Gen. Fuel Rules of Thumb 2 [RE-wrenches]

[Travis Creswell, Ozark Solar]

Gang,

Found my old "Pocket Reference"
It says

231 Cu. Inches per US liquid gallon
.13368 Cu. Ft pr liquid gallon


kW = 3409.5 BTU's 
1 HP = .746 kW
Horsepower hour = ~2550 Btu's
So a 16 hp motor is going need around  40,800 BTU's/hour ???
If we add in a 30% eff factor for Internal Combustion engines that takes us
to a more realistic 136,000 Btu's hr.

My local propane supplier tells me @60F
91,690 BTU's per gallon of propane
21,591 BTU's/lb
2,516 BTU's Cu. Ft

A 16 hp motor will produce 12.3 kW  (16x.746).  Although I have seen several
20 hp motors on 10 kW generators.

136,000 BTU's/91,690 BTU's in a gallon of propane = 1.48 gallons per hour.  

Travis Creswell
Ozark Solar





- - - - - - -
To send a message to the list use: <RE-wrenches at topica.com>

To view an archive of previous messages go to: <http://www.topica.com/lists/RE-wrenches/

To unsubscribe send an email message to: <RE-wrenches-unsubscribe at topica.com>

To check out who the other RE-Wrench participants are, go to <http://www.mrsharkey.com/wrenches/>

Hosted by Home Power magazine: <http://www.homepower.com>

for info contact: <michael.welch at homepower.com>
___________________________________________________________
T O P I C A  The Email You Want. http://www.topica.com/t/16
Newsletters, Tips and Discussions on Your Favorite Topics