Empirical formula for estimating the weight of heat exchange tubes based on the heat exchange area
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What is that empirical formula for estimating the weight of heat exchange tubes based on the heat exchange area?
I think there will be differences depending on the specifications of the heat exchange tubes – for example, variations in the tube wall thickness, the inner diameter of the heat exchange tubes, and so on. This post was last edited by wode*aohei on 2009-3-18 08:15]
What type do you need? I have a design manual for shell and tube heat exchangers; it was given to me by my teacher
(Heat exchange area/outer surface area of each heat exchange tube) * weight per tube = weight of heat exchange tubes
Heat exchange area (m2) × heat exchange tube wall thickness (mm) × material density (T/m3) = weight (kg).
Alternatively, pipe routing software could be considered; it’s convenient to use within CAD, and it can calculate the number of heat exchange pipes needed, from which the weight can be determined. I use this method to estimate the weight of heat exchanger quotes.
Heat exchange area (m2) × heat exchange tube wall thickness (mm) × material density (T/m3) / outer diameter × inner diameter = weight (kg).
The weight of the heat exchange tube is area × thickness × specific gravity. If 1 square unit uses a 1.0 mm thick stainless steel pipe, the weight will be 7.93 kilograms, or approximately 8 kilograms, which makes it easy to calculate. For 100 square units, the weight would be 800 kilograms, and so on
The weight of the heat exchange tube is calculated as: coefficient K * (outer diameter – wall thickness) * wall thickness * length of the heat exchange tube * heat exchange area / heat exchange area per tube. The units for outer diameter and wall thickness are mm, the unit for the length of the heat exchange tube is m, and the unit for area is m2. For stainless steel with a specific gravity of 7.98, the coefficient is 0.02507; for stainless steel with a specific gravity of 7.93, the coefficient is 0.02491. For carbon steel tubes, the coefficient is 0.02450. The heat exchange area per tube is calculated as outer diameter * π * length of the tube / 1000, using the same units as mentioned above