| 摘要 |
PROBLEM TO BE SOLVED: To enhance the humidifying ability by arranging a group of division fins which are divided in not less than a specific number in a ventilation direction and separately supplying humidifying water to not less than a specific number of divided groups of fins at a catalyst inlet side and at the leeward side. SOLUTION: A group of fins 1 are separated at least in three in a ventilation direction A such that these divided groups of fins 9, 9... are arranged in a spaced apart manner in the ventilation direction A. This divided group of fins 9 has the corrosion resistance, the hydrophilic property or the corrosion resistance hydrophilic property. Furthermore, water supply means B capable of adjusting a water suction amount are provided for separately supplying humidifying water to at least two divided groups of fins 9, 9 at the leeward side and the heating medium inlet side. In case such as a heating operation which necessitates humidifying, a desired valve is opened so as to wet the divided group of fins 9 with humidifying water. Then, at the divided group of fins 9 to which humidifying water is supplied, humidifying water is vaporized by both of the latent heat of vaporization of ventilation air made of hot air from the divided group of fins to which humidifying water is not supplied and the heat of a coil circulating medium so that coil circulating air is humidified thus enhancing the humidifying ability. |
