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

为了开发舒适和有效的空间冷却系统的设计和评估方法，从2002年到2004年进行了一系列研究。当考虑到日本的天气条件时，空间冷却系统比空间供暖更重要，特别是在大型建筑中。保温建筑围护结构有效地降低了空间采暖的能耗，但在空间采暖系统中，没有一种与保温相对应的有效节能方法。因此，由几种节能冷却技术组成的综合系统有望在冷却中减少能源。为此，采用仿真和实验相结合的方法，对基于创新建筑围护结构的综合制冷系统思路、室外空气冷却潜力的利用以及空调系统的智能控制方式进行了研究。以下是本研究的主要具体课题。-系统模拟在综合冷却系统设计和评估中的应用-在冷却系统中使用室外空气冷却潜力-创新窗户系统的热和日光控制性能-在个人冷却控制中使用等温气流的任务和环境冷却系统-使用建筑织物热容量的空调系统-空调系统优化设计和运行的评估上述主题由利用试验室和现有建筑进行理论和实验研究。虽然本研究的结果将有助于设计节能冷却系统，但对开发适合日本气候条件的节能综合冷却系统的创新思路进行持续的研究是必要的。

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.