What are the advantages of a series-connected heat exchanger?
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I have a project in which two different engineering companies performed process calculations. One company used a heat exchanger with a slightly larger diameter, while the other used two heat exchangers with smaller diameters connected in series; the heat exchange area and the length of the heat exchange tubes were the same in both cases. The only differences were the diameter of the equipment and the number of tubes. Given that the heat exchange efficiency is the same, what are the advantages of using two heat exchangers in series compared to using just one?
One saves space, the other saves costs
It’s not necessarily a matter of cost and space. If there is a crossover in the logistics temperature, using two heat exchangers in series can resolve the issue.
What is temperature crossover? Could you explain it, please? Thank you
Suppose there are two streams undergoing heat exchange: a high-temperature stream entering at 180 degrees and exiting at 120 degrees, and a low-temperature stream entering at 100 degrees and exiting at 140 degrees. In this case, the temperatures intersect, and it is not possible to handle this situation using a shell-and-tube heat exchanger.