Thermal stresses in heat exchangers with rigid tubesheets
according to AD-2000 Merkblatt S 3/7
Input data
Vessel shell:
outside diameter
d
M
mm
wall thickness
s
M
mm
middle temperature
T
M
°C
coefficient of thermal expansion
α
M
µm/m/K
modulus of elasticity
E
M
MPa
Heating tubes:
outside diameter
d
R
mm
wall thickness
s
R
mm
number of tubes
n
R
middle temperature
T
R
°C
coefficient of thermal expansion
α
R
µm/m/K
modulus of elasticity
E
R
MPa
Calculate
Results
Middle thermal stress:
in vessel shell
σ
M
MPa
in heating tubes
σ
R
MPa
Equivalent axial tube force
F
R
kN
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