Sizing of A/C
Sizing of A/C
(OP)
Just a question that is more out of curiousity. When sizing air conditioners for houses how do you determine the heat(cooling) load? Is it simply xxx btu per sq ft?
Can anyone point me to any online guidance for this sort of thing?
Can anyone point me to any online guidance for this sort of thing?





RE: Sizing of A/C
M1401.3 Sizing. Heating and cooling equipment shall be sized based on building loads calculated in accordance with ACCA Manual J or other approved heating and cooling calculation methodologies.
Don Phillips
http://worthingtonengineering.com
RE: Sizing of A/C
Read an ASHRAE fundamentals volume.
The trace program occupies 3.2 gig on my hard drive....this is not a simple problem.
RE: Sizing of A/C
TTFN
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RE: Sizing of A/C
Cheers.
RE: Sizing of A/C
RE: Sizing of A/C
One would expect that unless the customer reveals an abnormal occupancy condition, like a server farm, that there's be plenty of capacity for most situations. Therefore, they probably have a few tiers of capacity densities for 95% of the applications, and will only crank numbers if the application is grossly out of bed.
TTFN
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RE: Sizing of A/C
RE: Sizing of A/C
You can do the detailed calculations and come up with the exact load. Then, you'll apply a design safety factor to ensure that your client won't sue you, and, guess what? You'll be a hair's breadth from the standard ROT.
TTFN
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RE: Sizing of A/C
If all you need is rule of thumb, you don't need an Engineer.
RE: Sizing of A/C
RE: Sizing of A/C
Obviously, most of us who are mere mortals tend to need the calculations to get the "correct" answer. There are a few souls who can do the decrements and increments in their heads in a blink of an eye to tell you a non-standard value that works.
I'd would certainly agree with Chris that having an ROT to gauge your calculations makes lots of sense. Every good engineer needs to be able to check his results independently.
TTFN
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