Prediction of human thermal sensation based on improved PMV model

Abstract

In the traditional PMV model, the calculation of human skin temperature is only related to the level of human activity. In fact, human skin temperature is related to many factors such as evaporative heat dissipation, radiation and convective heat transfer of human skin. Therefore, it is necessary to introduce human thermal physiological model to modify the skin temperature in PMV model. In addition, considering the impact of human activities on human metabolic rate, the formula of calculating human metabolic rate obtained from Pandolf was introduced to improve the original PMV model. Finally, the model is validated and analyzed with published experimental data. The results show that the improved model can accurately predict the thermal sensation of human body under the test condition, and the predicted thermal sensation is closer to the experimental value than the original PMV model.

Developing the modified model of thermal comfort

“…It turned out that the first building, despite poor indicators, was, according to the respondents, the best room for thermal comfort, in contrast to the other two buildings. Krawczyk [5] modified the Fanger model by subtracting the value of -0.00015 to carbon dioxide, on the other hand, the authors [6] improved the Fanger model with skin temperature, which helped to more accurately predict thermal sensations in the subjects. Shin et al [7] used the discrepancy between the PMV and the TSV to analyse the effects of carbon dioxide.…”