788 | |||||||||
| Official Date: | 15 January 2018 | |||||||||
| Dates: |
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| Volume: | 159 | |||||||||
| Page Range: | pp. 54-65 | |||||||||
| Status: | Peer Reviewed | |||||||||
| Publication Status: | Published | |||||||||
| Access rights to Published version: | Restricted or Subscription Access | |||||||||
| Date of first compliant deposit: | 20 December 2017 | |||||||||
| Date of first compliant Open Access: | 30 August 2018 | |||||||||
| RIOXX Funder/Project Grant: |
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