夏季局部送风非均匀热环境下人体热舒适研究
Thermal comfort study on non-uniform thermal environment with local ventilation in summer
摘要：
采用受试者主观实验的方法，分析了头部、前胸、后背、胳膊、手、腿和脚部单独进行局部送风冷刺激条件下，对整体和非刺激部位热感觉的影响，发现各部位热感觉之间存在多重共线性，采用主成分回归的方法分析了各部位对整体热感觉的影响。探讨了非均匀环境下整体热可接受度与整体热舒适及局部热可接受度之间的关系。结果表明，肢体末端的局部刺激仅能对其周围部位产生明显影响，对其他部位影响不大；躯干部位局部刺激能影响全身各个部位，从而导致身体热感觉的区域化差异；整体热舒适和整体热可接受度密切相关，局部热不可接受度在一定范围内时，不会影响整体热舒适性。
Abstract：
By the method of subjective experiment on subjects, analyses the influences of cool stimulation by local ventilation on the thermal sensations of both the whole body and the other non stimulated body parts, when the stimulation is acted on head, chest, back, arm, hand, leg and foot, separately. Finds the multicollinearity among the thermal sensations of different body parts. Studies the influence of different body parts on the thermal sensations of the whole body by the principal component regression method. Explores the relationship between overall thermal acceptability, overall thermal comfort and local thermal acceptability in non-uniform environments. The results show that the local stimulation on the body extremities only has obvious effect on the surrounding parts, and has insignificant effect on other body parts. The local stimulation on trunk body parts has great effect on the overall thermal sensation , which induces the difference of thermal sensation among different body parts. There is good relationship between overall thermal comfort and overall thermal acceptability. When the thermal unacceptablity of local body part is within a certain range, it will not affect the overall thermal comfort.
Keywords:non-uniform thermal environment, local ventilation, thermal comfort, thermal sensation, thermal acceptability, principal component regression