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Fuel Comparison Chart
Fuel Comparison Chart
Physical Properties
Normal Atmospheric State
Boiling Point (in °F):
Heating Value:
Density***
Weight†
Octane Number:
*
LHV (Low Heat Value) is the more realistic rating.
**
Gross Heat Value does not consider heat lost in the form of water during combustion.
*** Density is given in "Cubic Feet of Gas per Gallon of Liquid".
†
Weight is given in "Pounds per Gallon of Liquid".
Size of Propane Tank Required at Various Temperatures When Kept at Least
Half Full
Given the gas withdrawal rate and the lowest average winter temperature, an installer can specify the required LP storage
tank size:
Required Propane Tank Size (Lowest Average Winter Temperature), in Gallons
Withdrawal Rate
50 CFH
100 CFH
150 CFH
200 CFH
300 CFH
Briggs & Stratton Power Products Home Generator System
Initial
End
BTU per gallon (Net LHV*)
BTU per Gallon (Gross**)
Cubic Feet (Gas)
Research
Motor
32°F
115
250
300
400
750
Installation Manual
Butane
Propane
Gas
Gas
32
-44
32
-44
94,670
83,340
102,032
91,547
3,264
2,516
31.26
36.39
4.81
4.24
94
110+
90
97
20°F
10°F
0°F
115
115
250
250
250
400
400
500
500
500
750
1000
1000
1500
2000
20
Natural Gas
Gas
-259
-259
63,310
1,000
57.75
2.65
110+
-10°F
-30°F
-40°F
250
400
600
500
1000
1500
1000
1500
2500
1200
2000
2500
2500
4000
5000
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