Menu
Search
Filters
Close
Menu

Materials Selection Challenges for Geothermal Energy Projects

Picture for Materials Selection Challenges for Geothermal Energy Projects
Available for download

This paper describes some of the materials and process challenges facing geothermal energy developers targeting efficiency improvements and extremes of aggressive geothermal fluid chemistries and temperatures.

 

Product Number: 51317--9258-SG
ISBN: 9258 2017 CP
Author: Keith Lichti
Publication Date: 2017
Industry: Energy Generation
$0.00
$20.00
$20.00

Selection of geothermal energy resources for development historically targeted alkali brines having low to moderate H2S concentrations. Conservative energy generation processes that minimised the risk of scaling were used and materials selection rules of thumb were developed to ensure long service lifetimes for energy equipment: avoidance of air ingress use of low strength steels for H2S service and use of suitable stainless steels for more demanding service and for corrosive steam condensates. These traditional rules are being augmented for more aggressive acidic environments encountered in some geothermal fields in Engineered Geothermal Systems and in new energy extraction processes designed to improve efficiency through utilisation of geothermal fluids to lower temperatures. Near magma and volcanic environments are challenging 21st century developers now in the same way as geothermal steam and two-phase fluids challenged the pioneers of geothermal energy in Italy and New Zealand in the middle of last century. Selection of geothermal energy resources for development historically targeted alkali brines having low to moderate H2S concentrations. Conservative energy generation processes that minimised the risk of scaling were used and materials selection rules of thumb were developed to ensure long service lifetimes for energy equipment: avoidance of air ingress use of low strength steels for H2S service and use of suitable stainless steels for more demanding service and for corrosive steam condensates. These traditional rules are being augmented for more aggressive acidic environments encountered in some geothermal fields in Engineered Geothermal Systems and in new energy extraction processes designed to improve efficiency through utilisation of geothermal fluids to lower temperatures. Near magma and volcanic environments are challenging 21st century developers now in the same way as geothermal steam and two-phase fluids challenged the pioneers of geothermal energy in Italy and New Zealand in the middle of last century.

Key words: Geothermal, Materials Selection, Production Extremes, Solids, Acids, High Temperatures, Risk Based Assessment.

Selection of geothermal energy resources for development historically targeted alkali brines having low to moderate H2S concentrations. Conservative energy generation processes that minimised the risk of scaling were used and materials selection rules of thumb were developed to ensure long service lifetimes for energy equipment: avoidance of air ingress use of low strength steels for H2S service and use of suitable stainless steels for more demanding service and for corrosive steam condensates. These traditional rules are being augmented for more aggressive acidic environments encountered in some geothermal fields in Engineered Geothermal Systems and in new energy extraction processes designed to improve efficiency through utilisation of geothermal fluids to lower temperatures. Near magma and volcanic environments are challenging 21st century developers now in the same way as geothermal steam and two-phase fluids challenged the pioneers of geothermal energy in Italy and New Zealand in the middle of last century. Selection of geothermal energy resources for development historically targeted alkali brines having low to moderate H2S concentrations. Conservative energy generation processes that minimised the risk of scaling were used and materials selection rules of thumb were developed to ensure long service lifetimes for energy equipment: avoidance of air ingress use of low strength steels for H2S service and use of suitable stainless steels for more demanding service and for corrosive steam condensates. These traditional rules are being augmented for more aggressive acidic environments encountered in some geothermal fields in Engineered Geothermal Systems and in new energy extraction processes designed to improve efficiency through utilisation of geothermal fluids to lower temperatures. Near magma and volcanic environments are challenging 21st century developers now in the same way as geothermal steam and two-phase fluids challenged the pioneers of geothermal energy in Italy and New Zealand in the middle of last century.

Key words: Geothermal, Materials Selection, Production Extremes, Solids, Acids, High Temperatures, Risk Based Assessment.

Product tags
Also Purchased
Picture for 09377 Evaluation of Corrosion Resistance for Materials in Geothermal Applications
Available for download

09377 Evaluation of Corrosion Resistance for Materials in Geothermal Applications

Product Number: 51300-09377-SG
ISBN: 09377 2009 CP
Author: Markus Finke, Ralph Babler, Ali Saadat, Rolf Kirchheiner and Andreas Burkert
Publication Date: 2009
$20.00
Picture for Corrosion Resistance of the Super-Austenitic Stainless Steel UNS S31266 for Geothermal Applications
Available for download

Corrosion Resistance of the Super-Austenitic Stainless Steel UNS S31266 for Geothermal Applications

Product Number: 51317--8825-SG
ISBN: 8825 2017 CP
Author: Ralph Baessler
Publication Date: 2017
$20.00

Update on recent experiences from laboratory tests performed at service conditions for geothermal applications.  Incorporated in a catalogue of suitable materials for applications geothermal power plants. Users shall be enabled to have a basis for designing such facilities.
Picture for Geothermal Corrosion: High-Temperature Pitting of Stainless Steels and Ni-Alloys
Available for download

Geothermal Corrosion: High-Temperature Pitting of Stainless Steels and Ni-Alloys

Product Number: 51317--9269-SG
ISBN: 9269 2017 CP
Author: Walter Bogaerts
Publication Date: 2017
$20.00

The temperature dependence of the pitting corrosion resistance of a number of stainless steels, Fe-Cr-Ni and Fe-Cr-Ni-Mo materials in a series of high-temperature high-pressure chloride solutions, with or without addition of various (inhibitive) anions: SO4=, HCO3-, PO43-, OH-, etc.
Categories
Industry
Recently viewed
Popular tags
View all

Association for Materials Protection and Performance

© AMPP All Rights Reserved.
Membership Terms of Content Use
Contact Customer Support