| 摘要 |
PROBLEM TO BE SOLVED: To provide two waste heat recovery devices of outer periphery cooling types and consistent recovery types, which are arranged in series to each other and out of which the waste heat recovery device on the downstream side can perform efficient heat recovery.SOLUTION: Each of two waste heat recovery devices (1A, 1B) in series, including a columnar fin member (2) arranged inside an exhaust passage (21), and a cylindrical pipe (11) having a water jacket (15) inside through which cooling liquid flows and provided on the outer periphery of the fin member (2), is of the outer periphery cooling type for allowing the transfer of heat to the cooling liquid flowing from the fin member (2) having temperature rise with exhaust gas through the water jacket (15) to generate temperature distribution in the cross section perpendicular to the axis of the fin member (2), and of the consistent recovery type for allowing consistent flow of the exhaust gas to the fin member (2) to recover waste heat. In the exhaust passage (21) between the two waste heat recovery devices (1A, 1B), passage cross-section temperature leveling means (61) is provided for leveling the non-uniformity of an exhaust temperature caused in the passage cross-section of the exhaust passage (21).SELECTED DRAWING: Figure 7 |
