Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign.
Abstract
HEVs idle their engine during the stops to meet the cooling and heating needs. But, idling decreases fuel
economy and increases engine wear and emissions. The report explores alternative strategies for air conditioning the
HEV during the stop times. Simulation analyses are used to identify fundamental differences and new technology
tradeoffs encountered in HEVs. An analysis of cooling and heating loads on a car under typical weather and driving
conditions is combined with efficiency estimates for an advanced a/c system to compare different cooling strategies
in terms of fuel usage and overall system COP. Options considered include belt and electrically driven compressors,
with thermal and electrical storage technologies. The results of this parametric analysis narrow the range of cooling
and heating strategies to be considered for detailed analysis and prototype testing.Air Conditioning and Refrigeration Project 14