Investigation on the regulating methods of air source heat pump system used for district heating: Considering the energy loss caused by frosting and on–off
作者： Wenzhe Wei , Baoli Wang , Hao Gu , Long Ni , Yang Yao
DOI: 10.1016/J.ENBUILD.2021.110731
关键词:
摘要: Abstract Air source heat pump (ASHP) has been used in Northern China for district heating. However, few investigations on its regulating methods have conducted till now. To increase the energy-saving effect of AHSPs, a simulation model, which considered energy loss caused by frosting and on–off, was developed this paper. Based three combination modes suitable heating using ASHPs as were proposed. Then performance seven cities investigated model. Results showed that both corrections on–off evident impacts power consumption seasonal coefficient (SCOP). Owing to correction frosting, ASHP unit is increased 3.85%–17.41%, meanwhile SCOP decreased 3.72%–14.83%. The influence decreases gradually with area. In modes, changes slightly, while saving rate water can reach 80.97%–86.46%. When pitch buried pipe 300 mm, meet demand all modes.
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