Installation of short-circuit prevention structure in heat exchangers
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GB151 explains how to implement short-circuit protection mechanisms, but it does not go into detail on when such measures should be applied. Could you please explain this?~
1. Generally, a short-circuit prevention structure is required when high heat transfer efficiency needs to be ensured. 2. Multi-stage heat exchangers also need a short-circuit prevention structure
It is generally used on either side of the baffle notch, especially in floating-head and U-tube types.
GB151 5.13.1 The bypass baffle is installed to reduce the flow in stream C. 5.13.2, 5.13.3 The guide tubes and intermediate baffles are installed to reduce the flow in stream F
I read in a book that a bypass baffle should be installed when the shell-side fluid is in a single-phase flow and the minimum distance between the outer wall of the outermost tube and the inner wall of the shell is greater than the tube spacing. Of course, multi-tube heat exchangers are also often installed