基于峰谷电价的空气源热泵供暖系统调控策略适宜性研究
Suitability of air-source heat pump heating system regulation strategy based on peak and valley electricity price
摘要：
空气源热泵应用于北方地区供暖时受天气条件、自身性能的制约,存在制热能力弱、耗电量大的问题。而结合峰谷电价进行研究时,多数学者未考虑峰谷电价在地区间的特征差异。本文提出了一种低电费与高COP结合的运行策略,采用TRNSYS搭建了空气源热泵蓄热供暖系统仿真模型。对比分析了不同地区在相同条件下不同策略的经济性、节能性,然后基于分析结果推荐了适宜的地区运行策略。结果显示:在西安、拉萨、银川、乌鲁木齐、酒泉、都兰地区,谷电+环境温度时段的蓄热策略相比传统谷电蓄热策略,供暖期耗电量分别可减少14.2%、2.0%、15.8%、9.7%、4.6%、5.8%;相比全天启停控制蓄热策略,运行电费分别减少50.6%、6.7%、55.7%、55.2%、7.0%、30.5%。空气源热泵蓄热供暖系统结合低电费与高COP的运行策略在多数地区表现出明显优势。
Abstract：
When the air-source heat pump is used for heating in the northern region, it is restricted by weather conditions and its own performance, and there are problems of weak heating capacity and high power consumption. While combining the peak and valley electricity price, most scholars do not consider the characteristic differences of peak and valley electricity price between regions. In this paper, an operation strategy combining low electricity cost and high COP is proposed, and a simulation model of an air-source heat pump thermal storage heating system is built by TRNSYS. The economy and energy saving of different strategies in different regions under the same conditions are compared and analysed, and then the appropriate regional operation strategy is recommended based on the analysis results. The results show that in Xi’an, Lhasa, Yinchuan, Urumqi, Jiuquan, and Dulan, the thermal storage strategy of valley power and ambient temperature can reduce the electricity consumption during the heating period by 14.2%, 2.0%, 15.8%, 9.7%, 4.6% and 5.8%, respectively. Compared with the all-day start-stop control thermal storage strategy, the operating electricity costs are reduced by 50.6%, 6.7%, 55.7%, 55.2%, 7.0% and 30.5%, respectively. The air-source heat pump thermal storage heating system combined with the operation strategy of low electricity cost and high COP has shown obvious advantages in most areas.
Keywords:air-source heat pump; heating system;peak and valley electricity price; economy; coefficient of performance (COP); regulation strategy
