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Idiomas disponibles
Fuel Consumption
Estimated fuel supply requirements at half and full load for
natural gas and LP vapor fuels are shown below.
Recommended Energy | LP Vapor
Natural
Content of Fuel
Gas
Heating Value:
BTU per gallon (gross**)
91,547
Cubic feet (gas)
2,000
1,000
LP Vapor (Propane)
20kW
16kW
15kW
Cu Fi/Hr
135
113
109
Full Load | Gal/Hr (liquid)
3.75
3.14
3.03
BTU/Hr
337500
282500
272500
Cu Fi/Hr
109
96
90
3/4 Load | Gal/Hr (liquid)
3.03
2.67
2.5
BTU/Hr
272500
240000
225000
Cu Fi/Hr
83
71
68
1/2 Load | Gal/Hr (liquid)
2.31
1.97
1.89
BTU/Hr
207500
177500
170000
Cu F/Hr
56
53
51
1/4 Load | Gal/Hr (liquid)
1.56
1.47
1.42
BTU/Hr
140000
132500
127500
Cu F/Hr
40
4Q
4Q
exercise | Gal/Hr (liquid)
ian
wn
ian
BTU/Hr
100000
100000
100000
Natural Gas
6 kW
15kW
14:4. kW) | (13.5 kW)
Cu Ft/ Hr
244
240
BTU / Hr
244000 | 240000
Cu Ft/ Hr
2
BTU/Hr | 240000
Cu Ft/ Hr
187
BTU/Hr |
187000 |
1
Cu Ft/ Hr
135
12
119
BTU/Hr | 135000 | 125000 | 119000
Cu Ft/ Hr
99
99
99
BTU / Hr
99000
99000
99000
Full Load
3/4 Load
1/2 Load
1/4 Load
Exercise
Fuel Pressure
Both LP vapor and natural.gas fuel supply pressure at the
generator's fuel inlet port should be between the following
levels at full load with.allegas appliances turned on
and operating.
° NG is 6-7" W.C.
° LP isd yt?' W.C.
Ensure ihatall gas line shutoff valves are OPEN and that
adequate fuel pressure is available whenever automatic
Operation is desired.
Power Loss
Air density is less at high altitudes, resulting in less available
engine power. Specifically, engine power will decrease 3.5%
for each 1,000 feet (300 meters) above sea level and 1% for
each 10° F (5.6°C) above 77°F (25°C). Make sure you and
your installer consider these factors when determining total
generator load.
Fuel Pipe Sizing
There are numerous on-line or otherwise-published
references for fuel pip sizing. For example, NFPA 54-Natural
Fuel Gas Code, 2006 (Item #: 320-6031 -06) is a
common resource.
The installer should consider the specific gravity of gas and
compensate for a nominal amount of restriction from bends,
fittings, etc. If an unusual number of fittings, bends, or other
restrictions are used, refer to federal and local codes
for guidance.
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