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Date of Publication:2014-01-01

Journal:制冷技术

Issue:1

Page Number:12-17

Abstract:Low temperature hot water floor radiant heating has advantages of being comfortable and saving energy and space. The air source heat pump is believed to be an ideal heat source of the low temperature hot water floor radiant heating system because of its high-efficiency, stability and good matching with the floor radiant heating system. The combination of air source heat pump and floor radiant heating system may make full use of the heat storage capacity of the enclosure and each structural layer of the floor, which reduces the influence of environment temperature changes on the heating performance of the air source heat pump. In this paper, a transient simulation model of low temperature hot water floor radiant heating system with an air source heat pump for a high-rise building was developed by using TRNSYS and EES software, and it has a good agreement with the reported experimental data. Peak and off-peak intermittent running control strategy was presented here based on the heat storage properties, which can improve the heating efficiency through avoiding bad working conditions of the air source heat pump. By comparing the heating room temperature and operation cost of two kinds of operation modes, i.e., peak and off-peak intermittent operation and off-peak running, the former is better than the latter.

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