RAJASTHAN STATE GAS LIMITED
(A Joint Venture Company of RSPCL & Gail Gas Limited)
Conversions
Heat Conversions
Basic Units:
1 Joule = 0.24 Cal
1 Calorie = 4.156J = 0.004 Btu
1 Btu = 1055 = 252 Cal (0.252 Kilocalories)
 
Multiples
  MJ Kcal Therm Th KW H
1 240 0.01 0.24 0.28
1 Therm 106 25.200 1 25 29
1 Thermie (Th) 4.2 1,000 0.04 1 1.16
1 Kilowatt Hour (KWH) 3.6 860 0.03 0.86 1
 
Standard Reference Fuel and Equivalent
  106Btu 106Kcal Boe Toe T.c.e Ft3Gas M3Gas KW H
1 Barrel oil Equivalent 5.8 1.46 1 0.14 0.21 5,800 155 1,700 (Boe)
1 Tonne Equivalent 27.3 6.88 4.7 0.65 1 27,300 725 8,000 (Tce)
Tonne oil Equivalent 42.3 10.66 7.3 1 1.55 42,300 1,120 12,400 (Toe)
 

Base on GCVs for:     

Natural Gas            : 9,500 Kcal/SM3
Coal                        : 6,880 Kcal/Kg
Oil                           : 10,660 Kcal/Kg

 
Pressure Conversions
  Bar Atm Kgf/cm2 lbf/in2 Mn Hg in Hg N/M2
(Pascal)
1 Bar 1 0.987 1.02 14.5 750 29.5 100,000
1 Standard atmosphere 1.013 1 1.03 14.7 760 29.9 101,325
1 Kilogram force per square centimeter (kgf/cm2) 0.981 0.968 1 14.2 736 29.9 98,066
1 Pound-force per square inch (lbf/in2 or psi) 0.069 0.068 0.07 1 52 2.0 6,895
 
Volume Conversions
  Ft2 Imp gal US gal US bbl Litres
1 cubic meter 35.31 220 264 6.29 1,000
1 Imperial gallon 0.16 1 1.2 0.03 4.55
1 US gallon 0.13 0.83 1 0.02 3.79
1 US barrel 5.6 35 42 1 159
1 Cubic foot 1 6.23 7.48 0.18 28.3
 
Temperature Conversion Formulae
oF = 9/5oC+32
oK = oC + 273.15
oR = oF + 460
 
Frequently used Conversions in the Gas
1 SCM (Standard Cubic Meter) = 1 cubic meter@ 1 atmosphere of pressure and 15oC temperature
1 Cubic meter = 35.3 cubic feet

1 BCM (Billion Cubic Metre/year of gas

(consumption of production) 1 TCF

(Trillion Cubic Feet) of Gas Reserve

= 2.8 MMSCMD

=4 MMSCMD

2.74 MMSCD (365 days/year)

= 3.88 MMSCMD (100% Recoverable for 20 years @ 365 days/annum)

1 MMTPA of LNG = 4 MMSCMD = 3.60 MMSCMD (Mol. Wt. of 18 @ 365 days/annum)
1 MT of LNG = 1300 SCM 1314 SCM (Mol.Wt. of 18)
CGV (Gross Calorific Value) = 10,000 Kcal/SCM  
NCV (Net Calorific Value) 90% of GCV  
1 million BTU 25.2 SCM  
1 million BTU of energy is released by 25.2 SCM of gas with GCV of 10,000 Kcal/SCM
1 million US$ Rs.5.4 CR.
1 US$/MMBTU US$ 54/100 SCM
Rs. 2160/ 1000 SCM
(Exchange rate 1 US$=Rs. 54)
Gas required for 1MW of power Generation = 4500 SCM per day (SCMD) 4400 (Heat rate of 1850 Kcal/kWh)
Power Generation from 1 MMSCMD Gas = 220 MW  

Specific Gravity of gas

Density of gas

= 0.65

=0.75 kg/SCM

0.62 (MW of gas/MW of air, MW of gas-18
0.76 (MW of gas-18)
 
 
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