melegvíz tartályok
Worksheet for pressure vessel design
Drawing No. Project No. Sheet of
Client PED 2014/68/EU (97/23/EG)
Description Melegvíz tároló tartály
Project calculated according to EN 13445
Material data according to EN 13445
Creep range (if applicable)
With lifetime monitoring No
Design lifetime 100000 h
Design data 50 m3 10 m3
Max. allowable working pressure 10 bar 10 bar
Test pressure in vertical position 15 bar 15 bar
Test pressure in horizontal 15 bar 15 bar
position
External pressure 1 bar 1 bar
Design temperature 70 °C 70 °C
Corrosion allowance 0 mm 0 mm
Joint efficiency 0.85 0.85
Volume 50 m³ 10 m³
Category
Module
Comments
Strength Calculation Software Program System ATLAS Version 10.0.98
Developed by Lauterbach Verfahrenstechnik GmbH
Certified per DIN EN ISO 9001:2015 Certificate Number 01 100 044763
1 2023. 02. 16.
melegvíz tartályok
Unstiffened cylinders under external pressure - DIN EN 13445-3/8: 2021-12 & DIN EN 14025:
2018-09
Unstiffened cylindrical shells
Unstiffened cylindrical shells according to 8.5.2
Regulation (0=EN13445-3, 1=EN14025) 0
EN 13445-3: Unfired pressure vessels
Load case Operation
Calculation temperature t 70 °C
Calculation pressure P 0.1 MPa
Material properties of the cylinder
Material designation 1.4404(P)
Poisson's ratio ν 0.3
Austenitic steel? Yes
Wall thinning allowance δe 0 mm
Corrosion allowance c2 0 mm
Thinning allowance during manufacturing δm 0 mm
Total allowance ∑(δ) 0 mm
Material strength (Re, Rp, Rm) K 484 N/mm²
Safety factor according to section 8.4.4 S 1.5
Modulus of elasticity E 196400 MPa
0.2% proof stress at operating temperature Rp02 198.4 N/mm²
0.2% proof stress at room temperature Rp02p 220 MPa
Allowable elastic limit (Rpx, Rpx/1.25) σe 158.7 N/mm²
Rem.:
Geometry of the vessel
Length of cylindrical section Lcyl 11500 mm
External height of dished end 1 h' 550 mm
External height of dished end 2 h'' 550 mm
Unsupported length of shell L 11940 mm
Outside diameter Da 2338 mm
Nominal wall thickness of cylinder en 15 mm
Analysis wall thickness ea 15 mm
Mean radius of the shell R 1162 mm
2 2023. 02. 16.
melegvíz tartályok
Results of the analysis of collapse by external pressure
Limit pressure for circumferential yield py 2.05 MPa
Number of circumferential buckling waves ncyl 3
Parameter π · R/L Z 0.3056
Circumferential strain at collapse ε 1.374e-4
Theoretical buckling pressure pm 0.3486 MPa
Ratio pm/py 0.1701
Ratio (8.5-5) pr/py 0.08503
Allowable pressure (pr/S) pall 0.1162 MPa
Allowable out-of-roundness (8.5.1-1) 0.00581 -
Condition P= 0.1 < 0.1162 = pr/S
Load case Operation
The strength condition is fulfilled
3 2023. 02. 16.
melegvíz tartályok
Unstiffened cylinders under external pressure - DIN EN 13445-3/8: 2021-12 & DIN EN 14025:
2018-09
Unstiffened cylindrical shells
Unstiffened cylindrical shells according to 8.5.2
Regulation (0=EN13445-3, 1=EN14025) 0
EN 13445-3: Unfired pressure vessels
Load case Operation
Calculation temperature t 70 °C
Calculation pressure P 0.1 MPa
Material properties of the cylinder
Material designation 1.4404(P)
Poisson's ratio ν 0.3
Austenitic steel? Yes
Wall thinning allowance δe 0 mm
Corrosion allowance c2 0 mm
Thinning allowance during manufacturing δm 0 mm
Total allowance ∑(δ) 0 mm
Material strength (Re, Rp, Rm) K 484 N/mm²
Safety factor according to section 8.4.4 S 1.5
Modulus of elasticity E 196400 MPa
0.2% proof stress at operating temperature Rp02 198.4 N/mm²
0.2% proof stress at room temperature Rp02p 220 MPa
Allowable elastic limit (Rpx, Rpx/1.25) σe 158.7 N/mm²
Rem.:
Geometry of the vessel
Length of cylindrical section Lcyl 2800 mm
External height of dished end 1 h' 500 mm
External height of dished end 2 h'' 500 mm
Unsupported length of shell L 3200 mm
Outside diameter Da 2032 mm
Nominal wall thickness of cylinder en 12 mm
Analysis wall thickness ea 12 mm
Mean radius of the shell R 1010 mm
4 2023. 02. 16.
melegvíz tartályok
Results of the analysis of collapse by external pressure
Limit pressure for circumferential yield py 1.886 MPa
Number of circumferential buckling waves ncyl 5
Parameter π · R/L Z 0.9916
Circumferential strain at collapse ε 3.879e-4
Theoretical buckling pressure pm 0.9052 MPa
Ratio pm/py 0.48
Ratio (8.5-5) pr/py 0.2409
Allowable pressure (pr/S) pall 0.3029 MPa
Allowable out-of-roundness (8.5.1-1) 0.01514 -
Condition P= 0.1 < 0.3029 = pr/S
Load case Operation
The strength condition is fulfilled
5 2023. 02. 16.
