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Below that, in the deeper layer, the temperature is effectively constant, rising about 0.025 °C per metre according to the geothermal gradient. The "penetration depth" [3] is defined as the depth at which the temperature variable is less than 0.01 of the variation at the surface. This also depends on the type of soil:
Producing steam from a well in a reservoir hotter than 450 °C (840 °F)—at a proposed rate of around 0.67 cubic metres per second (24 cu ft/s) should be sufficient to generate around 45 MW. If this is correct, then the project could be a major step towards developing high-temperature geothermal resources. [4]
In total, electrical station construction and well drilling costs about 2–5 million € per MW of electrical capacity, while the levelised energy cost is 0.04–0.10 € per kW·h. [10] Enhanced geothermal systems tend to be on the high side of these ranges, with capital costs above $4 million per MW and levelized costs above $0.054 per kW·h ...
A measure of the amount of heat absorption required to melt I ton of ice in 24 hours. A ton of refrigeration is a measure of the amount of cooling delivered by a heat pump (or other air conditioning system). One ton of refrigeration is equivalent to a cooling rate of 12,000 Btu per hour.
The geothermal production well reached a depth of 5,275 m (17,306 ft) and the fluid injection well 2,393 m (7,851 ft). [ 3 ] [ 1 ] Between August 2020 and July 2021, the wells underwent a series of injection tests to analyse the hydrology within the fractured geothermal reservoir.
As of 2007, 28 GW of geothermal heating capacity is installed around the world, satisfying 0.07% of global primary energy consumption. [1] Thermal efficiency is high since no energy conversion is needed, but capacity factors tend to be low (around 20%) since the heat is mostly needed in the winter.
Most drilled geothermal exploration wells, up to the production well, are still considered to be within the exploration phase. Most consultants and engineers consider exploration to continue until one production well is completed successfully. [4] Generally, the first wildcat well has a success rate of 25%. Following more analysis and ...
As of 2007 plant construction and well drilling cost about €2–5 million per MW of electrical capacity, while the break-even price was 0.04–0.10 € per kW·h. [10] Enhanced geothermal systems tend to be on the high side of these ranges, with capital costs above $4 million per MW and break-even above $0.054 per kW·h.