| 摘要 |
An evaporator (11) is provided that carries out heat exchange between exhaust gas discharged from an exhaust port (16B) of an internal combustion engine and water, the evaporator (11) including a large number of heat transfer plates (83) stacked at predetermined intervals from each other in a direction perpendicular to the plane of the paper and a large number of pipe members (90) running through the heat transfer plates (83) and being connected in a zigzag shape at opposite ends, and exhaust gas passages (87, 88, 89) being defined between the heat transfer plates (83) by a partition wall (86) formed by making projections formed on the heat transfer plates (83) abut against each other. While passing through the exhaust gas passages (87, 88, 89), the exhaust gas discharged from the exhaust port (16B) carries out heat exchange with water flowing through the pipe members (90), and the water that has received the thermal energy of the exhaust gas turns into high temperature, high pressure steam. It is thus possible to maximize the heat transfer area of the evaporator (11) and thereby improve the heat exchange efficiency. <IMAGE> |
