冷热双蓄空调系统蓄能量优化分析
Optimization of combined cooling and heating energy storage capacity in air conditioning systems
摘要：
在新型电力系统与“双碳”目标驱动下,冷热双蓄空调系统具有重要的应用价值。针对冷热双蓄系统优化的难点,本研究提出了一种蓄能装置容量优化方法——基于全生命周期费用模型构建冷热蓄能容量双变量优化算法,并以夏热冬冷地区某办公建筑水蓄能系统为案例进行了分析。研究表明:本案例新建冷热双蓄系统的设计蓄冷率在26%～36%区间具有较好的经济性;同时应关注供热工况下合理利用蓄能装置容量,避免因追求蓄能装置最大化利用而导致系统经济性降低;优化配置下,系统在供冷季与供热季可分别实现58%与91%的高峰电力负荷转移,全年运行费用降低35%。
Abstract：
Under the drive of the new power system and the “dual-carbon” goal,the combined cooling and heating energy storage air conditioning system demonstrates significant application value.Addressing the optimization challenges of the system,this study proposes an energy storage capacity optimization method that develops a dual-variable optimization algorithm based on a whole life cycle cost model,with a case analysis of water energy storage system of an office building located in the hot summer and cold winter zone.The research indicates that the newly designed combined cooling and heating energy storage system shows optimal economic performance when maintaining a cooling storage ratio within the range of 26% to 36%.Simultaneously,it emphasizes the importance of rational utilization of energy storage capacity under heating conditions to avoid economic efficiency reduction caused by excessive pursuit of storage device maximization.Under the optimized configuration,the system can achieve 58% and 91% of the peak power load shifting during cooling and heating seasons,respectively,with annual operating costs reduced by 35%.
Keywords:combined cooling and heating energy storage; energy storage capacity; comprehensive electrification; flexible regulation; whole life cycle cost