Date registered: Jan 2014
Vehicle: 2008 AMG CLK63 Conv., 2012 R350 4-Matic, Wife's 2015 C300 sedan
Location: Cypress Texas
Mentioned: 7 Post(s)
Quoted: 2517 Post(s)
Propane is C3H8. Methane is CH4. Pipe gas is methane.
So if I've got this right the oxidation equations are:
C3H8 + 7O2 = 3CO2 + 4H2O
CH4 + 3O2 = CO2 + 2H2O
Upshot is propane burners have to let in half as much (mole for mole) gas or thereabouts as natural gas ones, or put the other way, twice as much air, which is why you need to change the nozzles or burners for natural gas. The real danger comes when you switch the other way: too little O2 leads to carbon monoxide.
"Semper In excretio, solum profundum variat" - unknown
They called me mad, and I called them mad, and damn them, they outvoted me" - Nathaniel Lee