Evaluation of Energy Consumption in Thermal Storage Systems and Development of Planning and Designing Tool for Thermal Storage System

本研究针对建筑物之热环境与节能问题，探讨蓄热式空调系统之设计与应用，并为蓄热式空调系统之规划与设计提供基础性研究。(1)对某办公楼夏季大温差蓄热系统的性能进行了评价。由于提高了存储效率，该系统对于能源公用事业是有效的。(2)通过对一个采用地板蓄热系统的建筑物的现场测试，该系统不仅可以降低用户的能源成本，而且可以降低公用事业公司的空调负荷峰值。此外，还通过实验证实了夜间吹扫对中间季节冷负荷的降低效果。(3)对某老厂房内的地板蓄热系统进行了热环境和能耗测试。该系统通过利用夜间折扣电价降低运行成本，地板表面辐射有助于保持空间热舒适性。(4)通过一系列的仿真研究，阐明了蓄热系统的可用性，并为系统的优化控制提供了一个基本方向。模拟的对象是储水罐系统、冰蓄冷罐系统和具有容器型相变材料的蓄冷罐。此外，为开发计算机辅助设计工具，还对储水箱系统和地板蓄热系统进行了基础研究。

In this research, air-conditioning systems with thermal storage were investigated in regard to energy conservation and thermal environment in buildings and a fundamental study was carried out to develop a planning and designing tolls for air-conditioning systems with thermal storage.(1) Performance of the large temperature differential thermal storage system in an office building was evaluated in summer. This system is effective for energy utilities by reason that the storage efficiency is raised.(2) According to the field measurement in a building with the floor thermal storage system, this system enables not only user to reduce their energy costs, but utilities to reduce peaks of air-conditional load. In addition, an effect of night purge on reducing cooling load in intermediate season was confirmed experimentally.(3) Thermal environment and energy consumption of latent floor-heating storage system were measured in an aged facility. The system reduces running cost by utilization of night time discount power rate and the radiation from the floor surface contributes to maintaining space thermal comfort for occupants.(4) A series of simulations were carried out to clarify the availability of the thermal storage systems and to obtain a basic direction for optimal control of the systems. Subjects of the simulations were a water storage tank system, an ice thermal storage tank system and a storage tank with phase change materials of a container type. In addition, a fundamental study for a water storage tank system and floor thermal storage system was carried out to develop CAD tolls.