Thermal stresses acc. to AD S3/7

Thermal stresses in heat exchangers with rigid tubesheets

Attention!
This calculation is only a simplified estimation and does not replace a detailed design calculation.

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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	N/mm²

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	N/mm²



Results
Middle thermal stress:
	in vessel shell σ_M	N/mm²
	in heating tubes σ_R	N/mm²

Equivalent axial tube force F_R		kN