Download e-book for kindle: An introduction to thermogeology: ground source heating and by David Banks

By David Banks

ISBN-10: 1405170611

ISBN-13: 9781405170611

Using the warmth kept within the shallow subsurface for area heating (ground resource warmth) is well-known in North the USA and plenty of eu international locations, corresponding to Sweden, and is thought of as crucial and trustworthy 'green' house heating expertise. in lots of countries, together with Britain, the expertise continues to be poorly understood and less than used. this case is set to alter, although, with the united kingdom marketplace for floor resource warmth pumps growing to be at over a hundred% every year. This booklet deals functional advice and may equip engineers, planners and geologists with the elemental abilities to evaluate and enforce this new expertise and to introduce them to the technological know-how at the back of thermogeology.

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5 (p. 14), we have already considered the huge convection cells of fluid mantle rock that are related to global plate tectonic processes and continental movements. In the applied science of thermogeology, however, it is not this type of subsurface convection that interests us. Rather, we need to know about the forced convection (advection) of heat that occurs with groundwater flow. 2, p. 5), usually ultimately driven by gravitational forces. 2 kJ K−1 L−1 ). 2), causing groundwater to flow towards the well, where it can be abstracted.

Finally, when considering the issue of sustainability, we would do well to remember timescale. e. a set of geographically and hydrogeologically related extraction and injection wells) may turn out to have a finite lifetime of decades or centuries, the earth’s tectonic and heat flow processes have a timescale of millions of years. If we have to abandon a geothermal field after 100 years, the ultimate heat source (geothermal heat flux and magmatism associated with plate tectonics) remains. e. typically decades to centuries; Rybach, 2003a).

By decreasing qback and also by impacting convective and evaporative heat transfer). 2 Average monthly and annual rates of insolation at selected European locations, after data provided by Whitlock et al. (2000). Figures are cited as kWh m−2 day−1 (and W m−2 ).

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An introduction to thermogeology: ground source heating and cooling by David Banks

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