pre-alpha

SF6 / N2 gas mixture calculator

SF6 / N2 gas mixture calculations based on simplified interpolation of Beattie-Bridgeman equations. An estimation accuracy of ± 5% to be considered.
Check entered values: p = 1...10 bar, %SF6 = 0...100, V = 1...10000 m3

Specifications

Filling pressure
bar abs
SF6 percentage
%
GC volume
m3

Calculation results

Gas density
kg/m3
SF6 weight
kg
N2 weight
kg

N2 [%]
0
100% SF6 equivalent density [kg/m3]
0
SF6 fraction density [kg/m3]
0
SF6 to SF6/N2 density ratio
0

Estimated liquefaction point [°C]
-25

Experimental

Gas compartement
Initial filling
p @ +20°C [bar abs]:
Gas conditions
Temperature [°C]:
Gas state
SF6 density [g/l]:
p @ T [bar abs]:
Liquefaction @ [°C]:
Pressure gauge @ initial filling
1st stage alarm [kPa]
0

2nd stage alarm [kPa]
0

Pressure rising [kPa]
0

Pressure gauge @ ΔT1
ΔT1 [°C]:

pG-pGC [kPa]:
0

stage 1
stage 2
rising

Pressure gauge @ ΔT2
ΔT2 [°C]:

pG-pGC [kPa]:
0

stage 1
stage 2
rising

General information

To-Do

Pressure / density tables calibraion

Gas tables export

Estimator / interpolator improvemen

Add gas monitoring lines to chart

Gas moisture calculation

Refactoring strongly recommended

SF6 general information

Critical temperature: 45.5 °C

Critical pressure: 37.59 bar (3.759 MPa)

Sublimation point(at 1,0133 bar): -63,9 °C

Melting point (at 2,26 bar): 50,8 °C

Beattie-Bridgeman equation for SF6:

Gas pressure/density tables
Calibration equations
p
bar abs
@T
°C

d interpolated
g/l
p(Beattie-Bridgeman)
bar abs
Δp
%

Developed by: Anton Zvonarov 2016

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