| 摘要 |
The recuperator (8) has a heat exchange region provided by a ceramic sleeve with a number of ridges (19) projecting radially inwards and outwards, spaced apart in the longitudinal direction of the recuperator. The ridges have a radial height which corresponds to between 0.8 and 4 times their wall thickness and a ridge length in the longitudinal direction of the recuperator of between 4 and 40 times the wall thickness, with an enclosed angle of between 75 and 125 degrees between 2 adjacent ridges. |
