Abstract: Cabin thermal comfort may decrease because of unreasonable operation of ground air conditioner during ground working, therefore the cabin environmental factors which may influence passenger爷s comfort should be comprehensively evaluated. According to the characteristics of cabin environment, PMV is selected as thermal comfort evaluation index. Employing simplified PMV model, the influence of cabin environmental factors (temperature,humidity, air flow speed) on PMV index is analyzed. Results show that cabin temperature has the greatest impact on cabin thermal comfort, air flow speed is the second factor, and humidity has least impact. Cabin thermal environment control based on PMV is more efficient and energy-saving than traditional way (constant and fixed cold/hot air supply).

Key words: thermal comfort, PMV index, cabin environmental factor