How is hot side and cild side determined in heat exchanger?
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When designing a shell-and-tube exchanger, one of the first issues is deciding which fluid should go on the shell side and which on the tube side. So, let's look at some rules-of-thumb for several key factors, realizing such rough guidelines won't cover all cases.
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Explanation:
The simplest heat exchanger is one for which the hot and cold fluids move in the same or opposite directions in a concentric tube (or double-pipe) construction. In the parallel-flow arrangement of Figure 18.8(a), the hot and cold fluids enter at the same end, flow in the same direction, and leave at the same end.
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