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Comparative life cycle assessment of the ground source heat pump vs air source heat pump

TitleComparative life cycle assessment of the ground source heat pump vs air source heat pump
Publication TypeArticolo su Rivista peer-reviewed
Year of Publication2022
AuthorsViolante, A.C., Donato F., Guidi G., and Proposito Marco
JournalRenewable Energy
KeywordsAir conditioning, Air source heat pump, Air source heat pumps, Air-source heat pump systems, Air-source heat pumps, Comparative life cycle assessment, energy efficiency, Energy efficient, Environmental impact, Geothermal energy, Geothermal heat pumps, Ground source heat pump, Groundsource heat pump (GSHP), Housing, IMPACT 2002+, ISO Standards, life cycle, Pumps, Simapro, Simapro 9.0 code

In view of the decarbonisation of the thermal sector, the use of ground source heat pumps (GSHP) plays a key role. The geothermal system coupled with heat pumps, is the most energy efficient and environmentally sustainable heating and cooling system because the ground temperature is constant all year round, unlike traditional air-source heat pumps (ASHP). A comparative life cycle assessment of a pilot GSHP system, operating in the ENEA Casaccia Research Centre (Italy), and a conventional ASHP was performed. In accordance with ISO standard, the impacts on the four damage criteria were evaluated for each phase of the entire life cycle (production, installation, operation and end-of-life), using the SimaPro 9.0 software. The GSHP system has significant impacts compared to the other ASHP system components during manufacturing and installation. In contrast, slightly higher impacts of the ASHP system are recorded during the operational phase. It should be considered that the geothermal probe circuit has a useful life of 100 years, which allows for multiple operational life cycles of the geothermal plant. Therefore, the paper highlights that the GSHP system, as a whole, is more energy efficient and has a lower long-term environmental impact, compared to a traditional air conditioning system. © 2022 Elsevier Ltd


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Citation KeyViolante20221029