Wang Faming, Lai Dandan, Shi Wen, Fu Ming
Institute of Textiles and Clothing, ST706, ITC, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong.
Laboratory for Clothing Physiology and Ergonomics (LCPE), Soochow University, China.
J Therm Biol. 2017 Dec;70(Pt A):69-76. doi: 10.1016/j.jtherbio.2017.03.004. Epub 2017 Mar 18.
Currently, no published standard and research work have addressed the basic requirements on knitted fabric 'skin' on sweating manikins. In this study, we performed 252 experiments to investigate the influence of fabric thickness and material on the apparent 'wet' conductive (or effective) thermal resistance of the fabric 'skin' using a 'Newton' manikin. Four types of cotton fabric 'skin' (fabric thickness: 0.38, 0.54, 0.92 and 1.43mm) and three types of polyester fabric 'skin' (fabric thickness: 0.41, 0.54 and 1.0mm) were selected and their 'wet' conductive thermal resistance was determined. Empirical equations were also developed for each fabric 'skin' to predict wet fabric 'skin' surface temperatures. It was found that both fabric thickness and material significantly affected the apparent 'wet' conductive thermal resistance. Clothing total evaporative resistance determined using thin fabric 'skin' (e.g., CO1, CO2) was normally lower than that determined using thick fabric 'skin' (e.g., CO4). Besides, synthetic fabric 'skin' tended to have a larger apparent 'wet' conductive thermal resistance than the cotton fabric 'skin' due to a smaller amount of moisture contained. Hence, there is a great need to standardize the fabric 'skin' to eliminate the influence of fabric 'skin' on the measurement of clothing evaporative resistance by means of a sweating manikin.
目前，尚无已发表的标准和研究工作涉及出汗人体模型上针织面料“皮肤”的基本要求。在本研究中，我们使用“牛顿”人体模型进行了252次实验，以研究织物厚度和材料对织物“皮肤”表观“湿”传导（或有效）热阻的影响。选择了四种类型的棉质织物“皮肤”（织物厚度：0.38、0.54、0.92和1.43毫米）和三种类型的聚酯织物“皮肤”（织物厚度：0.41、0.54和1.0毫米），并测定了它们的“湿”传导热阻。还为每种织物“皮肤”建立了经验方程，以预测湿织物“皮肤”的表面温度。结果发现，织物厚度和材料均对表观“湿”传导热阻有显著影响。使用薄织物“皮肤”（例如CO1、CO2）测定的服装总蒸发阻力通常低于使用厚织物“皮肤”（例如CO4）测定的结果。此外，由于含湿量较少，合成织物“皮肤”的表观“湿”传导热阻往往比棉质织物“皮肤”更大。因此，迫切需要规范织物“皮肤”，以消除织物“皮肤”对出汗人体模型测量服装蒸发阻力的影响。
