Power Potential of Geothermal Wells Related to Reservoir Temperature

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Description

For equal flows of hot water wells, the electric power which can be generated increases with feed water temperature. However, high temperature wells discharge greater flows than that of lower temperature wells of similar permeability, with the result of enhanced power potential. In fact, where fluids are exploited utilizing two-stage flash, these factors combine to give a power potential which is proportional to the cube of the feed water temperature in degrees celsius. Hence a feed of 315 C would generate twice the power of that of water at 250 C for wells of good permeability and where the reservoir ... continued below

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267-270

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James, Russell January 21, 1986.

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Description

For equal flows of hot water wells, the electric power which can be generated increases with feed water temperature. However, high temperature wells discharge greater flows than that of lower temperature wells of similar permeability, with the result of enhanced power potential. In fact, where fluids are exploited utilizing two-stage flash, these factors combine to give a power potential which is proportional to the cube of the feed water temperature in degrees celsius. Hence a feed of 315 C would generate twice the power of that of water at 250 C for wells of good permeability and where the reservoir exists under conditions of boiling point with depth. Higher temperature water (exceeding 300 C) has, however, a commensurate higher tendency to mineral deposition in reinjection water lines and this disposes design to single-stage flash with slightly reduced power, compared with the two-stage alternative.

Physical Description

267-270

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  • Proceedings, Eleventh Workshop Geothermal Reservoir Engineering, Stanford University, Stanford, California, January 21-23, 1986

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  • Report No.: SGP-TR-93-39
  • Grant Number: AS03-80SF11459
  • Grant Number: AS07-84ID12529
  • Office of Scientific & Technical Information Report Number: 887165
  • Archival Resource Key: ark:/67531/metadc886428

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Office of Scientific & Technical Information Technical Reports

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  • January 21, 1986

Added to The UNT Digital Library

  • Sept. 21, 2016, 2:29 a.m.

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  • Dec. 7, 2016, 7:04 p.m.

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James, Russell. Power Potential of Geothermal Wells Related to Reservoir Temperature, article, January 21, 1986; United States. (digital.library.unt.edu/ark:/67531/metadc886428/: accessed October 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.