| 摘要 |
A heat exchanger designed to recover heat from a substantial gas flow is designed as a self-supporting, gastight unit, in which upper and lower transverse end boxes (10a, b; 11a, b), are connected by means of horizontal, longitudinal tubes (12a, b), said tubes forming the frame of the top and bottom walls. A plurality of vertical pipes (13a, b) are welded between the tubes (12a, b). The outermost pipes (13a) and the tubes (12a, b) are connected by means of flanges, to produce gastight membranes. The remaining pipes (13b) around which gas is flushed are provided completely or partially with external surface-enlarging elements (17). |
