cost-benefit analysis of smog-eating tiles
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Cost-Benefit Analysis of Smog-Eating Tiles. Ben Bahlenhorst Zheng Fu Joe Hill Ian Laird Long Nguyen Binh Phan. Introduction. Smog-Eating Tiles: Compostable tiles created by Boral that absorb smog in areas that harbor large quantities of inhabitants. - PowerPoint PPT PresentationTRANSCRIPT
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Cost-Benefit Analysis of Smog-Eating Tiles
Ben BahlenhorstZheng FuJoe Hill
Ian LairdLong Nguyen
Binh Phan
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IntroductionSmog-Eating Tiles: Compostable tiles
created by Boral that absorb smog in areas that harbor large quantities of inhabitants
Purpose: inform the reader about the costs and benefits of smog-eating tiles in areas that have high levels of smog
Benefits the environment, and human health in densely populated metropolises
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How They WorkTiles are coated with titanium dioxide
In sunlight, the titanium dioxide reacts with the nitrogen oxides, which breaks them down into calcium nitrate:
TiO2 + NOx + Sunlight = Ca(NO3)2
Calcium nitrates do not harm human health. These substance are left on tiles, and washed off when it rains
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How They Work
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CostsInitial costs average about 25%
more than traditional tilesInstallation costs do not differ from
traditional tilesRemoval costs are also the same,
but transportation to a recycling facility add additional costs
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SubsidizeLocal government should provide tax cuts
to those who purchase smog eating roofs
A tax on traditional roof tiles and maintenance will pay for the tax incentive
This makes smog eating tiles the cheaper option
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BenefitsReduced smog pollution in densely
populated areasNitrates: great for surrounding plant
lifeKeeps homes warm in the winter and
cool in the summerHuman health will increase
considerably
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Lifespan Compostable materials are durable
Tiles last for an average of 25 years before they need to be replaced
Half as long as traditional tile life
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DisposalNeed to be replaced just as wood or asphaltHowever, concrete tiles are
replaced less oftenThey will not clog landfills like
other roofing materialsTiles can be recycled and made into
new tiles, or infrastructureThey benefit the environment
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ConclusionBenefits outweigh the costsSmog level reduction creates a
healthier environment and inhabitants
Tiles reduce home heating and cooling costs
Recyclable tiles mitigate the amount of landfill waste
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Questions?
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Works Cited Benefits of concrete roofing tile recycling. (2008, October 20). Retrieved from http://www.boralna.com/rooftiles/concrete-recycling-
benefits.asp
Emission Standards Reference Guide. Retrieved fromhttp://www.epa.gov/otaq/standards/light-duty/ld-cff.htm
Levinson, R. (2007). Cooler tile-roofed buildings with near-infrared-reflective non-white coatings. Building and Environment, 42(7), doi: http://dx.doi.org/10.1016/j.buildenv.2006.06.005
Palmer, J. (2011, November 12). 'smog-eating' material breaking into the big time. Retrieved from
http://www.bbc.co.uk/news/science-environment-15694973 Peters, J. (2011, February 1). Los angeles homes going green with smog-eating roof tiles. Retrieved from
http://www.homejane.com/los-angeles-homes-going-green-with-smog-eating-roof-tiles.html Renowden, J. (2012, July 19). Smog-eating tile: A real-world product for reducing the harmful health effects of contaminated air.
Retrieved from http://www.rci-online.org/interface/2012-01-renowden.pdf Renowden, J. (2011, July 12). Smog eating tile with boralpure™ technology. Retrieved from http://www.boralna.com/rooftiles/smog-
eating-tile.asp Titanium dioxide used to reduce no levels in. (2011, April 1). Retrieved from http://ehis.ebscohost.com/ehost/pdfviewer/pdfviewer?
sid=c3a3e876-00b6-4abf-a84f-bb2444cfe6a4@sessionmgr10&vid=2&hid=5 Verwymeren, A. (2011, September 12). Smog-eating tiles may make pollution a thing of the past. Retrieved from
http://www.networx.com/article/smog-eating-tiles-may-make-pollution-a-t What is photocatalyst. (2012). Retrieved from http://www.photocoat.com/What_is_Photocatalyst.html