Holmes On Homes- Holmes & H-VAC Guy both read their anemometers as showing CFM
Holmes On Homes; last night again Holmes & the H-VAC Guy both read their anemometers as showing CFM Volume when they were showing FPM Velocity. (Rerun?)
It was a floor diffuser, didn't get a good look at it but was either a 4X10 or 4X12.
Initially said it was delivering 410-cfm/which was FPM; Hart&Cooley show a 4X10 as .17-Ak Free-air-area, which is 81.6-CFM.
Final was stated as 671-cfm which was actually FPM; .17Ak * 671-FPM is 114-CFM.
A 4X12 yields .195-Ak * 480 is 93.6-CFM; 671-FPM * .195-Ak is 130.8-CFM.
Ak is free-air-area of the diffuser.
The FPM Velocity would be astronomical if that .195 or .17-Ak were flowing 671-CFM,
I wish they would get it right from here on... Please...
Last edited by udarrell; 08-15-2011 at 02:53 PM.
Not an expert but he plays one on TV.
Whew, that register would have been whistling at 671 cfm! It would have sounded like a jet engine.
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Yeh, like Alec Baldwin 'played a pilot' before.
Originally Posted by btuhack
hey darrel, good catch, that's why you make the big bucks, holmes, comes across as a guy who never makes a mistake, he's the only guy in the world, that can do it right, and even if there isn't a problem, he'll find it. it's good, he's trying to educate the publlic, but again, the dude comes off, as a know it all! and if he bid originally on most of those jobs on T.V., he's never get them jmho!
I saw the same show and was looking for a place to respond to Holmes about this error. Every time I see them measuring airflow it has always been showing fpm and not cfm. I can understand Mike not knowing but the hvac company is clueless also. They also do not use the meter correctly for measurements. No traverse done on the register.
Also every time the HVAC guy was using Mastic, Mike said he was taping it up. Yeah also when i saw those numbers which where suppose to be cfm readings, I was thinking forget the meter, you should be able to hear that with that much air flow.
homes need to stick with driving nails
I like Holmes, he's okay & I enjoy his programs, however, I wish they would do a whole lot better when it comes to H-VAC content in their programs!
Darrell - you should offer up your services to him - you certainly have the chops!
Seriously, you never know, he may be looking for someone that actually knows this stuff, as opposed to the current "pro" he has has following him around.
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Energy efficient and economical to operate are not synonyms
I like the show and watch it often. However I always have said, When money is not the issue then of course you can do everything "RIGHT". Why don't they tell how much the job would cost the homeowners if they actually had to pay the bill.
I think in that episode, he and his right hand man said it would have cost 50K to do all they did.
Originally Posted by countrykid78