Delivering passenger thermal comfort

WHITE PAPER

Designing energy-efficient HVAC systems for EVs while balancing passenger comfort and vehicle performance

For years, carmakers have been designing heating, ventilation and air conditioning (HVAC) systems for the passenger cabin by sizing a unit to provide a target temperature for the cabin in a certain period of time. This was easily accomplished when carmakers had a large engine with excess heat to work with. With today’s electric vehicles, there are no longer large amounts of wasted heat. Now there is a trade-off on how energy is used.

This white paper describes how an integrated workflow helps break down barriers between vehicle subsystems. It answers questions such as: Should more energy be spent cooling the battery/motor or extending the vehicle’s driving range? How much energy should be put into keeping the passengers comfortable?

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