Air conditioning system for e.g. series-type hybrid car, has controller differentiating output condition from another condition such that frequency outputting request signal is lower than that in other air outlet operating mode

摘要

The system (1) has a heat exchanger (14) heating air blown into a passenger compartment, while performing heat exchange between the air and a thermal fluid. A controller outputs an operating request signal to an attachment (EG) when a preset output condition is fulfilled to keep a temperature of the thermal fluid equal or higher than a preset temperature. The controller differentiates the condition from another output condition such that frequency for outputting of the signal in a vision operating mode is lower than that in any other air outlet operating modes as the vision operating mode.