Sentences with phrase «white roofs reflect»

It's long been known that white roofs reflect more heat back into space, reducing the amount of electricity used for A / C and thus drastically cutting down on energy consumption.

A white roof reflects the sun's light and heat, so a couple of coats of paint can reduce your carbon emissions and take about 20 percent off your energy bills.

Not exact matches

For example, a white roof that reflects 80 percent of the sun's light on a typical summer afternoon will stay about 31 degrees C cooler than a gray roof that reflects only 20 percent.

The company says that the solar cylinders — paired with a roof painted white to better reflect sunlight — can collect 20 percent more sunshine than their conventional flat counterparts.

The city has also launched several programs to turn down the climate's thermostat, such as the Million Trees project (more than half a million have already been planted around the city) and painting flat roofs with a white or «cool» coating that reflects the sun's energy.

Other solutions cited in the study include white roofs that reflect more sunlight back to space or hybrid roofs that combine aspects of white and green, or planted, roofs.

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Downtown, Mediterranean - style white stucco buildings with red - tile roofs reflect the city's Spanish colonial heritage.

Her recent curatorial projects have included The Subtle Image group figurative exhibit at Dejavu Gallery, Reflecting Our City for the White Roof Project at the Center for Social Innovation, and participating in the Elizabeth Foundation for the Arts» A Wicked Problem.

The pair also examined whether white roofs — a technique of painting city roofs white to reflect heat — truly serve to cool city temperatures.

At one point Dr. Chu thought that painting roofs and other structures white would help reflect the sun's radiation and save the nation and the world from global warming.

A «white roof» does reflect the sun's rays from the top of each building, and — for a given level of «clean» — a white roof will continue to reflect more energy than a black - gray - brown roof.

If all buildings around the «white roof» are near - equal in height, then no other building intercepts the reflected rays of sunlight, and no other building is «super-heated» above the «standard dirty brown roof» case.

CrossIron Mills has a white membrane roof which reflects heat and reduces interior cooling requirements.

In the real - world, up to a third of it is reflected back to Space from light - colored surfaces (albedo) such as snow, ice, clouds, and the white roof of Energy Secretary Chu's home: ^).

Painting flat roofs of homes and commercial buildings white would reflect more of the sun's heat back to space and reduce electricity used for air conditioning by as much as 15 percent, Chu told reporters today in London, citing research by Arthur Rosenfeld, a member of the California Energy Commission.

My hobbyhorse, bringing the big whales back to fertilize the ocean... White roofs — reflecting visible light — when reroofing; High - emissive roofs — radiating infrared — when reroofing; harvesting krill — good idea?

White roofs are more reflective than green roofs, reflecting roughly three times more sunlight back into the atmosphere and therefore absorbing less sunlight at earth's surface.

PS: «white roof» refers to reflecting visible light.

Jacobson and Ten Hoeve note that reflecting light from white roofs may lead to a decrease in cloud cover, thereby increasing, not decreasing, the urban heat effect.

A white roof which reflects and disperses heat.

A white thermoplastic roof membrane reduces energy costs by reflecting solar energy thereby eliminating additional stress on the cooling system.

(The graphic does not account for the portion of Sunlight that gets through the Atmosphere, and is then reflected back to Space by clouds and other high - albedo surfaces such as ice and white roofs.