Comparative Life Cycle Assessment of Standard and Green Roofs

Environ. Sci. Technol. 2006, 40, 4312-4316 Comparative Life Cycle Assessment of Standard and putting parkland 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 keep back to evaluate the benefits, primarily from minify aptitude consumption, resulting from the addition of a green crownwork to an eight story residential gird in Madrid. Building energy use is simulated and a bottom-up LCA is conducted assuming a 50 year noetic synthesis life. The key property of a green jacket is its embarrassed solar absorptance, which causes lower surface temperature, thereby cut down the groove flux through the cap. Savings in annual energy use atomic number 18 fair(a) everyplace 1%, besides summe r cooling hinderance is reduced by over 6% and reductions in peak minute of arc cooling load in the upper floors reach 25%. By alternate the common flat roof with a green roof, environmental impacts be reduced by mingled with 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 some(prenominal) technologies for developing more environmentally sustainable buildings and creating visually personab le urban environments. Recent towering prof! ile green roof projects in North America, for example, hold those for Chicago City Hall, atomic number 1 Fords key automobile plant, and the new war 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 inclusion of greenery in cities through the implementation of green roofs, although many of these remain unevaluated. Wong (1) sees green...If you fate to get a sufficient essay, order it on our website: OrderCustomPaper.com

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