Renovation Results of Finnish Single-Family Renovation Subsidies : Oil Boiler Replacement with Heat Pumps
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2022-10
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en
Pages
18
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Energies, Volume 15, issue 20
Abstract
Finland has approximately 150,000 oil-heated private homes. In 2020, the Finnish government launched subsidies for private homeowner energy renovations. In this study, we examine the impact of two new energy renovation subsidies, the ELY grant and the ARA grant, from an energy efficiency point of view. Data from these subsidies reveal that a typical energy renovation case is a building from the 1970s where the oil boiler is replaced with an air-to-water heat pump. With additional data from the Finnish Energy certificate registry, a reference 1970s house is constructed and modelled in the building simulation programme, IDA ICE 4.8. Combinations of several renovation measures are simulated: air-to-water heat pump, ground-source heat pump, ventilation heat recovery and improved insulation. We found that resorting mainly to air-to-water heat pumps is not the most energy-effective solution. Ground-source heat pumps deliver a more significant reduction in delivered energy, especially with additional measures on insulation and heat recovery. Ground-source heat pumps also demand slightly less power than air-to-water heat pumps. Onsite solar PV generation helps supplement part of the power needed for heat pump solutions. Subsidy policies should emphasize deep renovation, ventilation heat recovery and onsite electricity generation.Description
| openaire: EC/H2020/856602/EU//FINEST TWINS Funding Information: This research was supported by the Academy of Finland, a grant for DECARBON-HOME 335253, by the European Commission through the H2020 project Finest Twins (grant No. 856602) and by the Estonian Centre of Excellence in Zero Energy and Resource-Efficient Smart Buildings and Districts, ZEBE, grant 2014-2020.4.01.15-0016, funded by the European Regional Development Fund, Fortum and Neste Foundation and the K.V. Lindholms Stiftelse Foundation. Publisher Copyright: © 2022 by the authors.
Keywords
air-source heat pump, ground-source heat pump, oil boiler replacement, PV panels, renovation subsidies, single-family buildings
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Citation
Sankelo, P, Ahmed, K, Mikola, A & Kurnitski, J 2022, ' Renovation Results of Finnish Single-Family Renovation Subsidies : Oil Boiler Replacement with Heat Pumps ', Energies, vol. 15, no. 20, 7620 . https://doi.org/10.3390/en15207620