(3) The permissible exposure duration according to the class of simplified weather classification based on the cloud amount in each region and in each month. (2) The relation between the permissible exposure duration and the global solar radiation. Through analysis of the permissible exposure duration, the followings were shown : (1) The level of the permissible exposure duration in every month at 5 observation points. The purpose of this study is to present analyzed results of the permissible exposure duration for exposure to the solar UV radiation at Sapporo, Kanazawa, Tsukuba, Kagoshima and Naha, and to discuss the regional characteristics from the viewpoint of the UV radiation exposure. Increase of the UV radiation will have an influence on the human health. Today, the ozone depletion in the stratosphere is recognized as a major enviromnental problem, because which results in a significant increase in solar ultraviolet (UV) radiation that reaches the surface of the Earth. The CFC utilized as a refrigerant of air conditioner causes the ozone layer depletion. The peak can be cut down 20 to 70% of which reduction relies on the height of a room considered or W/H of the building. However, when you look at the peak Solar Heat Gain of east walls before noon or west walls aftemoon during summer, it becomes significant. When you concem on only the peak Solar Heat Gain of south oriented walls during summer, the influence coming from surroundings can be negligible. And due to the multi-iterative reflection within the building canopy, the large reflectance of walls or roads means the increase of Solar Heat Gain immediately. These deemed to be appropriate to draw following conclusions, - Calmative solar radiation into a window during a day decreases, if the building's W/H becomes small, or if you concem on the lower stories of the building. As one of the most admirable results, a set of the Tables for Factorial Effects by the Theory of Design of Experiment was obtained, in which parameters relating to urban and architectural designs were picked up plausibly and rationally. A systematic numerical experiment that stands on the proposed model did lead several practical results. 3.The vertical temperature difference of living room in winter season is small in the detached houses which have high of airtightness performance and shelter performance, and is small in the Detached Houses which is installed floor heater.Ī numerical model that deals with 3-dimenational radiative thermal exchanges within an arbitary block area in typical urban situation including surrounding buildings and roads, was established in order to identify the influence of reflection from surroundings on a building's Solar Heat Gain. 2.Coefficient of heat loss of detached houses which fulfills the standard of new energy saving of Niigata prefecture is about 40% in the whole. And the temperature of living room is higher than the outdoor temperature about 1-3 degrees.It is not concerned with an outer temperature but, as for living room temperature, many detached houses are in the range of 16-24 degrees in winter. 1.The living rooms temperature in summer season are in the range of 24-31 degrees in almost all Detached Houses. The outline of the results are as follows. The purpose of this research is performing the survey of an indoor thermal environment, Shelter performance, lifestyle, the amount of energy consumption in Detached Houses of Niigata Prefecture.This paper reports the result of a questionnaire and a survey as part 1.
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