A Spatially-Explicit Economic and Financial Assessment of Closed-Loop Ground-Source Geothermal Heat Pumps: A Case Study for the Residential Buildings of Valle d’Aosta Region

Ground Source Heat Pumps (GSHPs) take advantage of the high thermal inertia of the ground to achieve a higher energy efficiency compared to Air Source Heat Pumps. GSHPs, therefore, have the potential to reduce heating, cooling, and domestic hot water costs, however the high installation cost of bore...

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Autores principales: Antonio Novelli, Valentina D’Alonzo, Simon Pezzutto, Rubén Aarón Estrada Poggio, Alessandro Casasso, Pietro Zambelli
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Publicado: MDPI AG 2021
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Acceso en línea:https://doaj.org/article/203f192ca59c467d89c6413c0c13dc37
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spelling oai:doaj.org-article:203f192ca59c467d89c6413c0c13dc372021-11-25T19:01:41ZA Spatially-Explicit Economic and Financial Assessment of Closed-Loop Ground-Source Geothermal Heat Pumps: A Case Study for the Residential Buildings of Valle d’Aosta Region10.3390/su1322125162071-1050https://doaj.org/article/203f192ca59c467d89c6413c0c13dc372021-11-01T00:00:00Zhttps://www.mdpi.com/2071-1050/13/22/12516https://doaj.org/toc/2071-1050Ground Source Heat Pumps (GSHPs) take advantage of the high thermal inertia of the ground to achieve a higher energy efficiency compared to Air Source Heat Pumps. GSHPs, therefore, have the potential to reduce heating, cooling, and domestic hot water costs, however the high installation cost of borehole heat exchangers (BHEs) limits the growth of such installations. Nevertheless, GSHPs can be profitable under certain conditions (climate, expensive fuels, subsidies, etc.), which can be identified using geo-referenced data and Geographical Information Systems (GIS). The proposed work investigates the economic and financial ability of GSHPs to cover the heat demand of the residential building stock of the Italian region Valle d’Aosta. To identify the opportunities offered by GSHPs in the Valle d’Aosta region, more than 40,000 residential buildings were analyzed using a GIS-based method. The return on the investment was then assessed based on the occurrence of two conditions—the Italian subsidies of the “Conto Termico” and the installation of rooftop photovoltaic (PV) systems—which contribute to the reduction of the initial and operation costs, respectively. The life-cycle costs of the four resulting combinations were compared with conventional systems composed of an oil/gas boiler and an air-source chiller. One of the main findings of this study is that subsidies exert a key role in the financial feasibility of GSHPs, especially for replacing gas boilers, whereas the presence of a PV system has a minor influence on the financial analysis carried out.Antonio NovelliValentina D’AlonzoSimon PezzuttoRubén Aarón Estrada PoggioAlessandro CasassoPietro ZambelliMDPI AGarticleGeographic Information System (GIS)Ground Source Heat Pumps (GSHPs)closed-loopfinancial analysisLevelized Cost of Energy (LCOE)Discounted Payback Period (DPP)Environmental effects of industries and plantsTD194-195Renewable energy sourcesTJ807-830Environmental sciencesGE1-350ENSustainability, Vol 13, Iss 12516, p 12516 (2021)
institution DOAJ
collection DOAJ
language EN
topic Geographic Information System (GIS)
Ground Source Heat Pumps (GSHPs)
closed-loop
financial analysis
Levelized Cost of Energy (LCOE)
Discounted Payback Period (DPP)
Environmental effects of industries and plants
TD194-195
Renewable energy sources
TJ807-830
Environmental sciences
GE1-350
spellingShingle Geographic Information System (GIS)
Ground Source Heat Pumps (GSHPs)
closed-loop
financial analysis
Levelized Cost of Energy (LCOE)
Discounted Payback Period (DPP)
Environmental effects of industries and plants
TD194-195
Renewable energy sources
TJ807-830
Environmental sciences
GE1-350
Antonio Novelli
Valentina D’Alonzo
Simon Pezzutto
Rubén Aarón Estrada Poggio
Alessandro Casasso
Pietro Zambelli
A Spatially-Explicit Economic and Financial Assessment of Closed-Loop Ground-Source Geothermal Heat Pumps: A Case Study for the Residential Buildings of Valle d’Aosta Region
description Ground Source Heat Pumps (GSHPs) take advantage of the high thermal inertia of the ground to achieve a higher energy efficiency compared to Air Source Heat Pumps. GSHPs, therefore, have the potential to reduce heating, cooling, and domestic hot water costs, however the high installation cost of borehole heat exchangers (BHEs) limits the growth of such installations. Nevertheless, GSHPs can be profitable under certain conditions (climate, expensive fuels, subsidies, etc.), which can be identified using geo-referenced data and Geographical Information Systems (GIS). The proposed work investigates the economic and financial ability of GSHPs to cover the heat demand of the residential building stock of the Italian region Valle d’Aosta. To identify the opportunities offered by GSHPs in the Valle d’Aosta region, more than 40,000 residential buildings were analyzed using a GIS-based method. The return on the investment was then assessed based on the occurrence of two conditions—the Italian subsidies of the “Conto Termico” and the installation of rooftop photovoltaic (PV) systems—which contribute to the reduction of the initial and operation costs, respectively. The life-cycle costs of the four resulting combinations were compared with conventional systems composed of an oil/gas boiler and an air-source chiller. One of the main findings of this study is that subsidies exert a key role in the financial feasibility of GSHPs, especially for replacing gas boilers, whereas the presence of a PV system has a minor influence on the financial analysis carried out.
format article
author Antonio Novelli
Valentina D’Alonzo
Simon Pezzutto
Rubén Aarón Estrada Poggio
Alessandro Casasso
Pietro Zambelli
author_facet Antonio Novelli
Valentina D’Alonzo
Simon Pezzutto
Rubén Aarón Estrada Poggio
Alessandro Casasso
Pietro Zambelli
author_sort Antonio Novelli
title A Spatially-Explicit Economic and Financial Assessment of Closed-Loop Ground-Source Geothermal Heat Pumps: A Case Study for the Residential Buildings of Valle d’Aosta Region
title_short A Spatially-Explicit Economic and Financial Assessment of Closed-Loop Ground-Source Geothermal Heat Pumps: A Case Study for the Residential Buildings of Valle d’Aosta Region
title_full A Spatially-Explicit Economic and Financial Assessment of Closed-Loop Ground-Source Geothermal Heat Pumps: A Case Study for the Residential Buildings of Valle d’Aosta Region
title_fullStr A Spatially-Explicit Economic and Financial Assessment of Closed-Loop Ground-Source Geothermal Heat Pumps: A Case Study for the Residential Buildings of Valle d’Aosta Region
title_full_unstemmed A Spatially-Explicit Economic and Financial Assessment of Closed-Loop Ground-Source Geothermal Heat Pumps: A Case Study for the Residential Buildings of Valle d’Aosta Region
title_sort spatially-explicit economic and financial assessment of closed-loop ground-source geothermal heat pumps: a case study for the residential buildings of valle d’aosta region
publisher MDPI AG
publishDate 2021
url https://doaj.org/article/203f192ca59c467d89c6413c0c13dc37
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