Laju massa air, F = 152,107 kgjam Densitas uap jenuh air, ρ = 1000 kgm
3
40
o
C, 1 atm Space Time
uap air dalam vapour space , t = 0,25 jam
Volume uap, Vf
Faktor kelonggaran = 20
Volume tangki, Vt = 1,2 x Vf
= 1,2 x 0,038 = m
3
ii. Dimensi vapour space
Perbandingan tinggi tangki dengan diameter tangki H : D = 1 : 1 Volume Silinder
= π4 x D
2
H = π4 x D
3
Volume tutup Vh ellipsiodal =
π4 x D
2
Hh =
π4 x D
2
16 D =
π24 x D
3
Vt = Vs + Vh Vt =
π4 x D
3
+ π24 x D3 Vt =
7π24 x D
3
Brownell Young, 1959
Diameter tangki =
= m =
in
Tinggi silinder H = D =
m Tinggi tutup ellipsiodal Hc
= 16 x D = 16 x 0,368 m
= m
Diameter tutup = D =
m 0,046
Tutup tangki berbentuk ellipsiodal dengan rasio axis major terhadap minor 2 : 1, sehingga : tinggi head Hh = 16 x D Brownel Young, 1959
0,368
0,368
0,061 0,368
14,48277
3
7 π
x0,046 24
3
7 π
Vt 24
3
m 038
, 1000
0,25 x
107 ,
152 t
. F
Diameter liquidcrystal channel, Dn = 0,15 D
= 0,15 x 0,368 = m
Tinggi conical section, Hn = 12 x D -Dn tan
θ =
m
b. Design LiquidCrystal Space i. Volume liquidcrystal space
Sudut elevasi, θ
= 30
o
Laju massa liquidcrystal , F =
kgjam Densitas liquidcrystal
, ρ =
kgm
3
Space time dalam liquidcrystal space , t
= 1 jam
Volume liquidcrystal , Vf =
=
Faktor Kelonggaran = 20
Volume tangki, Vt = 1,2 x 0,347 =
m
3
ii. Dimensi vapour space
Perbandingan tinggi tangki dengan diameter tangki H : D = 1 : 1 Volume Silinder
= π4 x D
2
H = π4 x D
3
Volume tutup Vh ellipsiodal =
π4 x D
2
Hh =
π4 x D
2
16 D =
π24 x D
3
696,176 2.005,586
0,417
Tutup tangki berbentuk ellipsiodal dengan rasio axis major terhadap minor 2 : 1, sehingga : tinggi head Hh = 16 x D Brownel Young, 1959
0,055
0,090
3
7 π
x0,04624
3
m 347
, 2.005,586
1 x
696,176 t
. F
Vt = Vs + Vh Vt =
π4 x D
3
+ π24 x D3 Vt =
7π24 x D
3
Brownell Young, 1959
Diameter tangki =
= m =
in
Tinggi silinder H = D =
m Tinggi tutup ellipsiodal Hc
= 16 x D = 16 x 1,650 m
= m
Diameter tutup = D =
m Diameter sambungan, Dl
= 0,15 D = 0,15 x 1,650 =
m Tinggi conical section, Hn
= 12 x D -Dn tan90- θ
= m
iii. Panjang LiquidCrystal Channel
Panjang LiquidCrystal Channel, L = 0,7 x Hn
= m
iv. Tekanan Desain
Tinggi level cairan, Hf = VfVt x H + Hc
= 0,347 0,417 x 1,650 + 0,275 =
m P
hidrostatik
= x g x Hf
= 2.005,586 x 9,8 x 1,604 =
Pa =
kPa P
O
= Tekanan Operasi = 1 atm = 101,325 kPa
Faktor Kelonggaran = 20
P
desain
= 1 + 1 x P
hidrostatik
+ P
O
1,650
1,650
0,275 64,94274
1,650
0,138
1,309
0,916
1,604
31.520,895 31,521
3
7 π
Vt 24
3
7 0,417
x 24
