 Research on working characteristics of composite two-stage ventilation heat recovery system with heat pipe and heat pumpShuxue Xu, Jianhui Niu, Guoyuan Ma and Junfeng Wu Energy, 2024, vol. 304, issue C Abstract: In this paper, a composite two-stage ventilation heat recovery system with heat pipe and heat pump is proposed, heat pipe is used to recover the exhaust air energy to improve the operating performance of the system under all operating conditions. The split heat pipe heat exchanger is designed and manufactured, the working characteristics and performance of the composite heat recovery system under different working conditions are tested, and it is compared with the parallel-loop heat pump ventilation heat recovery system also. The results show that the optimal working fluid charge rate of the split heat pipe used in the composite system is 50 %–60 %, the temperature efficiency of the composite system in winter is higher than 64.31 %, the heating COP is up to 7.17, and the total heating capacity is 5.09 kW. Temperature efficiency and heating capacity of the system are 4.01 %–66.6 % and 7.68 %–67.19 % higher than that of the double loop heat pump heat recovery system, respectively. Keywords: Heat recovery; Heat pump; Heat pipe; COP; Temperature efficiency (search for similar items in EconPapers) Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:304:y:2024:i:c:s0360544224019042 DOI: 10.1016/j.energy.2024.132130 Access Statistics for this article Energy is currently edited by Henrik Lund and Mark J. Kaiser More articles in Energy from Elsevier |
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