Technical Paper
Partial Recirc/Two Layer Flow HVAC Energy Savings and Defog Performance in Electric Vehicles
2021-04-06
2021-01-0212
Vehicle climate control systems are currently being investigated to reduce energy consumption and therefore improve range for Battery Electric Vehicles (BEVs), Plug-in Hybrid Vehicles (PHEVs), and Extended Range Electric Vehicles (EREVs), while they operate in pure electric mode. In particular, vehicle heating systems have been investigated due to their high energy demand in winter time to maintain cabin comfort. On the other hand, heating energy is typically not required with internal combustion engines where the waste heat from the engine is sufficient to heat the vehicle’s cabin. The energy required to heat traditional vehicle architecture under different ambient is typically well understood in the automotive sector. Scavenging heat (ambient or vehicle) and reducing the thermal vehicle load are two main methodologies to improve warm-up or reduce energy.