LP gas btu/# ?

[renaissanse man]

How many btu's per pound of LP? This has to do with propane grills.

[spotts]

http://www.flameengineering.com/Propane_Info.html

PROPANE DATA
Properties of Propane:
Chemical Formula
C3H8
BTU per Gallon (Vaporized)
91,690
BTU per Pound
21,591
Weight per Liquid Gallon
4.23
Vaporization Temperature
–44°F
Specific Gravity - Vapor (Air=1)
1.53
Specific Gravity - Liquid (Water=1)
0.51
Vaporization Rate (Liquid to Vapor)
272:1
Combustion Data :
Limits of Flammability, %of gas in air
2.3% to 9.5%
Air required to burn 1 Cu Ft Vapor
23.5 Cu Ft
Oxygen required to burn 1 Cu Ft Vapor
4.9 Cu Ft
Ignition Temperature
920-1029°F
Optimum Flame Temperature
3500°F
Vapor Pressure at 0°F
28 PSI
Vapor Pressure at 70° F
122 PSI
Vapor Pressure at 100° F
190 PSI

I googled this.

[renaissanse man]

Thanks. I could have googled it, but I wanted the rest of the class to benefit from it too, plus I like to make conversation like oroy. :)

[coordinatesales]

So a common 30# tank would have about 647,730 BTU's if my math is correct?