Is the size of the heat exchanger tube ports related to the flow area of the heat exchange tubes?
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Today, I have a question for everyone: when determining the inlet diameter on the tube side of a U-tube heat exchanger, is it necessary to take into account the flow area of the inner diameter of the heat exchange tubes? For example, if the flow area of the inlet pipe is larger than half of that of the U-shaped heat exchange tubes, could this result in insufficient gas flow at the inlet, thereby subjecting the partition to high pressure? If a drain hole is drilled in the partition, it can help to equalize the pressure; but would this also increase the pressure on the partition? Gurus, you can discuss with each other!
The design of heat exchangers should indeed take into account the relationship between the inlet diameter of the tube side and the flow area of the inner diameter of the heat exchange tubes. If the flow area of the inlet pipe is greater than half of the flow area of the U-shaped heat exchange tube, it may result in insufficient gas flow, thereby causing high pressure at the partition. Drilling a vent can balance the pressure, but it may also increase the pressure on the diaphragm. During design, it is necessary to comprehensively evaluate these factors to ensure safe and effective operation. .
During normal operation, the pressure difference across the partition is essentially equal to the frictional losses of the fluid within the heat exchange tubes. A larger inlet pipe can reduce the energy losses of the fluid during transport, while smaller heat exchange tubes require turbulence to ensure effective heat exchange. The partition experiences the greatest pressure at the moment of startup