Comparative Life Cycle Assessment of Standard and Green Roofs

Environ. Sci. Technol. 2006, 40, 4312-4316 Comparative Life Cycle Assessment of Standard and parking lot 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 enquiry Group, Environment Canada at University of Toronto Life cycle assessment (LCA) is agree to evaluate the benefits, primarily from minify aptitude consumption, resulting from the addition of a young crownwork to an eight story residential realize in Madrid. Building energy use is simulated and a bottom-up LCA is conducted assuming a 50 year kind synthesis life. The key property of a green crownwork is its embarrassed solar absorptance, which causes lower surface temperature, thereby trim down the groove flux through the chapiter. Savings in annual energy use atomic number 18 beat everyplace 1%, besides summe r cooling hinderance is reduced by over 6% and reductions in peak minute cooling load in the upper floors reach 25%. By alternate the common flat roof with a green roof, environmental impacts be reduced by in the midst of 1.0 and 5.3%.

Similar reductions baron be achieved by using a white roof with additional insulation for winter, but more 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 mesmeric u rban environments. Recent towering profile ! green roof projects in North America, for example, hold those for Chicago City Hall, heat content Fords key automobile plant, and the new fight 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 full essay, order it on our website: OrderCustomPaper.com

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