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Cooling swimming pool in high temp - Page 8

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Posted by Ron Purvis on April 28, 2006, 1:24 pm
 


It would also reduce damage to the asphalt from high heat. According to the
Heat Island Group the cost of making a road more reflective would be
completely offset by the savings from not having to repair as often.



Posted by Don K on April 28, 2006, 11:08 pm
 

the people in the

neighborhood I see many roofs

Heat Island Group the

savings from not having

On the other hand, a black road surface is easier to keep clear of ice
and snow in the winter.

Roads often are made from whatever material is cheaply available. In
Baltimore, Old Shell Road (Holabird Avenue) was even made from
oyster shells. When I was growing up, roads were made with cinders
from the steel mill.

Don



Posted by Iain McClatchie on April 29, 2006, 1:20 am
 Anthony> I would think that white roads would cut down on
Anthony> air-conditioning and the associated deaths during
Anthony> hot weather.

Hello? Glare?  Your excellent heat-island point notwithstanding,
the glare from reflective roads would be killing.

Maybe you'd want a selective surface that reflects IR+UV but
absorbs visible light.  The problem is that a good chunk of
the Sun's power output is in the visible spectrum.

The later poster's point about oyster shells suggests another
alternative.  A white road with a texture that tends to make it
less reflective longitudinally and more reflective laterally.
Glare doesn't matter when you're looking across the road.  I
think the grooves you'd end up with would do well at
channeling water off the road.  But rain grooves tend to be
longitudinal out here in California...

Sharp groove edges might pose a problem for tire wear.


Posted by SJC on April 29, 2006, 2:35 pm
 

  While this is off topic from the original pool question, I heard that =
they
can now use ground tire material for some of the road paving. It is more
durable and the patent that kept them from using it has expired. Which
bring us to patent abuse...but that is another story.

Posted by Solar Flare on April 29, 2006, 9:27 pm
 Now? They have been experiementing with ground old tire since I was a
kid. 50 years or more. Some areas in Ontario use it exclusively. What
the mix ratio is I do not know.



  While this is off topic from the original pool question, I heard
that they
can now use ground tire material for some of the road paving. It is
more
durable and the patent that kept them from using it has expired. Which
bring us to patent abuse...but that is another story.



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