Synthetic Evaluation Index of Indoor Environment - and Optimal Control Method on it

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It is necessary for optimal control of indoor environment to define the quality of indoor environment and to introduce the aspect of energy saving.Present project was planned on the following three themes;1. To produce a synthetic index to evaluate indoor environment for occupants.2. To find the most efficient air-conditioning method to prevent from mixing energy loss, and3. To establish a model to predict temperature and velocity distributions of room air.The following results were obtained during subsidized three years.1. The hue-heat hypothesis was confirmed in transitional conditions such as warming up process from cold to comfortable zone.2. On physiological responses in transitional conditions, aftereffects of mean skin temperature and heart rate revealed themselves in warming up process and cooling down process, respectively.3. A new model that accounted for ambient, physiological conditions, and sensation in transitional conditions on two-dimensional plane was proposed.4. Hue-heat impression of ambient wall color also varied with ambient thermal condition through the experiments using scaled model and slide projection. Some sensitive colors and SD scales were recognized.5. Mixing energy loss was examined in Air-conditioning Experimental Chamber. It was quantitatively clarified that the difference of setting temperatures between a cooled interior and a heated perimeter zone greatly affected the mixing energy loss.6. The importance of mixing energy loss on energy saving was verified as a result of simulation of a model building.7. A mixing model that enabled to simulate vertical distribution of room air temperature was proposed and air distribution systems were evaluated using various indices.8. Numerical calculations of temperature and velocity distributions of room air were carried out by means of various kinds of numerical methods with fairly good results.