吸附式储热空间供暖系统的动态仿真与性能分析

Dynamic Simulation and Performance Analysis of Adsorption Thermal Storages for Space Heating

中文关键词: 热能储存  水基吸附剂  复合吸附剂  TRNSYS  供暖系统

英文关键词: thermal storage  water-based adsorbent  composite adsorbent  trnsys  heating system

中文摘要:

      为了研究以复合水基吸附剂为储热介质的吸附式储热设备在冬季供暖中的性能，在TRNSYS 18建立了符合上海市节能建筑标准的三层办公建筑暂态系统仿真模型，集成了热泵与太阳能集热器，吸附式储热设备或水箱的供暖系统仿真模型。通过仿真得到了上海办公建筑在11月到3月期间的供暖需求，吸附式储热设备和水箱在不同供暖设备的配置下供暖时的仿真数据。仿真结果表明，吸附式储热设备“削峰填谷”的作用更明显，供暖设备功率越小，吸附式储热设备储热效果越好。吸附式储热设备与太阳能集热器联合供暖效果好于水箱。吸附式储热设备供暖系统利用太阳能供暖的比例更高，热泵耗电量可以减少21.29%~31.37%，谷时耗电最高增加49.97%，可以进行跨季度热能储存。研究结果可以为吸附式储热设备用于建筑供暖提供理论支持。

英文摘要:

      To investigate the performance of an adsorption heat storage device using a composite water-based ad-sorbent as a thermal storage medium for winter heating, a simulation model was developed using TRN-SYS 18. This model was designed to simulate a three-story office building in accordance with Shanghai's energy-saving building standards. The simulated heating system included a heat pump, solar collector, an adsorption heat storage device and water tank. The heating demand of the office building in Shanghai from November to March was determined through simulation, providing simulated data on the heating performance of the adsorption thermal storage device and water tank under different heating configurations. Simulation results indicated that the adsorption thermal storage device demonstrated significant peak-shaving capabilities. The smaller the power of the heating equipment, the better the thermal storage effect of adsorption based thermal storage equipment. Combining the adsorption thermal storage device with solar collectors resulted in superior heating effectiveness compared to using a water tank alone. Furthermore, the simulations showed that the adsorption thermal storage system utilizing solar energy for heating had a higher proportion of solar energy utilization, enabling a 21.29%-31.37% reduction in heat pump electricity consumption while potentially increasing off-peak power demand by up to 49.97%, facilitating seasonal thermal energy storage. Overall, the study results provide theoretical support for the application of adsorption thermal storage devices in building heating systems.