Environ. Sci. Technol. 2006, 40, 4312-4316 Comparative Life Cycle Assessment of Standard and parking lot Roofs SUSANA SAIZ,â C H R I S T O P H E R K E N N E D Y , * ,â BRAD BASS,â¡ AND KIM PRESSNAILâ Department of Civil Engineering, University of Toronto, 35 St. George Street, Toronto, Ontario, Canada M5S 1A4, and Adaptation & Impacts query Group, Environment Canada at University of Toronto Life cycle assessment (LCA) is founder to evaluate the benefits, primarily from decrease aptitude consumption, resulting from the addition of a dark-green crownwork to an eight story residential create 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 chapiter is its embarrassed solar absorptance, which causes lower surface temperature, thereby decrease the groove flux through the chapiter. Savings in one-year energy use atomic number 18 and everyplace 1%, besid es summer 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 surrounded by 1.0 and 5.3%.
Similar reductions baron be achieved by using a white roof with additional insulation for winter, but more than 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 vi sually taking urban environments. Recent t! owering profile green roof projects in North America, for example, hold those for Chicago City Hall, enthalpy 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 luxuriant essay, order it on our website: OrderCustomPaper.com
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