Re: [Phys-l] paint your roof?

["Rick Tarara" <rtarara@saintmarys.edu>]

A claim I seriously doubt can be sustained.  Passenger vehicles use about 
17% of the U.S. energy consumption while air-conditioning is at about 5%. 
Heating is at 20% and the white roofs would increase (to some extent) 
heating demand.  Hard for me to see the numbers working out unless Chu is 
integrating the air-conditioning savings over a century or so.  Never forget 
the Mark Twain quote about statistics.  ;-)

Rick


----- Original Message ----- 
From: "Anthony Lapinski" <Anthony_Lapinski@pds.org>
To: <phys-l@carnot.physics.buffalo.edu>
Sent: Wednesday, May 27, 2009 6:30 AM
Subject: [Phys-l] paint your roof?


> Here's an interesting news item this morning: paint your roof white to
> reflect sunlight and save energy. This (and other changes) could have the
> equivalent effect of taking every car in the world off the road for 11
> years. That's an amazing claim.
>
> http://green.yahoo.com/news/afp/20090526/sc_afp/climatewarmingusbritainchu.html
>
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