HVAC vs Evaporative Cooling and It's Effects On Moisture Testing
Well I just found out this job I am bidding on has evaporatitive cooling AND HVAC.
You want to throw some shock values at the wood flooring I am going to install? Well this will do it in a pinch. Not to mention the changes in moisture dome testing. In order to test with a CaCl test I would have do it with each one (AC and evap)running at different times. I wonder what effect it could have on rh testing? Anyone out there know?
If you don't quite understand how an evaporatitive cooler (swamp cooler)works go to this site:
Now there is physics involved, dewpoints...what else..... psychrometrics and the like.
Go down the section number 4 (Performance)on the wikipedia.or link above and read that. Come back and explain it to me K?
My mother has one running right now cus she does not have AC. It's most likely not helping at all right now because the rh outside is 95% today! I think I will run over there with my hygrometer.
Last Edited 8/14/2008 3:05:56 PM
Stephen Perrera Posts: 823 Since: 5/27/2008
8/23/2008 7:01:34 PM
doing a little research and...
I finally found something. And low and behold it is from the trade magazine publisher BNP/ICS. Shocking I tell ya!
an anyone out there explain this in laymans terms?
I have this picture of events in my mind.
Consumer has had hardwood installed on concrete. Concrete has tested below the limit lets say 75% Rh. They have the evaporative cooler going and the dewpoint temp hits the limit. The wood is saturated to what level....lets say the dewpoint is 85 degrees. So the cooling effect has stopped working as the ambient air cannot hold any more moisture. Then the consumer cranks on the AC. Whats going to happen to the wood? Whats going to happen on the surface of the wood and warm concrete substrate if the ambient air temp is rapidly dropped to say 75 degrees? Is the installer going to be blamed? Is this going to effect the rh in the slab as well?
Is the water in the concrete going to move up or down?
Or maybe nothing is going to happen at all but dry out the wood! Or perhaps the wood will blow off the floor!
This is truly driving me crazy the more I think about it and theres millions of home in the southwest...AZ, NV, CA that use them.
Help.
Last Edited 8/23/2008 7:06:43 PM
Stephen Perrera Posts: 823 Since: 5/27/2008
8/23/2008 7:54:16 PM
No no no, it's all about the surface pressure, yeah thats the ticket, and what quality adhesive was used, acrylic or urethane? Yes? No?
