"Cool Roof" High Albedo Reflects Sunlight
Part of: "Best Ways To Cool Your Home."
A "cool roof" combines high solar-light reflectance (albedo) with high thermal emmittance. The US Environmental Protection Agency (EPA) estimates the following savings in money ($ dollars) and electricity (kWh): The EPA labeled these figures as "annual" savings although that seems low compared to its other statement that a cool roof can save 20-70% of annual cooling consumption based on "over 10 buildings in California and Florida":
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posted by J at IHB and HFF @ 9:28 AM
4 Comments:
With those kinds of figures it does not seem very cost effective, they will have to keep the air conditioning units going a little longer I think, I do believe that we are close to more efficient energy saving devices but they have to be cost effective, a friend had solar panels fitted about two years ago and has since worked out it will take about 15 to 20 years to regain the cost, but as he said in that period technology will have moved on so much they will be obsolite any way.
Hello. I agree, although passive coatings as simple as white paint will have a quick payback.
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