空气源热泵辐射供暖系统围护结构的蓄热研究

Research on Heat Storage of Palisade Structure of Air Source Heat Pump Radiant Heating System

以北方地区40.5 m^(2)农宅为研究对象,通过TRNSYS软件搭建空气源热泵辐射供暖系统的仿真模型。利用忻州峰谷电价特点,在谷时段利用地板、墙体等蓄热体进行蓄热。在保证室温的前提下,通过TRNSYS模拟供暖系统,对比分析系统在不同谷时段运行方案下的变化特点,以年运行费用最低为目标,找到谷电电价期间的最优蓄热温度及最优蓄热时间,获得最优的蓄热运行策略。相比无蓄热运行策略,最优蓄热运行策略可节省年运行费用14.2%,提高采暖季供热量716 kW·h,满足房间舒适性要求。

Taking the 40.5 m^(2) farm house in the northern area as research object,the simulation model of air source heat pump radiant heating system was built by TRNSYS software,and the floor,wall and other regenerators were used to store heat during the valley period by making use of the characteristics of Xinzhou peak and valley electricity price.Under the premise of ensuring the room temperature,through TRNSYS simulation heating system,the change characteristics of the system under different operation schemes in valley period were compared and analyzed.With the goal of the lowest annual operating cost,the optimal heat storage temperature and time during the valley electricity price period were found,and the optimal heat storage operation strategy was obtained.Compared with the non-heat storage operation strategy,under this strategy,the annual operation cost can be saved by 14.2%,the heat supply 716 kW·h in the heating season can be increased,and the room comfort require-ments can be met.