EXTRACTING USABLE HEAT FROM ABANDONED UNDERGROUND MINES: EXAMPLE OF CON MINE, YELLOWKNIFE, CANADA
Abandoned and operating underground mines are excellent sources of green heat if located near a heat market. Virgin Rock Temperature at the depth of some deep mines is above 50°C and mine workings provide excellent permeability to allow extraction of heat from rocks. Lump-sum and finite difference heat conduction modeling is carried out to assess the usable heat capacity of an abandoned deep mine (known as Con mine) in the North West Territories of Canada, close to the city of Yellowknife. Models show that sustainable heat fluxes into the deep mine workings are significant and the temperature of delivered heat increases with depth. Temperature of the delivered heat is also affected by the temperature, flow, and location of injected waters. Heat reserve in different mine levels were calculated based on the estimated temperature gradient. Total extractable heat accessible through mine workings was calculated based on the heat present in the vicinity of the mine workings (to a maximum distance of 20 m). It is shown that up to 10 MW of usable heat can be extracted from the mine to support up to 50％ of the heat demand of the city of Yellowknife.
Geothermal energy heat frommine thermal conduction modeling Con Mine Yellowknife Geothermal district heating.
Mory Ghomshei Hani Eskandari Francesco Villecco
University of British Columbia, NBK Institute of Mining, 6350 Stores Road, Vancouver, BC ,Canada;Con University of British Columbia, Dept. of Electrical and Computer Engineering, 2332 Main Mall, Vancou University of British Columbia, NBK Institute of Mining, 6350 Stores Road, Vancouver, BC ,Canada
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2009-08-02（万方平台首次上网日期，不代表论文的发表时间）