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[[File:Geothermal cooling exchange system.PNG|thumb|660px|A simplified 3D cross section of a geothermal cooling system used in a SWM pond in Brampton, Ontario. The system contains a closed hydronic circuit where piping connected a surface water heat exchanger (SHX) to a ground heat exchanger (GHX). A pump continuously circulates a cool hydronic fluid around the circuit. The SHX (placed in the path of the pond outflow) has the water pass through it. The hydronic fluid circulating through the SHX is cooler than warm stormwater outflows. This temperature difference forces heat energy from the stormwater into the hydronic fluid, thus cooling the stormwater leaving the pond. Read more about the system [https://www.chijournal.org/C483 Here]. Photo Source: (Janssen and Van Seters,2022.)<ref>Janssen, E. and Van Seters, T. 2022. Thermal Mitigation of Stormwater Management Pond Outflows Using Geothermal Cooling. Journal of Water Management Modeling. https://www.chijournal.org/Content/Files/C483.pdf</ref>]]

[[File:Geothermal cooling exchange system.PNG|thumb|660px|A simplified 3D cross section of a geothermal cooling system used in a SWM pond in Brampton, Ontario. The system contains a closed hydronic circuit where piping connected a surface water heat exchanger (SHX) to a ground heat exchanger (GHX). A pump continuously circulates a cool hydronic fluid around the circuit. The SHX (placed in the path of the pond outflow) has the water pass through it. The hydronic fluid circulating through the SHX is cooler than warm stormwater outflows. This temperature difference forces heat energy from the stormwater into the hydronic fluid, thus cooling the stormwater leaving the pond. Read more about the system [https://www.chijournal.org/C483 Here]. Photo Source: (Janssen and Van Seters,2022.)<ref name="example1">Janssen, E. and Van Seters, T. 2022. Thermal Mitigation of Stormwater Management Pond Outflows Using Geothermal Cooling. Journal of Water Management Modeling. https://www.chijournal.org/Content/Files/C483.pdf</ref>]]

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===='''Geothermal Cooling'''====

===='''Geothermal Cooling'''====

This innovative approach uses one or more deep (180 m) geothermal boreholes connected in a closed loop with a pond heat exchanger to cool outflows from stormwater ponds.  A metal or polyethylene heat exchanger is installed in an enclosure at the outlet of the pond.  A heat transfer fluid is pumped through the closed loop to maximize transfer of heat energy from the warm water to the much colder ground.  Warm outflows from the pond enter the enclosure and pass over the pond heat exchanger, which transfers energy from the water to the closed loop and into the ground. The approach was piloted by TRCA/STEP, in partnership with the City of Brampton, on a small pond in Brampton (Janssen and Van Seters, 2021<ref>Erik Janssen and Tim Van Seters. 2021. Geothermal-based Thermal Mitigation of Stormwater Retention Pond Outflows: Report Addendum. Sustainable Technologies Evaluation Program, Toronto and Region Conservation Authority, Vaughan, Ontario. https://sustainabletechnologies.ca/app/uploads/2022/03/Geo_Cooling_Report_2021.pdf</ref> and 2022<ref>Janssen, E. and Van Seters, T., 2022. Thermal Mitigation of Stormwater Management Pond Outflows Using Geothermal Cooling. Journal of Water Management Modeling.https://www.chijournal.org/C483</ref>)  

This innovative approach uses one or more deep (180 m) geothermal boreholes connected in a closed loop with a pond heat exchanger to cool outflows from stormwater ponds.  A metal or polyethylene heat exchanger is installed in an enclosure at the outlet of the pond.  A heat transfer fluid is pumped through the closed loop to maximize transfer of heat energy from the warm water to the much colder ground.  Warm outflows from the pond enter the enclosure and pass over the pond heat exchanger, which transfers energy from the water to the closed loop and into the ground. The approach was piloted by TRCA/STEP, in partnership with the City of Brampton, on a small pond in Brampton (Janssen and Van Seters, 2021<ref>Erik Janssen and Tim Van Seters. 2021. Geothermal-based Thermal Mitigation of Stormwater Retention Pond Outflows: Report Addendum. Sustainable Technologies Evaluation Program, Toronto and Region Conservation Authority, Vaughan, Ontario. https://sustainabletechnologies.ca/app/uploads/2022/03/Geo_Cooling_Report_2021.pdf</ref> and 2022<ref name="example1" />)  

{{textbox|As part of the initiative an online sizing tool for geothermal systems was develop - you can view it by click the button below:

{{textbox|As part of the initiative an online sizing tool for geothermal systems was develop - you can view it by click the button below: