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An exploration on the applicability of heating tower heat pump and air source heat pump systems in different climatic regions

Liu, M; Jiang, L; Zhang, H; Zheng, X; You, S; Wei, S; (2019) An exploration on the applicability of heating tower heat pump and air source heat pump systems in different climatic regions. Journal of Cleaner Production , 238 , Article 117889. 10.1016/j.jclepro.2019.117889. Green open access

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Abstract

Air source heat pump (ASHP) and heating tower heat pump (HTHP) systems are both environmentally sustainable space heating systems. HTHP system can effectively avoid the frosting issue of ASHP systems, but requires higher initial investment. In order to explore the applicability of the two systems, this paper presents a comparative study between HTHP and ASHP systems in different climatic regions. Mathematical models were developed for HTHP and ASHP systems and validated by field experiments. Case studies were carried out in four different climatic regions using the numerical model to analyze the energy consumption, system efficiency and economic efficiency of the two systems. The results showed that the ASHP system was superior in electrical power input in the four regions. The EER of the HTHP system was higher than that of the ASHP system by 3% and 2% in Regions III and II (Xi'an and Shanghai) while lower by 7% and 6% in Regions I and IV (Shenyang and Chongqing). The annual cost of the HTHP system was higher than that of ASHP system by 9% and 11% in Regions I and IV, while lower by 5% and 4% in Regions II and III. Based on these comparisons, recommendations about how to choose HTHP and ASHP systems for different climatic regions were presented, to instruct future optimization and utilization of HTHP and ASHP systems.

Type: Article
Title: An exploration on the applicability of heating tower heat pump and air source heat pump systems in different climatic regions
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.jclepro.2019.117889
Publisher version: https://doi.org/10.1016/j.jclepro.2019.117889
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Heating tower heat pump; Air source heat pump; Cleaner energy; Heat and mass transfer; Energy efficiency; Climatic regions
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of the Built Environment
URI: https://discovery.ucl.ac.uk/id/eprint/10080029
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