The shell-and-tube heat exchanger has 1 m² less heat exchange area
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Can a shell-and-tube heat exchanger be used that is old, but has a heat exchange area of 1 m² less?
I’m afraid this will need to be calculated. Also, what is the heat exchange area you need? If 1.5 was required and you’re short by 1, then it obviously won’t work; if hundreds of square meters are needed, missing 1 square meter is probably not a problem
The key is the original area; if it was 20 m2 or more, there should be no problem. Because there is usually a margin of about 5-10% in the design.
Designs usually include a margin; 1㎡ has an extremely minor impact on heat exchangers with areas of several dozen ㎡.
“How should the concept of \"design margin\" be understood? A value is calculated through process calculations, and a certain margin is added to this value to determine the equipment parameters? The original heat exchanger was a 16㎡ enamel-coated plate-type condenser; can a 15㎡ shell-and-tube type be used as a substitute?
Just take a look at the design and manufacturing of the heat exchanger, and you’ll understand.