Should the area of a falling film heat exchanger be calculated based on the inner wall or the outer wall?
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As the title suggests, my understanding is that it should be calculated based on the inner wall, right?
The calculation results for the inner wall and the outer wall are the same; for ease of calculation, the outer wall is used as the basis
Oh, then the 50 square meters of falling film that we usually talk about should be calculated based on the inner wall area, right?
So, the 50 square meters mentioned usually refers to the inner surface area, right?
Unless otherwise specified, the heat exchange area refers to the outer wall.
The total price is calculated based on the outer wall; it can also be based on the inner wall.