清洁能源热泵供热系统管网储能及其经济性分析
Energy storage and economic analysis of a clean energy heat pump heating system pipe network
摘要：
提出了一种基于供热质量-流量调节的管网储能方案,该方案通过提升一次网内水的平均温度进行储能,同时监测二次网侧取热量,通过调控二次网流量来维持末端供水温度相对稳定,并给出了其运行工况,研究了其控制方案。以实际项目为例,探讨了该方案的能耗特点和储能特点,并进一步分析了其运行经济性。研究表明,末端按照最大设计散热量的70%考虑时,管网可储能温差达18.69 ℃,可完全错峰运行6.08 h,节省运行成本15.8%。管网储能具有很高的经济效益和节能性,是清洁能源热泵供热系统未来发展的一个重要方向。
Abstract：
A thermal quality-flow regulation based pipe network energy storage scheme is proposed, which achieves energy storage by improving the average water temperature in the primary network. Meanwhile, the heat extraction from the secondary network side is monitored, and the secondary network flow rate is regulated to maintain relatively stable terminal water supply temperature. The operational conditions are specified, and the control strategy is investigated. Taking an actual project as an example, the energy consumption characteristics and energy storage features of this scheme are discussed, with further analysis on its operational economy. The study shows that when considering 70% of the maximum designed heat dissipation capacity at terminal units, the achievable temperature difference for network energy storage reaches 18.69 ℃, enabling complete off-peak operation for 6.08 hours and yielding 15.8% operational cost savings. The pipe network energy storage demonstrates high economic benefits and energy efficiency, representing a significant development direction for clean energy heat pump heating systems in the future.
Keywords:clean energy; pipe network energy storage; heating; heat pump; peak-cutting and valley-filling; system form; energy consumption analysis; economic analysis