A thermochemical hydrogen production system based on a high-temperature fusion reactor blanket
A conceptual fusion synfuel production system has been developed with the unique features of: (1) a fusion blanket producing high-temperature (1250/sup 0/C) process heat, and (2) the GA sulfur-iodine thermochemical cycle. The system incorporates a two-zone blanket which achieves a tritium breeding ratio of 1.1 while delivering a high fraction (30%) of the fusion heat at high temperatures (1250/sup 0/C). The multiple barriers to tritium permeation in the blanket design permit the hydrogen product to meet 10CFR20 regulatory requirements without stringent requirements on the tritium recovery systems. A ceramic heat exchanger, incorporating SiC tubes and headers to contain the process stream and a cooled, Inconel 718 pressure shell to contain the helium, was designed for transferring the heat from the high-temperature coolant to the process. A good heat-line match of the blanket heatsource temperature distribution to the requirements of the thermochemical plant was attained under the dual goal of maximizing process efficiency and minimizing the hydrogen cost. The results are a process efficiency of 45%, an overall plant efficiency of 43%, and an estimated cost of hydrogen of $12 to $14 per Gigajoule of hydrogen ($11 to $13 per million Btu).
- Research Organization:
- GA Technologies Inc., P.O. Box 85608, San Diego, CA 92138
- OSTI ID:
- 6223698
- Report Number(s):
- CONF-830406-; TRN: 85-001689
- Journal Information:
- Nucl. Technol./Fusion; (United States), Vol. 4:2; Conference: 5. topical meeting on technology of fusion energy, Knoxville, TN, USA, 26 Apr 1983
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
HYDROGEN PRODUCTION
THERMOCHEMICAL PROCESSES
PROCESS HEAT REACTORS
THERMONUCLEAR REACTORS
BREEDING BLANKETS
BREEDING RATIO
COMPATIBILITY
COST
COST BENEFIT ANALYSIS
HEAT EXCHANGERS
HELIUM
HYDROGEN
INCONEL 718
IODINE
PRESSURE VESSELS
SILICON CARBIDES
SULFUR
TEMPERATURE DISTRIBUTION
THERMAL EFFICIENCY
VERY HIGH TEMPERATURE
ALLOYS
CARBIDES
CARBON COMPOUNDS
CHROMIUM ALLOYS
CONTAINERS
CONVERSION RATIO
EFFICIENCY
ELEMENTS
FLUIDS
GASES
HALOGENS
INCONEL ALLOYS
MOLYBDENUM ALLOYS
NICKEL ALLOYS
NICKEL BASE ALLOYS
NIOBIUM ALLOYS
NONMETALS
RARE GASES
REACTOR COMPONENTS
REACTORS
SILICON COMPOUNDS
080102* - Hydrogen- Production- Thermochemical Processes
700200 - Fusion Energy- Fusion Power Plant Technology