北方严寒地区农村住宅电供暖系统蓄热水箱仿真优化及经济性分析
Simulation optimization and economic analysis of thermal storage tanks for rural residence electric heating systems in northern severe cold zone
摘要：
为充分利用峰谷分时电价,本文通过对内蒙古包头地区典型户用建筑不同蓄热水箱体积情景下的电锅炉蓄热供暖系统峰谷时段运行耗电量进行TRNSYS仿真模拟,对其初投资、年运行费用等综合经济指标进行对比分析,确定最优的蓄热水箱体积。通过对比分析可知,针对北方严寒地区而言,60、96、120 m2农村住宅,最优水箱体积分别为1.0、2.0、2.5 m3,其简单投资回收期最短;对于建筑面积大于96 m2的住宅,建议1 m2建筑面积配置蓄热水箱体积约为0.021 m3。研究结果可供严寒地区电锅炉蓄热供暖系统精细化设计参考。
Abstract：
To maximize the benefits of time-of-use electricity pricing, this study conducts TRNSYS simulations on electric boiler thermal storage heating systems under different thermal storage tank volumes for typical residential buildings in Baotou, Inner Mongolia. Comparative analysis of comprehensive economic indicators including initial investment and annual operating costs identifies the optimal thermal storage tank volumes. The results show that for 60 m2, 96 m2, and 120 m2rural residences in northern severe cold zone, the optimal tank volumes are 1.0 m3, 2.0 m3, and 2.5 m3, respectively, demonstrating the shortest simple payback periods. For the buildings exceeding 96 m2, a configuration of approximately 0.021 m3thermal storage tank volume per square meter of floor area is recommended. These findings provide valuable references for the optimized design of electric boiler thermal storage heating systems in severe cold zone.
Keywords:heating; TRNSYS; off-peak electrical thermal storage; thermal storage tank volume; rural residence; economic analysis; severe cold zone