Bus Conversions dot Com Bulletin Board
October 25, 2014, 07:27:58 AM *
Welcome, Guest. Please login or register.

Login with username, password and session length
News: This BB is intended for the sole purpose of sharing conversion and bus related information among visitors to our web site. These rules must be followed in order for us to continue this free exchange of info. No bad mouthing of any business or individual is permitted. Absolutely no items for sale are to be posted, except in the Spare Tire board. Interested in placing a classified or web ad, please contact our advertising dept. at 714-903-1784 or e-mail to: info@busconversions.com.

   Home   Help Forum Rules Search Calendar Login Register BCM Home Page Contact BCM  
Pages: 1 [2]  All   Go Down
  Print  
Author Topic: What do ya'll think about this???  (Read 2208 times)
HighTechRedneck
Global Moderator
Hero Member
*****
Offline Offline

Posts: 2935


BCM Editor


WWW
« Reply #15 on: July 19, 2007, 03:54:49 AM »

I've been watching this thread with interest, and curiosity got the best of me today.  I took my temp gun out to the bus at 4:00 this afternoon and measured the temps on the inside of the windshield and the outside.  With a 93 degree outside actual temp, the windshield measured 138 degrees on the outside surface.  I have the 1/4" foil sandwiched bubble wrap as an inside cover while the bus is parked.  The temperature on the inside surface of the insulation measured 77 degrees with my front Coleman roof air running on low.  I was amazed at the difference that thin Lowe's insulation made!  I checked the temperature on a couple other interior surfaces, and they were within a couple degrees of the insulation temperature.  So---- reflectivity really is an asset for keeping things cool in our buses.   

Since you have the bubble foil and a temp gun, here would be an interesting test to see how sandwiching with other materials affects the performance. Cut two pieces of cardboard the same size (i.e. 2ft x 3ft) and sandwich the bubble foil with no air space between the cardboard and bubble foil on one side of the windshield.  Do this early in the day and have the same AC setting.  When the heat of the day is in full swing and the windshield is getting direct sun, measure each side, the foil only and the foil sandwich.

I have read statements on both side of the issue from people whose knowledge I highly respect.  I think this would be a good way to test the impact of using bubble foil without air space (or glass on the radiant side) surrounding it.
Logged
Nick Badame Refrig/ACC
1989, MCI 102C3, 8V92T, HT740, 06' conversion FMCA# F-27317-S "Wife- 1969 Italian/German Style"
Global Moderator
Hero Member
*****
Offline Offline

Posts: 4874


Nick & Michelle Badame


WWW
« Reply #16 on: July 19, 2007, 04:00:51 AM »

Now here's one for ya...

instead of black paint, just bubble foil the whole bus...Lol

Would look like something from Buck Rodgers or something!

Nick-
Logged

Whatever it takes!-GITIT DONE! 
Commercial Refrigeration- Ice machines- Heating & Air/ Atlantic Custom Coach Inc.
Master Mason- Cannon Lodge #104
https://www.facebook.com/atlanticcustomcoach
www.atlanticcustomcoach.com
orfunauto/Darrell
Jr. Member
**
Offline Offline

Posts: 90




Ignore
« Reply #17 on: July 19, 2007, 02:50:49 PM »

OK hitechredneck,
I tried what you mentioned in your reply from yesterday. At about the same time today as yesterday, the outside temp was 95 degrees ambient, the temp on the windshield in front of the cardboard side was at 130 degrees, and the inside temp was 102 on the cardboard.  The outside temp on the windshield in front of the foil was 149 degrees, and the inside temp on the foil was 88 degrees.  Even though I used a thermometer and it was by far not at all scientific, I'm convinced of the benefits of the foil just by the reflected temp of the foil on the outside of the windshield....19 degrees more than the cardboard.....and 12 degrees cooler than the cardboard on the inside..... Smiley
Logged

74 MCI 8
LaGrange, NC
HighTechRedneck
Global Moderator
Hero Member
*****
Offline Offline

Posts: 2935


BCM Editor


WWW
« Reply #18 on: July 19, 2007, 06:24:42 PM »

Just to make sure I'm clear on it, the 102 side with the cardboard, was that with the bubble foil material sandwiched between sheets of cardboard, or just cardboard by itself?
Logged
orfunauto/Darrell
Jr. Member
**
Offline Offline

Posts: 90




Ignore
« Reply #19 on: July 19, 2007, 06:31:18 PM »

Just the cardboard.
Logged

74 MCI 8
LaGrange, NC
HighTechRedneck
Global Moderator
Hero Member
*****
Offline Offline

Posts: 2935


BCM Editor


WWW
« Reply #20 on: July 19, 2007, 06:50:43 PM »

That's what I thought it sounded like.  My curiousity was actually about how effective bubble foil is when it doesn't have air space or glass on the radiant side (i.e. when it is used between rigid foam insulation and the exterior wall/roof of the bus).  Some claim it loses almost all of it's insulating value while others claim it still works well.  I highly respect the experience and knowledge of the people on both sides of the issue so it makes it hard without actually testing the concept.
Logged
Pages: 1 [2]  All   Go Up
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.18 | SMF © 2013, Simple Machines Valid XHTML 1.0! Valid CSS!