Abstract
A thermochemical cycle for hydrogen production is a process in which water is used as a feedstock along with a non-fossil high temperature heat source to produce H2 and O2 as product gases. The water splitting process is accomplished through a closed loop sequence of chemical reaction steps in which the chemical reagents are continuously recycled and reused in the process with essentially no loss of material. Practical thermochemical cycles, as currently envisioned, require input temperatures of 1200K for the highest temperature chemical step, and operate at a thermal efficiency of about 50%. Here, the thermal efficiency is defined as the higher heating value of the H2 produced divided by thermal heat per mole of H2 delivered by the high temperature heat source. High temperature gas-cooled reactors have been considered as heat source for these cycles. Electrical energy for process equipment is required in addition to high temperature heat for operation of thermochemical hydrogen plants.
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O. Krikorian, L. Brown, J. Norman Synfuels from fusion — using the tandem mirror reactor and a thermochemical cycle to production of hydrogen, November 1. 1982.
Engels, H. Knoche, K. F. Vapor Pressures of the System HJ/H2O/J2 and H2, Int. J. Hydrogen Energy, Vol. 11, No. 11, 703–707, (1986)
Konzeptstudie zur Wasserstofferzeugung mit einem solar betriebenen Schwefel-Jod-Prozeβ, Juli 1989, Lehrstuhl für Technische Thermodynamik der RWTH-Aachen.
Entwiklung und Analyse von Verfahrenskonzepten zur chemischen Energiespeicherung beim solarbetriebenen Schwefel-Jod-Prozeß zur Wasserstofferzeugung, Juni 1988, Lehrstuhl für technische Thermodynamik der RWTH-Aachen.
Brown, L. , Norman, J. , Synfuels from fusion — using the tandem mirror reactor and a thermochemical cycle to production of hydrogen, November 1. 1982.
Rowe, D. S. Synfuels from fusion — using the tandem mirror reactor and a thermochemical cycle to production of hydrogen, November 1. 1982.
“JANAF Thermochemical Tables”, DOW Chemical Company, Midland, Michigan, Sep. 30, 1977.
Winnacker, K. , Küchler, L. Chemische Technologie, Band 2, Anorganische Technologie II, Carl Hanser Verlag, München, 1970.
Lennartz, H. “ Experimentelle Untersuchungen zum Dampf-Gleichgewicht des Systems H2O + H2SO4”, Diplomarbeit an der RWTH-Aachen, Oktober 1980.
“ Wellman Lord in Europe”, Sulphur No. 195, March-April 1988.
Barin, I. Thermochemical Data of Pure Substances, VCH Verlaggesellschaft mbH, Weinheim, 1989.
Bosen, A. , Engels, H. , Description of the phase equilibrium of sulfuric acid with the NRTL-equation and a solvation model in a wide concentration and temperature range, Fluid Phase Equilibriq, 43, 1988.
Hammache, A. , Bilgen, E. , Critical evaluation of thermal efficiency and cost of HIGH TEMPERATURE SOLAR HEAT from central RECEIVER SYSTEM to use in thermochemical process prepared for the 10th technical workshop of IEA, 1987/07/27–29, Tokyo, Japan.
Chase, D. Plant cost vs capacity. Modern cost engeneering method and data. Chemical Engeneering, McGraw-Hill, New York, S. 225.
Jung, J. Aspekte der Vorausberechnung von Anlagekosten bei der Pro jektierung verfahrenstechnischerAnlagen. Chem. Technik, 12 (1983), S. 9-
Besenbruch, G. E. , McKorkle, K. H. Synfuels from fusion — using the tandem mirror reactor and a thermochemical cycle to production of hydrogen, November 1. 1982.
J. E. Funk The development status of solar thermochemical hydrogen production, Sept. 1987, SAND 86–8058.
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© 1991 Springer-Verlag Berlin Heidelberg
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Knoche, K.F. (1991). Thermochemical H 2- Production with Sulfur-Iodine Process and Solar Energy Adaptation. In: Becker, M., Funken, KH., Schneider, G. (eds) Solar Thermal Energy Utilization. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-52342-7_7
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DOI: https://doi.org/10.1007/978-3-642-52342-7_7
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