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- W2912237758 abstract "The convective heat of molten magma in the upper 10 km of the continental crust represents a significant geothermal energy resource. Shallow basaltic magmas (< 10 km) near the liquidus (1250°C) are predicted to offer heat extraction rates in the range of 15–50 kW/m2 (20–80 MW/well). More accessible andesitic and wet rhyolitic magmas are predicted to offer heat extraction rates in the range of 5–25 kW/m2 (8–40 MW/well). Convective heat transfer correlations are used which include corrections for high Prandtl number fluids and cylindrical boundary layers. The calculations based on these correlations agree well with laboratory tests using molten basalt at superliquidus temperatures (1450–1650°C). At liquidus and subliquidus temperatures an additional correction is developed for the thick solidified crust that forms on the heat exchanger. Non-Newtonian rheology is considered and shown to have a possible effect on the initiation of convection in the liquidus and subliquidus temperature range. In addition to heat extraction estimates, the analysis presented here is also relevant to convective heat loss to walls of magma bodies." @default.
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- W2912237758 date "1994-06-01" @default.
- W2912237758 modified "2023-10-17" @default.
- W2912237758 title "Trench foot" @default.
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- W2912237758 doi "https://doi.org/10.1580/0953-9859-5.2.231" @default.
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