Benefits of Propane over LPG
BENEFITS OF PROPANE OVER LPG
S.No. BENEFIT VIRTUE PROPANE LPG
1 SAFER FUEL (oC) HIGHER AUTO IGNITION TEMPERATURE 468 365
2 HIGHER VAPOR OFF TAKE (oC) LOWER BOILING POINT -42.07 -0.5 TO -20
3 ELECTRICITY SAVINGS VERY LOW VAPORIZER REQUIREMENT LOWER BOILING POINT ALMOST ELIMINATES NEED OF VAPORIZER VAPORIZER IS REQUIRED
4 NO FREQUENT BURNER SETTING UNIFORM COMPOSITION PURE COMPOUND MIXTURE OF PROPANE AND BUTANE. COMPOSITION OF GAS VARIES WITH THE LIQUID LEVEL IN THE TANK.
5 QUANTITY SAVING HIGHER CALORIFIC VALUE 12034 KCAL/KG 11800 KCAL/KG
6 LESS EXHAUST LOSSES LESS AIR REQUIRED 01:24 01:32
7 LESS MAINTENANCE NIL SOOT CLEANER COMBUSTION LEADS TO LOWER MAINTENANCE MAINTENANCE HIGHER THAN PROPANE BECAUSE QUALITY VARIES WITH THE SUPPLIER
8 SUITABLE FOR COLD AREAS (oC) LOWER BOILING POINT -42.07 -0.5 TO -10
9 NO CONDENSATION IN THE PIPE LINE HIGHER VAPOR PRESSURE HIGHER V.P. OF PROPANE ELIMINATES CHANCES OF CONDENSATION OF GAS IN THE PIPE LINE CHANCES OF CONDENSATION ARE ALWAYS THERE WITH LPG
10 HIGHER TANKS AND SYSTEM LIFE NIL REACTIVITY OF PROPANE TOWARDS MS PROPANE IS NOT REACTIVE TO MS THE MAIL MATERIAL OF CONSTRUCTION OF TANK AND PIPE LINE FEW HYDROCARBONS LIKELY TO PRESENT IN LPG ARE REACTIVE TO MS.


Properties of PROPANE, BUTANE and LPG
PROPERTIES OF PROPANE, BUTANE AND LPG
S.No. Particulars Propane Butane LPG
1 Chemical Formulae C3H8 C4 H10 60%Butane,
40%Propane Mix
2 Max. Vapour Pressure Saturated in Kg/Cm2 22.66 6.32 16.87
At 65 deg C
3 Gross calorific value in Kcal/kg. 11900 11800 11840
4 Specific gravity (liquid) at 15 deg C Water =1 0.504 0.582 0.543
5 Specific gravity (vapour) at 15 deg C air=1 1.5 2.01 1.75
6 Ideal combustion Ratio (Air to Gas) 24 to 1 31 to 1 28 to 1
7 Flammability limits (Upper) 9.60% 8.60% 9.10%
8 Flammability limits (Lower) 2.15% 1.55% 1.90%
9 Ignition Temperature (oC) 493-504 482-537 488-502
10 Volume of gas produced per unit volume of liquid 274 233 250
11 Volume of air required to burn unit volume of gas 23 30 26
12 Volume of oxygen required to burn unit volume of gas 4.8 6.25 5.5
13 Max. flame temperature (oC) 1979.44 1990 1985
14 Volatility : evaporation temp. in 0C for 95(oC) by vol. at 760 mm Hg pressure max. -38 2 2
15 Boiling Points (oC) -45 -2 -22
16 Percent Gas in air for Maximum Flame Temperature 4.4 3.5 3.9
17 Limits of Flammability (Lower) 2.0 11.0 1.9 8.5 1.95 9.75
(% Gas in Gas /Air Mixture)
( Upper)


Comparison of various fuels

Product LPG Electricity HSD LDO FO Kerosene
Unit 1 KG 1 KWH 1 LITER 1 LITER 1 KG 1 LITER
Calorific Value in kcal/unit 11840 860 10500 10000 9500 10420
Fuel efficiency % 80 100 62 60 50 60
Effective CV PER UNIT 9472 860 6510 6000 4750 6252
(NEW DELHI) 34 5 30 27 20 28
Costing for 10000 kcal 35.32 58.14 46.08 45 42.11 44.79
Savings % by using LPG 64.62 30.49 27.42 19.22 26.81