Calculation of the flow area in the shell side of a shell-and-tube heat exchanger
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Discussion: The errors of the two methods are quite large; which method is correct? First calculation method: The formula for calculating the flow area of the fluid in the shell side is S0 = B * D * (1 – d0/t). Here, S0 represents the flow area of the fluid in the shell side; B is the spacing between the baffle plates, d0 is the outer diameter of the heat transfer tubes, t is the spacing between the heat transfer tubes, and D is the inner diameter of the shell ； Second calculation method: The formula for calculating the flow area of the fluid in the shell side is as follows: S0 = B * (D – N*d0). Here, S0 represents the flow area of the fluid in the shell side; B is the spacing between the baffle plates, d0 is the outer diameter of the heat transfer tubes, N is the number of tubes arranged along the transverse centerline, and D is the inner diameter of the shell ；
1. According to your reasoning, what you want to calculate is the flow area at the inlet of the tube bundle； 2. GB/T 151-2014, Appendix J: J.1 – Flow area at the inlet of the shell; J.2 – Flow area at the inlets and outlets of the tube bundle. It is likely that most people downstairs will recommend that you study this standard. It’s much more detailed than what your formula calculates. . .