Calculation of tubular heat exchange area
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This post was last edited by B0SS on 2018-8-20 at 14:31. Hey. Now I need to calculate the heat exchange area. Should the heat exchange surface area be calculated based on the outer diameter or the inner diameter? The calculation formula is: length * 3.14 * diameter? Thank you for the answer.
1. Outer diameter 2. Area = PI(3.14) * D (diameter) * L (length) The above is for reference only
It is generally calculated based on the outer surface, although occasionally it is calculated based on the inner surface as well.
During design, calculations were also done using the mean diameter (that is, the average of the inner diameter and the outer diameter).
According to GB/T151, the heat exchange area of a shell-and-tube heat exchanger is based on the outer diameter of the heat exchange tube
The heat exchange area of a heat exchanger is calculated based on the outer diameter of the heat exchange tubes.
Calculated based on the outer diameter of the heat exchange tube, the length requires deducting the thickness of the tube sheets on both sides.
The default is always the outer diameter. If you use the inner diameter or mean diameter in an unusual way, you must explain it.
Pressure vessels are classified based on their outer surface, while shell boilers are classified based on their inner surface.
Outer diameter: the thickness of the tubesheet and the discount for U-tube support must be taken into account