Comprehensive Method for the Evaluation of Thermal Comfort of Clothed Body

Clothing thermal comfort is having been an international hot research topic since several decades. In order to evaluate the thermal comfort, it is certainly related to the coupled-iteration calculation of heat-wet equations of human body-clothing -Microclimate system. It is founded that the boundary conditions of human body surface and inner surface of clothes are very important. An appropriate and reasonable boundary condition impacts on calculation of temperature field and humidity field and evaluation of human thermal comfort directly. This paper use the experience equation based on a large number of experimental data as a comprehensive evaluation index, which includes human body surface temperature T-S, clothing inner surface temperature T-i, clothes inner surface humidity theta(iv), human heart rate B-1, sweat evaporation rate B-2, clothing thermal resistance R-if and clothing wet resistance R-vf seven factors. Clearly, the experience equation reflects related parameters in human body-clothing-microclimate system, particularly thermal feeling parameter. Some typical examples show that the boundary conditions in this paper are effective to heat, wet calculation of the human body -clothing-microclimate system. Using the experience equation above-mentioned as the comprehensive evaluation index of human body thermal feeling can get a numerical result closed to experiment. Numerical results of the typical examples show that the method is effective.