Interior air conditioning for electric vehicle EVA: New approach on vehicle interior cooling to increase comfort and reduce energy consumption

TUM CREATE's EVA is a fully electric, purpose built electric taxi. One main feature is the novel cabin air conditioning. In this paper this new concept is explained which aims at the improvement of thermal comfort at reduced energy consumption. The focus is on cooling in hot and humid ambient conditions. Starting from a standard Heating, Ventilation and Air Conditioning (HVAC) unit, a fully independent four zone air conditioning is realized by designing a new air distribution box. Air outlets in the roof enable local cooling close to the body. The challenge of the geometrical integration of the air ducts and outlets is discussed and evaluated to minimize noise, reduce unwanted heat loss and prevent discomfort through draught. The seats provide passive and active ventilation. The choice of cover and cushion material and the integration of fans meet the problem of thermal discomfort through high contact surface temperatures and increased sweat production.     «

TUM CREATE's EVA is a fully electric, purpose built electric taxi. One main feature is the novel cabin air conditioning. In this paper this new concept is explained which aims at the improvement of thermal comfort at reduced energy consumption. The focus is on cooling in hot and humid ambient conditions. Starting from a standard Heating, Ventilation and Air Conditioning (HVAC) unit, a fully independent four zone air conditioning is realized by designing a new air distribution box. Air outlets in...     »