Re: [AFMUG] Solar load

; absolutely didn’t want plain metal because it would get hot in the sun and >> what I wanted was the cream color. >> >> >> >> *From:* AF *On Behalf Of *Bill Prince >> *Sent:* Thursday, August 15, 2019 6:19 PM >> *To:* af@af.afmug.com >> *Subject:* Re:

Re: [AFMUG] Solar load

: [AFMUG] Solar load All of our DDB boxes have the brushed metal finish. I painted one of them with some white elastomeric roof coating stuff from Lowes that is meant to reflect solar energy, and the peak internal temp only went down ~5°F. We have a lot of gear in that box, so I think an

Re: [AFMUG] Solar load

e > *Sent:* Thursday, August 15, 2019 6:19 PM > *To:* af@af.afmug.com > *Subject:* Re: [AFMUG] Solar load > > > > If you look up insulating paint on Wikipedia, the entry there says all > ceramic heat-reflective coatings are snake oil. > > I did find a good discu

Re: [AFMUG] Solar load

>> OK, is that why they paint the tops of school buses white? I've always >> wondered about that. >> >> -Original Message- >> From: AF On Behalf Of Robert Andrews >> Sent: Thursday, August 15, 2019 6:55 PM >> To: af@af.afmug.com >> Subject

Re: [AFMUG] Solar load

e? I've always >>> wondered about that. >>> >>> -Original Message----- >>> From: AF On Behalf Of Robert Andrews >>> Sent: Thursday, August 15, 2019 6:55 PM >>> To: af@af.afmug.com >>> Subject: Re: [AFMUG] Solar load >>&g

Re: [AFMUG] Solar load

said I absolutely didn’t want plain metal because it >> would get hot in the sun and what I wanted was the cream color. >> >> *From:*AF mailto:af-boun...@af.afmug.com>> *On Behalf Of *Bill Prince >> *Sent:* Thursday, August 15, 2019 6:19 PM >> *To:* af@

Re: [AFMUG] Solar load

, 2019 6:55 PM > To: af@af.afmug.com > Subject: Re: [AFMUG] Solar load > > Why most smart airplane owners want at least the top to be white! > > On 08/15/2019 04:40 PM, Bill Prince wrote: > > Burt Rutan did a study of his own back around 1985 or so, as his > >

Re: [AFMUG] Solar load

OK, is that why they paint the tops of school buses white? I've always wondered about that. -Original Message- From: AF On Behalf Of Robert Andrews Sent: Thursday, August 15, 2019 6:55 PM To: af@af.afmug.com Subject: Re: [AFMUG] Solar load Why most smart airplane owners want at

Re: [AFMUG] Solar load

where a box is out in the open, this time of year on a clear day a standard grey enclosure gets very, very hot. -Original Message- From: AF On Behalf Of Robert Andrews Sent: Thursday, August 15, 2019 6:41 PM To: af@af.afmug.com Subject: Re: [AFMUG] Solar load We use black boxes for

Re: [AFMUG] Solar load

ck) I assume a radome would prevent that > by letting RF through but not sunlight? > > > > *From:* AF *On Behalf Of *ch...@wbmfg.com > *Sent:* Thursday, August 15, 2019 3:13 PM > *To:* af@af.afmug.com > *Subject:* Re: [AFMUG] Solar load > > > > Be inte

Re: [AFMUG] Solar load

stainless steel. The salesperson said I absolutely didn’t want plain metal because it would get hot in the sun and what I wanted was the cream color. *From:*AF *On Behalf Of *Bill Prince *Sent:* Thursday, August 15, 2019 6:19 PM *To:* af@af.afmug.com *Subject:* Re: [AFMUG] Solar load If y

Re: [AFMUG] Solar load

metal because it would get hot in the sun and what I wanted was the cream color. *From:*AF *On Behalf Of *Bill Prince *Sent:* Thursday, August 15, 2019 6:19 PM *To:* af@af.afmug.com *Subject:* Re: [AFMUG] Solar load If you look up insulating paint on Wikipedia, the entry there says all ceramic

Re: [AFMUG] Solar load

From: AF On Behalf Of Bill Prince Sent: Thursday, August 15, 2019 6:19 PM To: af@af.afmug.com Subject: Re: [AFMUG] Solar load   If you look up insulating paint on Wikipedia, the e

Re: [AFMUG] Solar load

@af.afmug.com Subject: Re: [AFMUG] Solar load If you look up insulating paint on Wikipedia, the entry there says all ceramic heat-reflective coatings are snake oil. I did find a good discussion on Scientific American (https://www.scientificamerican.com/article/benefits-of-insulating-paint/). They

Re: [AFMUG] Solar load

black.    From: Bill Prince Sent: Thursday, August 15, 2019 1:46 PM To: af@af.afmug.com Subject: Re: [AFMUG] Solar load   Which remin

Re: [AFMUG] Solar load

My guess that what gets in, it would be almost as effective as keeping it from getting out. They list it as a block to radiation (UV, visual, and IR), plus as an insulator. According to their web site, it is measurably better than white paint. All that said, you would probably still want to (a

Re: [AFMUG] Solar load

My guess that what gets in, it would be almost as effective as keeping it from getting out. They list it as a block to radiation (UV, visual, and IR), plus as an insulator. According to their web site, it is measurably better than white paint. All that said, you would probably still want to (a

Re: [AFMUG] Solar load

But does it let interior thermal radiation out? I suppose you could just paint the top and three sides and radiate on the northern side? Would it be best to paint the northern side a radiant black then? Curious minds want to know! On 08/15/2019 12:46 PM, Bill Prince wrote: Which reminds me o

Re: [AFMUG] Solar load

dark grey? (or in some cases black) I assume a radome would prevent that by letting RF through but not sunlight? From: AF On Behalf Of ch...@wbmfg.com Sent: Thursday, August 15, 2019 3:13 PM To: af@af.afmug.com Subject: Re: [AFMUG] Solar load Be interesting to do a bake off between this

Re: [AFMUG] Solar load

has been left in the hot summer sun and realized hot much it absorbs. I am guessing what we see as reflective, Infra Red sees as flat black. From: Bill Prince Sent: Thursday, August 15, 2019 1:46 PM To: af@af.afmug.com Subject: Re: [AFMUG] Solar load Which reminds me of this material that a

Re: [AFMUG] Solar load

Which reminds me of this material that a friend clued me in on. You can get this at Home Depot (for example). It is pricey; around $250 per 5 gallon bucket, AND it needs a top coat of another material at near the same price. However, for an advertised reductio

[AFMUG] Solar load

I remember Chuck doing a study on this same subject so I thought there might be some interest. Cabinet heat load -- Lewis Bergman 325-439-0533 Cell -- AF mailing list AF@af.afmug.com http://af.afmug.com/ma