2006-10-27 20:45:07 · 4 answers · asked by blablck 1 in Science & Mathematics ➔ Engineering
Okay, maybe this will help. Its about 1.08 BTU/ hour per CFM per degree F temperature change you want to achieve.
2006-10-28 04:36:22 · answer #1 · answered by Roadkill 6 · 0⤊ 0⤋
CFM is cubic feet per minute, that is a volume of air. BTU is a unit of heat. To find out how many BTU you need, one would need to know how much you want the temperature of that much air to change (what is the initial temperature, what is the final temperature).
However, a gas furnace rated at 75000 BTU per hour usually is meant to deliver 1200 CFM, so I guess you can scale up that value and get a heating capacity of 100000 BTU per hour, but again, that depends if you are trying to heat yourself in Alsaka or in north California.
2006-10-28 03:57:16 · answer #2 · answered by Vincent G 7 · 0⤊ 0⤋
Vincent, I think the 1200 CFM number for a gas furnace is irrelevant, since it refers to the flow rate of natural gas (not air).
2006-10-28 08:54:49 · answer #3 · answered by genericman1998 5 · 0⤊ 0⤋
To do what? air does not require BTU's unless one is talking about heating or cooling.
2006-10-28 03:56:21 · answer #4 · answered by arbiter007 6 · 0⤊ 0⤋