1996-02-01

Air Conditioning System for Electric Vehicle 960688

The electricity stored in the battery is the only source of energy driving an electric vehicle (EV). Therefore, the target of the air conditioning system for EVs is to cool and heat the air in the cabin and demist the wind shield using a small power consumption. We have developed a dehumidifying heat pump system that consists of an interior unit constructed to separate the recirculation air flow and fresh air flow, an exterior unit capable of controlling the absorption and radiation of heat, and an inverter-controlled, electric-driven compressor. The results of an experiment using this system proved that it could provide comfortable cabin air and good visibility through the wind shield with small power consumption at ambient temperatures ranging from -10°C to 40°C.

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