De Donato S R, Graziani M, Mainetti S
Presidio Multizonale di Prevenzione, Settore Fisico Ambientale, Azienda USL Rimini.
Med Lav. 1996 Jan-Feb;87(1):51-62.
Fanger's PMV index has been widely used in the last ten years even if it has not yet been sufficiently tested in children. Furthermore recent studies have expressed doubts on the utilization of the index in real situations. We therefore studied the applicability of the PMV index via a survey that involved school children from 8 to 11 years old. The study was conducted comparing the individual objective quantification of thermal comfort (values of PMV index) and the feeling of subjective thermal comfort of people involved (by answering a standardized questionnaire). The PMV index values within the interval +/- 0.5 were grouped in 2 degrees C operative temperature classes; the percentages of subjects who expressed thermal comfort were calculated within these groups. Considering Fanger's assumption (as foreseen by ISO 7730), the percentage of subjects in a condition of thermal discomfort could not be higher than 10% in each group. On the contrary a percentage of dissatisfied persons was obtained that was significantly higher (p < 0.01) than 10% over all the temperature values considered. The number of discrepancies, analyzed even with respect to operative temperature values, was so high that it could not be attributed to the thermal variation that can be measured in the classrooms. Variations due to differences in the thermal resistance of clothing can be excluded since this was taken into consideration individually during the elaboration of the index.
在过去十年里，范格的预测平均投票（PMV）指标得到了广泛应用，即便它在儿童群体中尚未得到充分测试。此外，近期研究对该指标在实际情况下的应用表示怀疑。因此，我们通过一项针对8至11岁学童的调查研究了PMV指标的适用性。该研究通过比较个体热舒适度的客观量化值（PMV指标值）和相关人员的主观热舒适感受（通过回答一份标准化问卷）来进行。将PMV指标值在±0.5区间内的情况按照2摄氏度的操作温度等级进行分组；计算这些组内表示热舒适的受试者百分比。按照范格的假设（如ISO 7730所预见），每组中处于热不适状态的受试者百分比不应高于10%。相反，在所考虑的所有温度值范围内，获得的不满意人员百分比显著高于10%（p < 0.01）。即使对操作温度值进行分析，差异数量也非常高，以至于不能将其归因于教室中可测量的热变化。由于在指标制定过程中已单独考虑了服装热阻差异导致的变化，所以可以排除这一因素。
