Today, I'd try to install a photovoltaic panel. I have them on my house,
and they help with heat there!

On Thu, Jun 11, 2015 at 8:00 PM, Richard Smith <richard_smith@gnwc.ca>
wrote:

> They have mainly disappeared now, but for many years the taxis in Hong
> Kong (Toyota Crowns) had a dual roof. On top of the regular roof, and
> separated by about an inch, was another roof. The idea was that the flow
> of air between the two roofs, as well as the shade, I guess, would make
> for a cooler car. Perhaps this was because there was no air conditioning,
> or to ease the burden on the air conditioner. I forget now, it was a long
> time ago.
>
> Ah, I found a picture:
>
> http://en.wikipedia.org/wiki/Taxicabs_of_Hong_Kong#/media/File:HK_Toyota_Co
> mfort_Red_Taxi.jpg
>
> Perhaps if this really works, you could find a wrecked Westy, cut off the
> roof, and put it on top of the existing roof. Might get you a mention in
> ³There, I fixed it.² (http://failblog.cheezburger.com/thereifixedit) :-)
>
> Šr
>
>
>
> On 2015-06-11, 7:52 PM, "PSD" <psdooley@VERIZON.NET> wrote:
>
> >Considering the Westy top, the heat transfer would be through conduction,
> >through fiberglass, which isn't a good conductor.
> >You would need to get 2 Westys, one with a light top, one with dark, park
> >them side by side and measure the inside temperature.  It would also be
> >interesting to measure the inside surface temp of the pop tops.
>

-- 
Bill Gibson
Tempe, Arizona, USA