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Fundamental study on creation of a better thermal index : for the purpose of revising ISO-7730

创建更好的热指数的基础研究：以修订 ISO-7730 为目的

基本信息

批准号：
14350310
负责人：
MOCHIDA Tohru
金额：
$ 6.72万
依托单位：
HOKKAIDO UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2002
资助国家：
日本
起止时间：
2002 至 2003
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-14350310/
关键词：
ISO-7730 PMV SET^*thermal index thermal sensation thermal comfort clothing mean skin temperature 熱収支温熱生理

项目摘要

First, the authors described drawback and advantage of PMV index from ISO 7730 and SET^* from ASHRAE standards, which are two major indices of the world. And, we studied the relationship between mean skin temperature, skin wettedness and thermal sensation of the human body using heat transfer theory and thermal physiological characteristics. From experiments using subject, we proposed a new thermal index for evaluating indoor thermal environment. Second, we carried out experiments using subjects in outdoor space. We verified SET^* including solar radiation could evaluate thermal sensation of the human body in outdoor thermal environment. Additionally we established Expected. Thermal Sensation ETS as a new thermal index for evaluating outdoor thermal environment. Neutral thermal sensation and comfort sensation area of SET^* and ETS in outdoor thermal environment were determined using thermal and comfort sensation vote date. Third, we examined a method for estimating moisture absorbed by clothing using electric resistance of the clothing. We measured local heat loss from chest, upper arm and thigh with this method when subjects are exposed in hot environment in summer and winter. Consequently, increase in evaporation from the clothing surface and decrease in heat gain to the skin are observed. Finally, in order to accurately calculate convective heat exchange between the human body and the environment, convective heat transfer area is measured in standing and seated postures. Weighting factors for calculating mean shin temperature considering the convective heat transfer areas are propound for standing and seated postures. The smaller the ratio of the convective heat transfer area to total body surface area is, the greater the difference of mean skin temperature using Hardy-DuBois area is.

首先，作者描述了ISO 7730中的PMV指数和ASHRAE标准中的SET^*这两个世界主要指数的优缺点。并且，我们利用传热理论和热生理特性研究了平均皮肤温度、皮肤湿度和人体热感觉之间的关系。通过对课题的实验，我们提出了一种新的评价室内热环境的热指标。其次，我们利用室外空间的受试者进行了实验。我们验证了包括太阳辐射在内的SET^*可以评估人体在室外热环境中的热感觉。此外，我们还建立了预期。热感觉ETS作为评价室外热环境的新热指标。室外热环境中SET^*和ETS的中性热感觉和舒适感觉区域是利用热感觉和舒适感觉投票日期确定的。第三，我们研究了一种利用衣服的电阻来估计衣服吸收的水分的方法。我们用这种方法测量了受试者在夏季和冬季暴露在炎热环境中时胸部、上臂和大腿的局部热量损失。因此，观察到衣服表面的蒸发增加和皮肤吸热减少。最后，为了准确计算人体与环境之间的对流换热，测量了站立和坐姿的对流换热面积。考虑对流换热面积的计算平均胫骨温度的权重因子是针对站立和坐姿提出的。对流换热面积与身体总表面积之比越小，使用Hardy-DuBois面积计算的平均皮肤温度差异就越大。