Analysis of operation performance of three indirect expansion solar assisted air source heat pumps for domestic heating

Yang, Li Wei, Hua, Nan, Pu, Jin Huan, Xia, Yu, Zhou, Wen Bin, Xu, Rong Ji, Yang, Tong ORCID logoORCID: https://orcid.org/0000-0002-1254-5628, Belyayev, Yerzhan and Wang, Hua Sheng (2022) Analysis of operation performance of three indirect expansion solar assisted air source heat pumps for domestic heating. Energy Conversion and Management, 252 , 115061. pp. 1-19. ISSN 0196-8904 [Article] (doi:10.1016/j.enconman.2021.115061)

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Abstract

To achieve the goal set for net-zero emissions of greenhouse gases in the UK by 2050, the domestic heating must be decarbonised. Solar assisted air source heat pumps, integrating solar collector, thermal energy storage tank and heat pump, offers a promising alternative application under the UK weather conditions. Literature review shows that investigations of solar assisted air source heat pumps in the regions like the UK are still insufficient. The serial, parallel and dual-source indirect expansion solar assisted air source heat pumps are modelled and simulated under the weather conditions in London using TRNSYS to investigate the operation performance over a typical year. These three heat pumps are applied to provide space heating and hot water of 300 L per day for a typical single-family house. The simulation results show comparisons of the three systems. The serial type heat pump shows the highest seasonal performance factor of 5.5, but requiring the largest sizes of the solar collector and thermal energy storage tank. The dual-source and parallel type heat pumps show slightly lower seasonal performance factors of 4.4 and 4.5, respectively, requiring smaller sizes of solar collector and thermal energy storage tank. Furthermore, the results show that the air source part contributes to an important proportion of the heat provision and stable operation of the systems. The yearly seasonal performance factor higher than 4.4 achievable by the three heat pumps suggests that they are potentially applied in the regions with relatively lower solar irradiance. The economic analyses indicate that the parallel and dual-source type heat pumps provide good alternatives to replacing the gas-boiler heating system.

Item Type: Article
Keywords (uncontrolled): Solar assisted air source heat pump, seasonal performance factor, domestic heating, solar thermal energy, numerical simulation
Research Areas: A. > School of Science and Technology
Item ID: 34451
Notes on copyright: © 2021. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/
Useful Links:
Depositing User: Tong Yang
Date Deposited: 06 Jan 2022 09:50
Last Modified: 08 Jun 2022 16:55
URI: https://eprints.mdx.ac.uk/id/eprint/34451

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