Liquid distribution in shell-and-tube heat exchangers
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In a shell-and-tube heat exchanger (for liquid-liquid heat exchange), how should the high-flow rate liquid (the hot fluid) at the inlet of the tube side be distributed to ensure that the liquid flows evenly (or at relatively constant speeds) through each heat transfer tube? I have encountered situations where the flow is faster in the middle of the heat exchanger and slower around it; as a result, the temperature of the material coming out from the middle is higher than that of the material coming out from the surrounding areas! ! At least, the temperature of the material exiting is different, which results in a poor heat exchange effect. Could the experts please help? ?
This post was last edited by wiseboy on 2018-8-14 17:16. The pipeline is filled with gas, so it’s no big problem； The pipeline is filled with liquid, which is a serious problem. The piping is a liquid; 1) multiple inlets can be considered, such as two flanges/nozzles on either side of the head ； 2) A guide plate is installed on the inner side of the pipe opening; it is conical in shape, and as the fluid is sprayed at the apex of the cone, it spreads out in all directions.
Thank you for the reminder from above. By liquid, I mean the liquid that flows through the tube side, and since the volume is relatively large, there is a need for some kind of distribution or guidance of it. Are there any application examples in this area that you could share? xydy001@126.com
This post was last edited by wiseboy on 2018-8-16 09:01. Yeah! That’s exactly how it is!