| 摘要 |
FIELD: heating. ^ SUBSTANCE: shell-and-tube heat exchanger includes staggered bank of heat exchange tubes with variable longitudinal profile repeated with specified pitch throughout the length of tubes arranged with offset between adjacent tubes; at that, longitudinal tube profile includes straight sections and protrusions, and tubes are arranged in bank with alternation of cross sections of inter-tube space F1 and F2; at that, 0.4<F1/F2<0.6, where F1 - area of the section formed with protrusions of adjacent tubes, F2 - area of the section formed with straight sections of adjacent tubes and with alternation of lengths of channels of inter-tube space L1 and L2; at that, 0.2<L1/L2<0.4, where L1 - length of channels between the closest tops of protrusions of adjacent tubes, L2 - length of channel between tops of tube protrusions. ^ EFFECT: increasing heat release efficiency, and optimum intensification of heat exchange. ^ 3 dwg |
