Page 111 - Pressure Vessel Design Manual

92 Pressure Vessel Design Manual

Atmospheric Tank Proportions

K1 =- 2d
I R
b
Ka =-
a

+--+ c1=2 In (1 +/q

2
Jl -K; (1 -,/1 -K1
‘d Flat Elliptical Ends
Ellipsoidal Heads Note: For 2:l S.E. Heads, C, = 2.76 and K, = 0.5.

Table 2-1 7
Optimum Tank Proportions
. Case Optimum Proportions a
Volume
Cylinder with flat ends

L=D 2n~3

I Cylinder with ellipsoidal heads

-~
L = R(CI + 4K1)

~~ ~
Cylinder with internal ellipsoidal heads
L=R(C* +4KI)

Cylinder with internal hemi-heads
@ +-& L=8R 6.66nR3

Cylinder with conical ends h = a9R
0 r+ 1.5nR 3 !
-
L = a9R
L
:
Cylinder with internal conical ends
h = a9R 3
2.68nR
L = 3.281
I Elliptical tank with flat ends ~
~~