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Energy and economic analysis of air-to-air heat pumps as an alternative to domestic gas boiler heating systems in the South of Italy

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  • Ala, G.
  • Orioli, A.
  • Di Gangi, A.

Abstract

According to the electricity tariff recently issued by the Italian government for the domestic heating systems fed with heat pumps (HP), an energy and economic analysis was carried out with the aim of investigating the effectiveness of the air-to-air heat pump systems (HPS) as an alternative to the traditional heating using domestic gas boilers systems (GBS). For the purpose of this study, the apartments of three residential buildings were examined. The hourly heating loads were calculated with the ASHRAE radiant time series and the coefficient of performance (COP) of the HPs was evaluated for each operating condition. The costs for the heating system installation and electricity and/or gas bills were combined with the benefits, related to the current promoting tax credit program. The study turned out that the time when the GBS convenience surpasses the HPS mainly depends on the amount of thermal energy consumed in the year, although other important features, such as the domestic electricity consumption and the kind of energy used to supply the domestic hot water system and the cookers, play a relevant role in making the best choice between HPS and GBS.

Suggested Citation

  • Ala, G. & Orioli, A. & Di Gangi, A., 2019. "Energy and economic analysis of air-to-air heat pumps as an alternative to domestic gas boiler heating systems in the South of Italy," Energy, Elsevier, vol. 173(C), pages 59-74.
    • Handle: RePEc:eee:energy:v:173:y:2019:i:c:p:59-74
    DOI: 10.1016/j.energy.2019.02.011
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    References listed on IDEAS

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    1. Sørensen Torekov, Mikkel & Bahnsen, Niels & Qvale, Bjørn, 2007. "The relative competitive positions of the alternative means for domestic heating," Energy, Elsevier, vol. 32(5), pages 627-633.
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    Cited by:

    1. Darko Goričanec & Igor Ivanovski & Jurij Krope & Danijela Urbancl, 2020. "The Exploitation of Low-Temperature Hot Water Boiler Sources with High-Temperature Heat Pump Integration," Energies, MDPI, vol. 13(23), pages 1-12, November.
    2. Fabian Ochs & William Monteleone & Georgios Dermentzis & Dietmar Siegele & Christoph Speer, 2022. "Compact Decentral Façade-Integrated Air-to-Air Heat Pumps for Serial Renovation of Multi-Apartment Buildings," Energies, MDPI, vol. 15(13), pages 1-30, June.
    3. Muhammad Abid & Neil Hewitt & Ming-Jun Huang & Christopher Wilson & Donal Cotter, 2021. "Domestic Retrofit Assessment of the Heat Pump System Considering the Impact of Heat Supply Temperature and Operating Mode of Control—A Case Study," Sustainability, MDPI, vol. 13(19), pages 1-26, September.
    4. Famoso, F. & Prestipino, M. & Brusca, S. & Galvagno, A., 2020. "Designing sustainable bioenergy from residual biomass: Site allocation criteria and energy/exergy performance indicators," Applied Energy, Elsevier, vol. 274(C).
    5. Olaia Eguiarte & Antonio Garrido-Marijuán & Pablo de Agustín-Camacho & Luis del Portillo & Ander Romero-Amorrortu, 2020. "Energy, Environmental and Economic Analysis of Air-to-Air Heat Pumps as an Alternative to Heating Electrification in Europe," Energies, MDPI, vol. 13(15), pages 1-18, August.
    6. Carroll, Zane & Couzo, Evan, 2021. "Should North Carolina require more efficient water heaters in homes? A cost-benefit analysis," Energy Policy, Elsevier, vol. 150(C).
    7. Salimi, Mohammad & Faramarzi, Davoud & Hosseinian, Seyed Hossein & Gharehpetian, Gevork B., 2020. "Replacement of natural gas with electricity to improve seismic service resilience: An application to domestic energy utilities in Iran," Energy, Elsevier, vol. 200(C).
    8. Sung-Hoon Seol & Ahmed A. Serageldin & Oh Kyung Kwon, 2020. "Experimental Research on a Heat Pump Applying a Ball-Circulating Type Automatic Fouling Cleaning System for Fish Farms," Energies, MDPI, vol. 13(22), pages 1-18, November.
    9. Jia, Jie & Lee, W.L. & Cheng, Yuanda & Tian, Qi, 2021. "Can reversible room air-conditioner be used for combined space and domestic hot water heating in subtropical dwellings? Techno-economic evidence from Hong Kong," Energy, Elsevier, vol. 223(C).

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