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Rainwater harvesting: Sizing and modeling (view source)
Revision as of 17:51, 7 June 2017
, 7 years ago→STEP Rainwater Harvesting Tool
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<p>The Sustainable Technologies Evaluation Program have produced a rainwater harvesting design and costing tool specific to Ontario. The tool is in a simple to use Excel format and is free to download.</p>
<p>The Sustainable Technologies Evaluation Program have produced a rainwater harvesting design and costing tool specific to Ontario. The tool is in a simple to use Excel format and is free to download.</p>
<p>In a study of three sites in Ontario, STEP found the annual C<sub>vol</sub> of the rooftops to be around 0.8[http://www.sustainabletechnologies.ca/wp/home/urban-runoff-green-infrastructure/low-impact-development/rainwater-harvesting/performance-evaluation-of-rainwater-harvesting-systems-toronto-ontario/]. i.e. around 20% of the annual precipitation is retained on the roof. This water is returned to the atmosphere by evaporation.</p>
<p>In a study of three sites in Ontario, STEP found the annual C<sub>vol</sub> of the rooftops to be around 0.8 [http://www.sustainabletechnologies.ca/wp/home/urban-runoff-green-infrastructure/low-impact-development/rainwater-harvesting/performance-evaluation-of-rainwater-harvesting-systems-toronto-ontario/]. This figure includes losses to evaporation, snow being blown off the roof, and number of overflow events.</p>
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