| 摘要 |
PURPOSE:To make a structure compact, simple, and inexpensive by connecting a plurality of cooling pipes with common first and second manifold pipes, and connecting the first manifold pipe with a radiator and the second manifold pipe with a heater, and arranging a liquid level controller. CONSTITUTION:In cooling operation, the liquid level of a heating medium is set in the first liquid level 19 by operation of a liquid level controller 21. Heat generated in a fuel cell 11 is conducted to a cooling plate 6 to evaporate a heating medium in a cooling pipe 7. The vapor is introduced into the first connecting pipeline 8a having a rising gradient by buoyancy, and introduced into the first manifold pipe 10a through the first header pipe 9a. The vapor come out from many pipes 9a arranged every cooling plate 6 is gathered in one tube 10a, the rises and reaches the liquid level 19. The vapor continues to rise through the pipe 10a and reaches a tube 14 in a radiator 13. The vapor in the tube 14 is condensed by heat exchange with cooling water in a drum 15 of the radiator 13. The condensed liquid returns to the pipe 10a by gravity, and falls to the liquid level 19 and returns to the cooling pipe 7 through the pipe 10a, the pipe 9a, and the pipeline 8a. In heating operation, the heating medium is set to the second liquid level 20. |
