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Removing Hot Air from Vaulted Ceiling

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Removing Hot Air from Vaulted Ceiling Todd 07-27-2006
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Posted by on July 28, 2006, 1:39 pm

>nicksanspam@ece.villanova.edu wrote:

>>Aim the thermometer at a piece of paper...
>
> Why paper? Do you get false readings otherwise?

Maybe. You can't read an air temp with an IR thermometer, because air
is transparent to low-temp IR radiation. If you aim an IR thermometer
at an indoor surface, you will get the temp of the indoor surface, which
may be warmer or cooler than the air temp. One way around that is to
aim it at a piece of paper, ideally after waving the paper in the air
to ensure it's close to the air temp, even if other surfaces exchange
radiant energy with the paper.

Nick


Posted by Stormin Mormon on July 28, 2006, 10:31 pm
RTFM. Some infared thermometers don't read well off shiny surfaces.
Mine suggested a hit of masking tape,a nd then read the masking tape.

--

Christopher A. Young
You can't shout down a troll.
You have to starve them.
.

On 28 Jul 2006 05:34:07 -0400, nicksanspam@ece.villanova.edu wrote:

> ...
>
>Aim the thermometer at a piece of paper...
>
>Nick

Why paper?
Do you get false readings otherwise?

What should I beware of?




Posted by on July 28, 2006, 12:40 am
"Todd" wrote:

>Hi,
>
>
>I have a two story house with vaulted ceilings throughout. I had AC
>put in last year, but the upstairs doesn't really cool down. The front
>of the house has the biggest windows, and is West Facing, so it gets
>all of the afternoon sun. Last year, I also replaced all of these
>windows with much more efficient windows.
>
>However, I can't get it below 80 degrees upstairs. And this can often
>be when its cooler outside.
>
>In examining my options, I noticed that I have NO vents on my roof. I
>have all vaulted ceilings, so I don't have an attic. I do have some
>soffit venting on either side of the slope of my roof.
>
>Can I put turbine vents on the roof? Will this make a difference in
>temperature for those upstairs rooms if I can cool the space between
>the ceiling joists and the rafters? Again I have NO ATTIC.
>
>
>Really, what I'm looking for is a way of removing that hot air from the
>vaulted ceilings in the summer.
>
>Any suggestions? Turbine vents appear to be an easy solution. Will
>cooling the space between the roof and the ceiling help in cooling the
>room below it?
>
>
>- Thanks in advance,
>
>Todd

It is imperative you figure out a way to pull return air from the
highest point possible.

While you are doing that, incorporate this in as well:

http://www.icynene.com/

http://www.foampros.com/Icynene_Specification.html

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