Thermochemical processes for solar hydrogen production
The use of solar energy to produce hydrogen from water is an attractive concept that merits a continuing research and development effort. The base technology being developed for solar thermal power can be applied effectively in the production of hydrogen from water. Hydrogen production could be based on advanced water electrolysis and economic solar hydrogen become an eventual reality even if advanced processes do not prove to be feasible. Thermochemical cycles for decomposing water promise higher efficiencies if cycles can be developed that match the characteristics of solar heat sources. At present, cycles based on sulfuric acid are the most fully developed processes and they can be adapted to solar thermal systems and serve as standards of comparison for new cycles as they are discovered and developed. Advanced cycles based on solids decomposition reactions should interface advantageously with solar thermal systems and several cycles based on such reactions are under experimental evaluation.
- Research Organization:
- Los Alamos National Lab., NM (USA)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 5164484
- Report Number(s):
- LA-UR-82-1895; CONF-8205112-1; ON: DE82019575
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
080102 -- Hydrogen-- Production-- Thermochemical Processes
14 SOLAR ENERGY
140505* -- Solar Energy Conversion-- Photochemical
Photobiological
& Thermochemical Conversion-- (1980-)
ALKALINE EARTH METAL COMPOUNDS
BISMUTH COMPOUNDS
BISMUTH SULFATES
CHALCOGENIDES
CHEMICAL REACTIONS
CONVERSION
DECOMPOSITION
ELECTROLYSIS
ENERGY
ENERGY CONVERSION
HALIDES
HALOGEN COMPOUNDS
HEAT
HYDROGEN COMPOUNDS
HYDROGEN PRODUCTION
INORGANIC ACIDS
IODIDES
IODINE COMPOUNDS
LYSIS
MAGNESIUM COMPOUNDS
MAGNESIUM IODIDES
MAGNESIUM SULFATES
OXIDES
OXYGEN COMPOUNDS
PROCESS HEAT
SOLAR ENERGY CONVERSION
SOLAR PROCESS HEAT
SULFATES
SULFUR COMPOUNDS
SULFURIC ACID
THERMOCHEMICAL PROCESSES