严寒地区空气源热泵复合低谷电蓄能供暖系统优化

The optimization of air-source heat pump heating system combined with energy storage of off-peak electricity in cold areas

针对严寒地区的气候特点,提出了空气源热泵复合低谷电蓄能供暖系统,以最短的初投资回收期为研究目标,建立了该供暖系统的数学模型。利用该数学模型对两种不同控制策略下吉林省长春市某高速公路服务区供暖系统的相关参数进行分析。分析结果表明:两种控制策略均存在最短初投资回收期,其中,经济性最优控制策略下的最短初投资回收期为2.49 a,节能性最优控制策略下的最短初投资回收期为2.3 a;供暖系统的初投资回收期与热泵的停机温度有关,热泵的停机温度越低,供暖系统的初投资回收期越短。

According to the climate characteristics of cold area in China, the air-source heat pump system(ASHP) combined with energy storage of off-peak electricity was introduced. The mathematical model was set up to optimize system design based on minimum initial investment payback period. The relevant parameters of a heating system was analyzed in a highway service area in Changchun City, Jilin Province under two different control strategies by using the mathematical model. The analysis results show that there is an optimal payback period for both control strategies. The optimal payback period for economic optimal control strategy is 2.49 a and that for energy-saving optimal control strategy is 2.3 a. The initial investment payback period of the system is related to the heat pump shutdown temperature. When the shutdown temperature of the heat pump is lower, the initial investment payback period of the heating system is shorter.