The clothing insulation is an important factor in the adaptation to thermal environment for occupants. With the exception of certain types of clothing, occupants' clothing is divided into upper and lower body, and it is important to focus the analysis on clothing of upper and lower body. The objective of this study was to determine the effect of the clothing insulation distribution between the upper and lower body in a cold environment. In this study, the analysis was carried out using field surveys and simulations. In the simulation, the sensible heat loss from the human body was analyzed using the JOS-2 model. A thermal environment survey and a subjective vote survey were conducted from October 2019 to January 2020 at a university in Nagano City, Nagano Prefecture, Japan. Nagano City is characterized by a humid subtropical climate (Cfa) according to the Köppen climate classification. During the survey period, the mean outdoor air temperature was 9.6 °C and the mean indoor operative temperature was 20.8 °C. The survey revealed that the occupants adjusted the clothing insulation for the total body by adjusting the clothing insulation for the upper body to the thermal environment. The simulation demonstrated that the sensible heat loss and mean skin temperature of the upper and lower body differed between the conditions in which the total body clothing insulation was uniformly distributed and those in which it was not.

服装隔热是居住者适应热环境的重要因素。除某些类型的服装外，乘员的服装分为上身和下身，重点分析上身和下身的服装是很重要的。本研究的目的是确定在寒冷环境中上身和下身之间的服装隔热分布的影响。在这项研究中，分析是通过实地调查和模拟进行的。在模拟中，使用 JOS-2 模型分析了人体的显热损失。2019 年 10 月至 2020 年 1 月在日本长野县长野市的一所大学进行了热环境调查和主观投票调查。根据柯本气候分类，长野市以亚热带湿润气候（Cfa）为特征。调查期间，室外平均气温为9.6°C，室内操作平均温度为20.8°C。调查显示，乘员通过调整上半身的服装隔热来适应热环境，从而调整全身的服装隔热。模拟表明，全身服装隔热层均匀分布的情况和不均匀分布的情况下，上身和下身的显热损失和平均皮肤温度不同。调查显示，乘员通过调整上半身的服装隔热来适应热环境，从而调整全身的服装隔热。模拟表明，全身服装隔热层均匀分布的情况和不均匀分布的情况下，上身和下身的显热损失和平均皮肤温度不同。调查显示，乘员通过调整上半身的服装隔热来适应热环境，从而调整全身的服装隔热。模拟表明，全身服装隔热层均匀分布的情况和不均匀分布的情况下，上身和下身的显热损失和平均皮肤温度不同。