23 September 2011
The market of eco-friendly vehicles developed by manufacturers worldwide is
expected to expand to 3 million vehicles by 2020. The main issue with these vehicles is the limitation of the driving range when using the heating system. The purpose of this study is to
decrease the amount of energy consumed by the heating system by applying a heat pump system. We have developed some highly efficient heat pump systems that make up for
vehicle heat loss including heat from the drive motor and warmed cabin air. One of these heat pump systems is able to run continuously and maintain stable operation even in lower ambient temperature conditions. We verified that this heat pump system has improved the electric power efficiency by 10% to 60% in comparison to the current heating system. It is also foreseen that this system will contribute to extending the driving range of the vehicle.