Tank강도 계산 공식 및 용량 계산 공식


Calculation of air compressor reservoir strength and volume


1. Calculation of strength of reservoir

We apply the rule of JIS B 8243 (Structure of boiler pressure
reservoir)

1) Thickness of shell plate (mm)

The equation is as follows ;

             P D
t= ------------------ + C
     200 σxη - 1.2 p

t : thickness of shell plate (mm)
σ : tensile strength of reservoir material (kg/mm2)
η : efficiency of length joint (%)
D : inside diameter of reservoir (mm)
C : corrosion allowance (mm)
p : internal pressure of reservoir (kg/mm2)
x : allowable stress rate on tensile strength
In case of steel, apply 1/4


2) Thickness of end plate

The equation is as follows ;
       P R
t = ------- + C
   150σxη

t : thickness of end plate (mm)
σ : tensile strength of reservoir material (kg/mm2)
η : efficiency of length joint (%)
C : corrosion allowance (mm)
p : internal pressure of reservoir (kg/mm2)
x : allowable stress rate on tensile strength
In case of steel, apply 1/4



Calculation of reservoir volume

① Volume of shell plate

       π
V= ----- D2 ℓ
       4
D : internal diameter of reservoir (mm)
ℓ : length of shell plate (mm)

② Volume of end plate

Ve = μ X D3 X 2

D : internal diameter of reservoir (mm)
μ : experience coefficient = 0.13385

③ Total volume of reservoir

① + ② = ℓ