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Experimental assessment of convective and radiative heat transfer coefficients for various clothing ensembles
International Journal of Biometeorology ( IF 3.0 ) Pub Date : 2021-05-17 , DOI: 10.1007/s00484-021-02138-5
Shan Gao 1 , Ryozo Ooka 2 , Wonseok Oh 2
Affiliation  

The convective and radiative heat transfer coefficients of clothing are important parameters for human thermoregulation and comfort models. Many researchers have studied convective and radiative heat transfer coefficients of the naked human body. However, there is limited information on convective and radiative heat transfer coefficients for the clothed human body. Therefore, this study aims to confirm whether the convective and radiative heat transfer coefficients vary with different clothing ensembles in addition to clarifying how the difference in clothing heat transfer coefficients affects the prediction of thermal comfort index, such as the predicted mean vote (PMV) index. The convective and radiative heat transfer coefficients for eight sets of clothing ensembles were measured through a manikin experiment. The results demonstrated that (1) the largest difference between convective heat transfer coefficients for various clothing ensembles was 32%, and (2) PMV values differed between the clothing ensembles with the largest value being approximately 0.2, which corresponds nearly 1 °C change in the indoor temperature. Therefore, it is necessary to consider the actual clothing convective heat transfer coefficient for the precise prediction of thermal comfort.



中文翻译:

各种服装套装的对流和辐射传热系数的实验评估

服装的对流和辐射传热系数是人体体温调节和舒适模型的重要参数。许多研究人员研究了裸体的对流和辐射传热系数。然而,关于穿着衣服的人体的对流和辐射传热系数的信息有限。因此,本研究旨在确认对流和辐射传热系数是否随不同的服装合奏而变化,同时阐明服装传热系数的差异如何影响热舒适指数的预测,例如预测平均投票(PMV)指数. 通过人体模型实验测量了八套服装套装的对流和辐射传热系数。结果表明:(1) 各种服装组合的对流传热系数之间的最大差异为 32%;(2) 服装组合之间的 PMV 值不同,最大值约为 0.2,对应于近 1°C 的变化。室内温度。因此,为了精确预测热舒适性,需要考虑实际的服装对流传热系数。

更新日期:2021-05-17
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