BTU Question

scrook_2

Right.

2200 gallons of water at 8.34 lbs/gallon is 18,343 lbs of water.

Water has a specific heat of 1 BTU/lb°F, so for every degree you increase its temperature you'll store:

(1 BTU/lb°F)*(18,343lb)*(1°F) = 18,343 BTU

In your case you're raising the temperature 60°F (from 120° to 180°) so you have:

(1 BTU/lb°F)*(18,343lb)*(60°F) = 1,100,580 BTU -- rounding off that's 1,100,000 BTU, you're not missing a thing!

martin

BTU Question

I'm doing some math for a future project for myself. I'm thinking of putting in a tank for a wood boiler, cap would be about 2200 gal. If my working range is say 60 degree 120 -180 how many BTUs can I stuff in there, I get 1,107,176 is this right or am I missing something.

Andrew Hagen_2

BTU Storage

You are correct assuming that the tank is 120°F when you start the wood boiler up.

martin

Thanks

Thank you for the verification, the 120 degrees was the low threshold on where I thought I would have a usable temp for heat exchange Ihope to burn hot and let it go out to avoid creosote.

Canuck_3

Damn!

No wonder I always get it wrong - up her in Canada we have lighter water - it only weighs 6.24 lb/gal.....no wait.....I think that we have a larger gallon, or is it that we're using metric liters now? Never mind.