A method for heating motor vehicle interiors has a layer system of electrically heated ducts through which air is blown through speed restricting filling

摘要

The fan (20) blows air through a central duct layer (10) of a sandwich (18) in a housing (16), having electric resistance heating (14) as well as through the outer layers (12) all of which contain a network of flow resisting material to diffuse the air flow and increase the heat transfer.