To provide a cooling system with high energy efficiency capable of stabilizing an operation temperature of a fuel cell, and sufficiently radiating heat of a cooling liquid even under an environment in which the temperature of ambient air is high.
A cooling system includes a fuel cell (10), a radiator (20) radiating heat of a cooling liquid, a cooling liquid circulation passage (30) in which the cooling liquid circulates and flows, a radiator bypass passage (40) connecting a cooling liquid circulation passage upstream of the radiator and a cooling liquid circulation passage downstream of the radiator so that the cooling liquid bypasses the radiator, a heater core (60) provided on the radiator bypass passage, a heater core bypass passage (70) branched from an upper stream than the heat core so that the cooling liquid bypasses the heater core, and a flow rate adjustment part (70a) making the cooling liquid difficult to flow to the heater core when the cooling liquid is under a low temperature, and making the cooling liquid easy to flow to the heater core as the cooling liquid is getting warmer.
| JP2007038952A | 2007-02-15 |
Masahiro Fujii
Masaaki Iida
Yasunari Mita