ReplyThat's the formula you'd use to find how much ventiliation [exhaust] you need in something like a generator room. The air quantity is based on how hot you can let the room get.
Regular Guest
I'm currently enrolled in an HVAC apprentice program and as a bonus assignment, the instructor gave us a formula and asked us to find its meaning and application.
Try as I might though, I couldn't find anything in my books or on the internet on this formula.
Does anyone here have even a general idea what this formula is and what it's used for?
Q =
q
--------------------
(Tr-To)(60P Cp)
Q = Ventilation Rate - CFM
q = Room Heat - Btu/hr
Tr = Allowed Room Temp - Farenheit
To = Outside Air Temp
P = Air Density - Lb M/Feet cubed
Cp = Specific Heat of Air = 0.24 Btu/lb M Farenheit
Professional Member
That's the formula you'd use to find how much ventiliation [exhaust] you need in something like a generator room. The air quantity is based on how hot you can let the room get.
"If I had my life to live over again, I'd be a KA." - Albert Einstein
It's later than you think.
Banned
try the ASHRAE handbook(s)...it's ALL in there.
Regular Guest
ralphtheplumber
Buy a guy a fish and you feed him for a day
teach him how to fish and you feed him forever
what I am asking you is this : Make us work for the answer a bit. If all we have to do is post a class assigned question and get an answer , just like that , we are going to need you to take our tests for us also
Professional Member
Sell a man a fish and you feed him for a day.
Teach a man to fish and you ruin your market share.
(you'll also learn that latter on in life.)
Professional Member
You must have missed the part where he said:Originally posted by ct2
what I am asking you is this : Make us work for the answer a bit. If all we have to do is post a class assigned question and get an answer , just like that , we are going to need you to take our tests for us also
Please note that he's not asking for diy advice, or anything else that's likely to get him into trouble. Now that he knows what the formula is for, he can go figure out what it means and finish his assignment.Originally posted by jgman
Try as I might though, I couldn't find anything in my books or on the internet on this formula.
"If I had my life to live over again, I'd be a KA." - Albert Einstein
It's later than you think.
Regular Guest
No i didnt miss that part , and I appricate the answer that you gave him ...as a matter of fact I got my book out after reading your answer to look it up myself
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