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Cooling swimming pool in high temp - Page 7

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Posted by SJC on April 23, 2006, 6:10 pm
 


  I could envision flying over the US from north to south and seeing =
black
roofs in the north and white roofs in the south. That might save natural =
gas
for heating in the north and electricity for cooling in the south. =
Perhaps one
simple but effective solution.

Posted by Ron Purvis on April 24, 2006, 12:21 am
 
We could only hope that more people will do this.

  I could envision flying over the US from north to south and seeing black
roofs in the north and white roofs in the south. That might save natural gas
for heating in the north and electricity for cooling in the south. Perhaps
one
simple but effective solution.



Posted by daestrom on April 27, 2006, 8:16 pm
 


  I could envision flying over the US from north to south and seeing black
roofs in the north and white roofs in the south. That might save natural gas
for heating in the north and electricity for cooling in the south. Perhaps
one
simple but effective solution.

Couple ofl things wrong with this idea (at least for northern climates).

1) It assumes the roof temperature is a direct input to heating/cooling.  In
the great white north, people actually *want* a cold roof, not a hot roof.
Cold roofs, well insulated from the living space do not promote as much
icicle formation.

2) 'Black roofs' in the north don't stay black after the first snow fall.

daestrom


Posted by Ron Purvis on April 27, 2006, 8:29 pm
 

Excellent points about those in the north. I think it is still valid that
the people in the south should have more reflective roofs than what they do.
In my neighborhood I see many roofs that are black. That is just asking for
problems.



Posted by Anthony Matonak on April 28, 2006, 7:19 am
 Ron Purvis wrote:
...

I would lay odds that you see many more roads that are black.
These contribute to the heat island effect that makes most
cities much warmer than the surrounding countryside. I would
think that white roads would cut down on air-conditioning and
the associated deaths during hot weather.

Anthony

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