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Question:

the formulas of thickness of shells in heat exchangers?

i have little information about ASME please put me the formulas!!!!I need your help!!!!

Answer:

Heat Exchanger Formulas
t = (P*R)/(S*E - 0.6P) t = Minimum required thickness (in.) P = Design pressure (psi) R = Inside radius (in.) S = Allowable stress (psi) D = Inside diameter (in.) E = Weld joint efficiency factor, determined by joint location and degree of examination
its like any vessel or tank ! you need to determine the shape of your hxn then the pressure on it and the material of construction and then use the corresponding equation
There is much more to designing a heat exhcanger shell than just coming up with a wall thickness. You need to know the rules for the various connections as well as the ends of the heat exchanger. You also need to know the material being used, it stress values and if any type of heat treatment is needed. Below is one site where you can calculate vessel wall thickness but you need to have other information such as the type of non destructive testing you are going to use so a joint efficiency can be selected. The design of pressure containing equipment is not just a simple plug numbers into a formula and get an answer.

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