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Example calculation

Thermal stresses in heat exchangers with rigid tubesheets

according to AD-2000 Merkblatt S 3/7

Input data

Vessel shell:   
  outside diameter dM   mm
  wall thickness sM   mm
  middle temperature TM   °C
  coefficient of thermal expansion αM   µm/m/K
  modulus of elasticity EM   MPa
Heating tubes:   
  outside diameter dR   mm
  wall thickness sR   mm
  number of tubes nR    
  middle temperature TR   °C
  coefficient of thermal expansion αR   µm/m/K
  modulus of elasticity ER   MPa


Middle thermal stress:   
  in vessel shell σM   MPa
  in heating tubes σR   MPa
Equivalent axial tube force FR   kN
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