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Potential of GSHP coupled with PV systems for retrofitting urban areas in different European climates based on archetypes definition
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Potential of GSHP coupled with PV systems for retrofitting urban areas in different European climates based on archetypes definition
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Journal Article
Potential of GSHP coupled with PV systems for retrofitting urban areas in different European climates based on archetypes definition
2024
Overview
•Dataset of energy demand for terrace houses including self-sufficiency indexes.•Archetypes are representative of 3 climatic zones and ground thermal conductivities.•Archetypes’ characterization supports energy policies on ground source heat pumps.•The methodology aims to be replicable supporting district scale retrofit strategies.•Integrated data collection will create the description of the whole building stock.
According to the recent policies regarding energy use in buildings and the need of retrofit strategies, the aim of this work is to support policies concerning the installation of ground source heat exchangers in urban and historical areas, raising the awareness on the potential energy saving achievable with optimal sizing and limited impact on the urban environment. Archetypes have been developed distinguishing among existing and historic buildings, focusing on single-family terrace houses, which are the typical residential buildings in European historic centres.
A methodology for the optimal sizing of ground source heat pumps, eventually considering dual-source system or air system has been developed combining simulations of a photovoltaic system to estimate the self-sufficiency and the self-consumption for five orientations of the building. Extreme results have been obtained for warm climates, with negligible heating energy demand and possibly free cooling systems rather than traditional cooling systems needed in wintertime. Penalty temperature was acceptable despite unbalanced energy demands. With proper inclination, photovoltaic systems could provide up to 40% of self-sufficiency share also in northern climates. An energy - economic analysis was carried out obtaining a variety of cases representing a general overview of the European building stock and the potential benefits achievable in terms of renewable energy share, energy savings and economic investments needed to be extended to simulations at urban scale.
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Publisher
Elsevier B.V,KeAi Communications Co., Ltd
