It improves memory in children. We have a shed in the backyard with a metal roof. Plain gray. Nothing fancy. I used my laser thermometer on the inside early this afternoon. The OAT was 91F. The inside temp of just the roof was 152F.
I should have brought bacon, eggs, and a frying pan. -- bp part15sbs{at}gmail{dot}com On Thu, Aug 15, 2019 at 5:03 PM Ken Hohhof <af...@kwisp.com> wrote: > OK, is that why they paint the tops of school buses white? I've always > wondered about that. > > -----Original Message----- > From: AF <af-boun...@af.afmug.com> 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 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 > > fiberglass creations were all sensitive to heat (room > > temperature-cured epoxy/fiberglass). There is no question that pure, > > unadulterated white is the best "color" to prevent thermal gain from > > direct sun. All other colors, cream, light yellow, even mirror > > experienced significant gains above just plain white. > > > > bp > > <part15sbs{at}gmail{dot}com> > > > > On 8/15/2019 4:31 PM, Ken Hohhof wrote: > >> > >> The difference between standard machine grey and just bright white > >> spray paint from the hardware store is dramatic. I suspect > >> everything beyond that is incremental. > >> > >> Also back around 2005 when I ordered my first outdoor cabinet from > >> DDB, I thought I wanted unpainted metal aluminum since all the > >> traffic control boxes I see are plain metal or 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 <af-boun...@af.afmug.com> *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 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 don't exactly describe it as snake oil, but they also suggest > >> that you not get your hopes up. > >> > >> I suspect you can get your best results with a coat of reflective > >> white paint, and try to keep it clean. > >> > >> bp > >> <part15sbs{at}gmail{dot}com> > >> > >> On 8/15/2019 1:12 PM, ch...@wbmfg.com <mailto:ch...@wbmfg.com> wrote: > >> > >> Be interesting to do a bake off between this and the plain > >> “satellite white” I use. > >> > >> I have always found it interesting that highly reflective things > >> like polished aluminum, chrome and silver paint seem to be really > >> bad at reflecting heat/sun. But we have all grabbed a chrome > >> wrench that 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 <mailto:af@af.afmug.com> > >> > >> *Subject:*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 > >> reduction in temperature of over 60 degrees F, it may be worth a > look. > >> > >> https://superiorcoatingsolutions.com/super-therm/ > >> > >> bp > >> > >> <part15sbs{at}gmail{dot}com> > >> > >> On 8/15/2019 12:35 PM, Lewis Bergman wrote: > >> > >> I remember Chuck doing a study on this same subject so I > >> thought there might be some interest. > >> > >> Cabinet heat load > >> > >> <https://www.ddbunlimited.org/wp-content/uploads/2019/08/Solar-Load-o > >> n-DDB-Enclosures.pdf> > >> > >> -- > >> > >> Lewis Bergman > >> > >> 325-439-0533 Cell > >> > >> > >> > >> > >> --------------------------------------------------------------------- > >> --- > >> > >> -- > >> AF mailing list > >> AF@af.afmug.com <mailto:AF@af.afmug.com> > >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com > >> > >> > >> > >> > > > > > > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > > > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com >
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