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Cahyo Wibowo / JOJAPS – JOURNAL ONLINE JARINGAN PENGAJIAN SENI BINA
The stage-2 regulator uses the Belgian / Fisher 627 Regulator as shown in Figure 11.

Figure 11. Regulator Belgas P627 [8]

The equation used to calculate the gas flow rate uses the following equation:

 Bernoulli Equation [6]:
1 1 (1)
2
2
+ + ℎ = + + ℎ
1
1
2
2
2
1
2 2

 Reynold Number [6]
v. D ρ. v. μ (2)
Re = =
D
u u

Where :
Re : Reynold number
D
v : velocity m/s
D : Internal Diameter m
3
ρ : Density Kg/m
μ : Dynamic Viscocity Kg.m/s

 Gas flow Calculation [6]
C √∆P × P (3)
Q = v 2
g
√ s g

 Coeficient Velocity Calculation (Cv: coeficient of velocity) [6]
Q × 2 √S g (4)
g
C =
v
P 1

The equations used to calculate the Joule Thompson Effect coefficient are as follows [7]

ϑT 1 ϑv (5)
μJT = ( ) = [T ( ) − v]
ϑP h c p ϑT p

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