Temperature Reduction in a Car Cabin under Summer Solar Radiation (Temperature Reduction around Driver’s Seat by Examination of Blowing Direction)

Abstract

In a car under summer solar radiation, the surface and air temperatures become very high, for example the air temperature around driver’s seat was over 65 degree C. Thus, a ventilation system is one of the important methods for keeping comfortable thermal environment. In this study, in order to clarify the effect of temperature reduction around driver’s seat, the experiment of measuring temperature and the numerical simulation under changing the blowing direction to driver’s seat backrest in a car cabin were conducted. In case of flow rate of 100m 3 /h, it was found that the effects of temperature reduction on the driver’s seat and around the driver’s seat with FACE-C mode ventilation were remarkable compared with FACE mode ventilation.