G0600-3-2 夏期駐車時における車室内温度低減のための換気方法の検討(熱工学部門一般講演(3):伝熱(3))

抄録

In a car under summer solar radiation, it is well known that the temperature in a car cabin becomes very high and is found to be over 90 degree C on the top of the front dashboard and also air temperature around the driver's seat were over 65 degree C. Thus, ventilation system is one of the effective methods for keeping comfortable thermal environment of a car cabin. In this paper, we conducted numerical simulations under the conditions that ventilation cold air came into the cabin forcibly from face mode vents and hot air in the cabin was exhausted freely from a rear duct located on rear dashboard, and examined the ventilation effects on the number of inlet ducts, exhaust duct position, and exhaust duct diameter. It was clarified that central side inflow, rear center exhaust, and exhaust duct diameter of D=100[mm] were the effective ventilation methods for temperature mitigation around driver's seat.