STUDY ON THERMAL ENVIRONMENTS AND ENERGY UTILIZATION EFFICIENCY OF A LOW ENERGY ARCHITECTURE BASED UPON DISTRIBUTED HEAT STORABE SYSTEM

在本研究期间，获得了以下结果：(1)提出相变材料（PCM）的计算模型，并将其纳入自己开发的仿真程序中。通过二维试验计算，该模型的精度是可以接受的。(2)为了提高热环境预测的精度，对模拟程序中辐射换热的计算方法进行了修改。(3)为长时间非定常模拟提供了一种有效的计算方法。应用该方法比不应用该方法节省了约70%的计算机工作量。在一个简单的室内设有Trombe墙的试验室中，假设是一个被动利用太阳辐射的系统，利用标准天气数据对分布式蓄热系统进行数值研究。(4)定量考察了PCM的影响，确定了模拟所用试验室的PCM（无机化合物）的最佳熔点。

During the present research term, following results were obtained.(1) A calculation model of PCM(phase change material) was proposed and was incorporated in a simulation code developed by us. The accuracy of the model proved to be acceptable through two dimensional test calculations.(2)The calculating procedure of the radiative heat transfer in the simulation code was modified in order to improve the accuracy of thermal environment predictions.(3)An effective calculation method was developed for long time span unsteady simulations. The computer efforts were saved about 70 % in case of applying the method compared with the cases not applying it.Using a simple test room with a Trombe wall inside it, supposing a passive utilization system of solar radiation, a distributed heat storage system was investigated numerically with a standard weather data.(4) The effect of PCM was examined quantitatively, then, optimum melting point of PCM(inorganic chemical compound) was detected for the test room used in the simulations.