U-tube heat exchanger
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What is the maximum temperature difference for the central tube sheet that is acceptable?
I’m sorry for the mistake; what I meant to ask is: what is the maximum temperature difference that the tube sheet in a U-tube heat exchanger can withstand?
In U-tube heat exchangers, the tubes are not welded together with the shell as a single unit; therefore, there is no need to consider the temperature difference between the tube side and the shell side
This type of heat exchanger is generally not affected by temperature differences, has a wide range of applications, and is widely used.
What I need to consider is the tube sheet. In U-tube heat exchangers, one side of the tube sheet is at a higher temperature while the other side is at a lower temperature; there is a maximum temperature difference beyond which it becomes unacceptable
This is also related to the current domestic manufacturing capacity for U-tube heat exchangers in terms of diameter; when the temperature difference is large, a significant heat exchange area is usually required, which results in the need for a U-tube heat exchanger with a large size that cannot actually be manufactured, rendering such plans pointless.
It’s hard to generalize about this. What was said on the 7th floor is correct; it depends on your specific operating conditions, and the number of tubes also has an impact on this temperature difference. And for U-tube heat exchangers, does this need to be taken into consideration?