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T-Space at The University of Toronto Libraries >
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Please use this identifier to cite or link to this item: http://hdl.handle.net/1807/18905

Title: Comparative Energy and Carbon Assessment of Three Green Technologies for a Toronto Roof
Authors: Myrans, Katharine
Advisor: Harvey, Danny
Department: Geography
Keywords: energy
green roof
photovoltaic
solar thermal
embodied energy
Life Cycle Analysis
energy payback
carbon emissions
Toronto
rooftops
Issue Date: 15-Feb-2010
Abstract: Three different green technologies are compared in terms of net energy and carbon savings for a theoretical Toronto rooftop. Embodied energy values are calculated through Life Cycle Analysis and compared to the estimated energies produced and/or saved by each technology. Results show that solar photovoltaics displace the most carbon per m2 of roof space and solar thermal (for hot water) displaces the most energy. An in-depth analysis of an intensive green roof for growing food indicates that the high embodied energy of the materials is not quickly repaid by the sum of six energy savings that were examined (direct and indirect cooling, run-off treatment, transport of food, on-farm energy use, and activities that would otherwise be carried out). However, the energy and carbon benefits are not insignificant, but depend strongly on various assumptions. The methodology used is replicable and therefore useful for other locations.
URI: http://hdl.handle.net/1807/18905
Appears in Collections:Master
Department of Geography - Master theses

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