Volumetric Air/Fuel required for 100kbtu/hr
Probably been asked and answered many times for but for youburner engineers:
- At stoichiometric burn, how many cubic feet per minute ofair and natural gas are required to produce 100kbtu/hr?
- Same question for Propane.
- In practice, what thermal efficiency is commonly achieved?
According to numbers found on wikipedia and engineeringtoolbox.com:
For natural gas, the stoichiometric ratio is 9.7:1 by volume and the calorific value is 950-1150 btu/ft³
For propane, 23.9:1 and 2550 btu/ft³.
As for efficiency, try a search of this site, I seems to recall a thread regarding this a couple years ago.