Fire box dimensions

[HuskyMike]

Any one know how to measure the square feet of a fire box?

I did length x height x width but it didn't seem correct.

thanks

 

[ericjeeper]

That is correct for square footage.. But you need CUBIC footage. width x length x height

 

[ericjeeper]

my firebox is a cylinder. 48 inches long and 30 inches round. Therefore I have a firebox containing 78.5 cubic feet.

 

[Hlakegollum]

Yes, height by width by length. Measure in inches and convert to feet by dividing each number by 12 first, then multiply them all out (I did spend 6 years in engineering school. LOL)

 

[Lloyd H]

cylindrical fire box

A 30 inch cylinder 48 inches long contains 19.635 cubic feet. ie. pi x radius squared x length radius = 1.25 feet length = 4 feet

 

[HuskyMike]

Yes, height by width by length. Measure in inches and convert to feet by dividing each number by 12 first, then multiply them all out (I did spend 6 years in engineering school. LOL)

Huge help thank you.

so that gives my fire box 1.5 cubic feet.

So if I upgrade from 1.5 to a 2.0 or 2.1 square foot fire box, do you guys find it as a big difference in heat output an burn times?

 

[ericjeeper]

A 30 inch cylinder 48 inches long contains 19.635 cubic feet. ie. pi x radius squared x length radius = 1.25 feet length = 4 feet

LOL You have obviously never tried to fill it and keep it full. Yes you are correct 19.625
It will make a heaping wheel barrel full of wood disappear overnight.

 

[Lloyd H]

cubic feet etc.

I guess that why there is so much contrversy over a "CORD" of wood LOL

 

[ericjeeper]

I am no math genius

I used the diameter as opposed to the radius... Big difference aye?
If I had a 75 cubic feet firebox maybe I could get 24 hour burns like a lot of these guys here get.