The Optimum Windshield-Defog and Passenger-Comfort Methods of a Vehicle in all Seasons

The knowledge and principles of air conditioning as well as numerical analyses and experiments are applied to obtain the various defog guides depending on extreme wet-conditions and the various outside air temperatures in all seasons. The defog guides can be listed as a leaflet to let the drivers know how to operate their air-conditioning control panel properly to defog the windshield with suitable air to obtain the safe and comfortable driving.