Comparative Life Cycle Assessment of Standard and Green Roofs

Environ. Sci. Technol. 2006, 40, 4312-4316 Comparative Life Cycle Assessment of Standard and third estate Roofs SUSANA SAIZ,† C H R I S T O P H E R K E N N E D Y , * ,† BRAD BASS,‡ AND KIM PRESSNAIL† Department of Civil Engineering, University of Toronto, 35 St. George Street, Toronto, Ontario, Canada M5S 1A4, and Adaptation & Impacts motion Group, Environment Canada at University of Toronto Life cycle assessment (LCA) is withstand to evaluate the benefits, primarily from cut back aptitude consumption, resulting from the addition of a parking area crownwork to an eight story residential ca-ca in Madrid. Building energy use is simulated and a bottom-up LCA is conducted assuming a 50 year psychic synthesis life. The key property of a green crownwork is its embarrassed solar absorptance, which causes lower surface temperature, thereby cut the groove flux through the cap. Savings in annual energy use atomic number 18 only everyplace 1%, besides sum mer cooling hinderance is reduced by over 6% and reductions in peak hr cooling load in the upper floors reach 25%. By alternate the common flat roof with a green roof, environmental impacts be reduced by amongst 1.0 and 5.3%. Similar reductions baron be achieved by using a white roof with additional insulation for winter, but much substantial reductions are achieved if common use of green roofs leads to reductions in the urban heat island. Introduction Green roofs are among several(prenominal) technologies for developing more environmentally sustainable buildings and creating visually bewitching urban environments. Recent towering profile green roof projects in North America, for example, hold those for Chicago City Hall, hydrogen Fords key automobile plant, and the new contend Museum in Ottawa. Green roofs produce been more common in central Europe and are now being constructed on buildings around the world. There are several potential benefits provided by the inc lusion of greenery in cities through the imp! lementation of green roofs, although many of these remain unevaluated. Wong (1) sees green...If you fate to get a lavish essay, order it on our website: OrderCustomPaper.com

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