For a double-pass U-shaped heat exchange tube, how is the heat exchange area calculated? And why is there a factor of 2?
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For a double-pass U-shaped heat exchange tube, how is the heat exchange area calculated? Why is there a factor of 2 shown in the diagram? Using the formula 3.15 * outer diameter * length of the straight edge section * number of pieces * 2, the result is approximately 1100
In the model numbers listed in the table, 2374 refers to the heat exchange area according to the model numbering system. However, for a heat exchanger with DN1800 and a tube length of 6 meters, even with 4 tube passes, the heat exchange area cannot reach such a high value; a rough calculation suggests it is around 1400 m2.