Vol. 54 No. 2 (2017)   Air-Conditioning & Refrigeration
Technical Papers

Development of Heat Pump System for Plug-in Hybrid Vehicles

YASUO KATAYAMA
NOBUYA NAKAGAWA
TOMOKI HASE
MANABU SUZUKI
YASUNOBU JOUBOUJI

The product competitiveness of plug-in hybrid vehicles would increase dramatically if the driving mileage corresponding solely to the initial battery charge without starting the engine -Electric Vehicles (EV) driving mileage - increased. On the other hand, in terms of comfort, as the heating while the engine is off relies on electric water heaters, there are some disadvantages including increased power consumption as well as decreased EV driving mileage. This paper introduces the power-saving heat pump system which is used as a heat source for the water heater.