Abstract Indoor solar radiation notably affects the thermal environment and the character of human heat exchange with the ambient environment. Based on the field experiments of human body thermal comfort under indoor solar radiation in winter, this paper analyzes heat exchanges between the human body and the surrounding environment and the local and overall skin temperature, and discusses the relationship between heat exchange and thermal sensation. The results show that the skin temperature of the left upper arm and left thigh under radiation is 3.3 °C and 2.0 °C higher than that without radiation. As the irradiated area increases, convection and evaporation heat loss increase, and total heat loss decreases. When the thermal sensation of the human body is in a neutral state, the proportions of heat loss by convection, radiation and evaporation are 33.9%, 47.1% and 10.4%, respectively.

中文翻译：

---

冬季太阳辐射建筑中青年人的热交换特性及热舒适性

摘要 室内太阳辐射显着影响热环境和人体与周围环境的热交换特性。本文以冬季室内太阳辐射下人体热舒适性现场实验为基础，分析人体与周围环境的热交换以及局部和整体皮肤温度，探讨热交换与热感觉的关系。结果表明，受辐射的左上臂和左大腿的皮肤温度比未受辐射的高3.3℃和2.0℃。随着照射面积的增加，对流和蒸发热损失增加，总热损失减少。当人体的热感觉处于中性状态时，对流散热的比例，