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

By David Banks

ISBN-10: 1405170611

ISBN-13: 9781405170611

Using the warmth kept within the shallow subsurface for house heating (ground resource warmth) is frequent in North the US and lots of eu countries, comparable to Sweden, and is thought of as crucial and trustworthy 'green' area heating know-how. in lots of international locations, together with Britain, the expertise is still poorly understood and below used. this case is ready to alter, in spite of the fact that, with the united kingdom marketplace for flooring resource warmth pumps growing to be at over a hundred% every year. This e-book deals useful tips and may equip engineers, planners and geologists with the basic talents to evaluate and enforce this new expertise and to introduce them to the technology in the back of thermogeology.

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1) We can also express specific heat capacity as Joules per degree Kelvin per unit volume. This is termed the volumetric heat capacity (SVC ). 4 MJ K−1 m−3 . So, from every cubic metre of rock, we can release up to 10 megaJoules (MJ) of energy, simply by dropping its temperature by 4 K. Conversely, we need to put a similar amount of energy back into our cubic metre of rock to raise it temperature by 4 K. The heat energy in the material is ultimately stored as molecular vibrational or kinetic energy; the hotter the material, the faster the molecules of a fluid whiz around, or the molecules of a crystal vibrate.

1). 1. 2, p. 9). D. J. Ångström had started making determinations of the thermal diffusivity/conductivity of sediments and soils (Everett, 1860; Thomson, 1868; Rambaut, 1900). S. A. , 1879; Prestwich, 1885, 1886; Barratt, 1914). The property describing storage of heat is called specific or volumetric heat capacity. It is new to us, so let us consider it in more detail. 1 35 Specific heat capacity: the ability to store heat The ability of a medium (solid, liquid or gas) to store heat is termed its specific heat capacity (SC ).

Such a nation may therefore be able to indefinitely sustain a national energy policy founded on geothermal energy, via a sound understanding and holistic planning of its resources of heat and geothermal fluids. In the discussion above, we have defined ‘sustainability’ rather narrowly and constrained it to discussions of whether production of fluids and heat can be maintained over protracted periods. In popular perception, the discussion of sustainability is bound with the concept of pollution and environmental impact.

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


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