Analysis and evaluation of space cooling systems using weather conditions and building fabric thermal performance

为了制定舒适和有效的空间冷却系统的设计和评价方法，从2002年到2004年，进行了一系列研究。考虑到日本的天气条件，空间供冷系统比空间供暖更重要，尤其是在大型建筑中。虽然建筑围护结构的保温已经有效地降低了采暖能耗，但在采暖系统的供暖降温方面，并没有与保温相对应的单一的节能方法。因此，由多种节能降温技术组成的综合系统有望为制冷降耗做出贡献。为此，采用模拟和实验相结合的方法，研究了基于创新围护结构系统的综合供冷系统的设计思路、新风供冷潜力的利用以及空调系统的智能控制方法。-系统模拟在综合冷却系统设计和评价中的应用--利用室外空气冷却潜力进行冷却系统--创新窗户系统的热和日光控制性能--使用等温气流进行个人制冷控制的任务和环境冷却系统--使用建筑织物热容的空调系统--空调系统最佳设计和运行的评价--通过使用试验室和现有建筑物进行的理论和实验研究对上述课题进行了评价。虽然这项研究的结果将有助于设计节能制冷系统，但仍有必要对开发适合日本气候条件的节能综合制冷系统的创新想法进行持续研究。

In order to develop design and evaluation methods for comfortable and effective space cooling systems a series of studies was carried out for three years, from 2002 to 2004. When considering the weather conditions of Japan, the space cooling system is more important comparing to the space heating especially in the large buildings. Whereas the thermal insulated building envelopes have been efficiently contributed to reduce the energy consumption for space heating, for the cooling there is not single mighty energy reduction method corresponding to the thermal insulation in the space heating system. Therefore, integrated systems composed of several energy efficient cooling technologies are expected to contribute the energy reduction in the cooling. For this purpose, the ideas for the integrated cooling systems based on the innovative building envelop systems, the use of outdoor air cooling potential and the smart control ways of air-conditioning systems were studied using both the simulation method and experimental method. The followings are the major specific topics carried out in this study.- Application of the system simulation for the design and evaluation of integrated cooling systems- Use of outdoor air cooling potential for cooling system- Thermal and daylight control performance of innovative window systems- Task and environment cooling system using isothermal air flow for personal cooling control- Air-conditioning systems using heat capacity of building fabric- Evaluation for optimum design and operation of air-conditioning systemsThe above topics were evaluated by the theoretical and experimental studies using the test rooms as well as the existing buildings. While the results of this study will contribute to design the energy efficient cooling systems, the continuous studies on evaluating the innovative ideas for developing energy efficient integrated cooling systems suitable for the Japanese climatic conditions are necessary.