VISTA AC

Single AC unit serving 2-story 1,200 sq ft paint store show room. Done on a 103 degree day. Immediately dropped interior air temp 7 degrees. Next day, also 103 degrees. Manager called and said it was 12 degrees colder than before the RCC was applied to the AC unit.

Views: 61

Comment

You need to be a member of Home Energy Pros Forum to add comments!

Join Home Energy Pros Forum

Comment by Hal Skinner on August 7, 2014 at 11:41pm

In most cases, water and a brush.  If the surface area is filthy, oily, greasey, what works best is liquid tide with bleach.  We will wet down the surface area, AC unit, metal roof etc, spray on liquid tide with bleach from a garden sprayer, scrub it, rinse it, let it dry.   100% environmentally friendly.  Once dry, spot prime any rust.  Spray or roller on the RCC.  Cooling effect is immediate.

Comment by Eric Kjelshus on August 7, 2014 at 9:35pm

what do you clean it with?  Most RTU are just nasty - grease from Kitchen to concrete  dust to road tar to bird dropping 

Comment by Hal Skinner on August 7, 2014 at 6:20pm

Our RCC is such a good sealant it is used as an encapsulant material for asbestos.  But, that had no bearing on this application.

 

I apologize for lack of good editing on here.  My vision is bad enough it is very difficult.

Comment by Hal Skinner on August 7, 2014 at 5:43pm

Hi Eric,

I did this one myself.  I cleaned it, masked off all the ID plates and stickers and painted on our RCC.  Nobody did anything with the outside air intake.

Our RCC has Solar Reflectivity of 0.83

                                 Emissivity of  0.90

Here is how that was explained to me by a couple of folks from energy labratories.

Using our numbers;  83% of the sun's heat energy is reflected away from the material.

This leaves 17% that actually enters the surface of the material.

Of THAT 17%, 90% of that is emitted back into the atmosphere.

Do the math and that leaves 1.7% that actually goes past  the RCC and enters the building.

 

If your numbers are referring to ther 'coloor spectrum, I will give an example of a white RCC does vs standard white paint.

@00,000+ sq ft metal building.  Egg processing pl;ant in Texas.  Metal roof was white from the factory (Baked enamel?)  Walls were a light yellowish tan from the factory.

First thing cpoated was the roof..  That immediately dropped the surface temperature from 196 degrees down

to 110 degrees.  It also dropped the attic air teperature by 60 degrees.  Iy was a 108 degree day.

The surface temperature of our RCC will alway be within 5 degrees of whatever the ambient air teperature is at that moment..

IT AINT PAINT!  :)

 

Comment by Eric Kjelshus on August 7, 2014 at 3:59pm

I have seen roof top units leak 45% on both supply and return.   I have see the slitter between supply and return just rot with leaking air- conditioned air hits hot air than rains.   Yours is more just color than sealing, black is 93% and white is 7% solar heat pick up.  How much of that is from closing the outside air off?

Latest Activity

Dannie Jackson liked Barry NewDelman's discussion Help your Clients save, THEN do what you do best
27 minutes ago
Dannie Jackson replied to Barry NewDelman's discussion Whats the Consensus of this group Define "Energy Efficiency" in the group Energy Efficient Design
"Design wise I would say that energy efficiency is defined by the Btu / square foot.  This is…"
30 minutes ago
Dannie Jackson joined Chris Laumer-Giddens's group
Thumbnail

Energy Efficient Design

Energy efficiency starts at the drafting table...How architects and designers can help buildings…See More
30 minutes ago
Dannie Jackson liked Chris Laumer-Giddens's group Energy Efficient Design
56 minutes ago
Dannie Jackson posted a blog post
2 hours ago
Dannie Jackson liked Home Performance Coalition's blog post Building a Market for High-Performing Homes
2 hours ago
Summer Reyes posted a blog post
17 hours ago
Oliver Periman is now a member of Home Energy Pros Forum
yesterday

Photos

  • Add Photos
  • View All

© 2017   Created by Home Performance Coalition (HPC)   Powered by

Badges  |  Report an Issue  |  Terms of Service