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Title: Optimum Reactor Outlet Temperatures for High Temperature Gas-Cooled Reactors Integrated with Industrial Processes

This report summarizes the results of a temperature sensitivity study conducted to identify the optimum reactor operating temperatures for producing the heat and hydrogen required for industrial processes associated with the proposed new high temperature gas-cooled reactor. This study assumed that primary steam outputs of the reactor were delivered at 17 MPa and 540°C and the helium coolant was delivered at 7 MPa at 625–925°C. The secondary outputs of were electricity and hydrogen. For the power generation analysis, it was assumed that the power cycle efficiency was 66% of the maximum theoretical efficiency of the Carnot thermodynamic cycle. Hydrogen was generated via the hightemperature steam electrolysis or the steam methane reforming process. The study indicates that optimum or a range of reactor outlet temperatures could be identified to further refine the process evaluations that were developed for high temperature gas-cooled reactor-integrated production of synthetic transportation fuels, ammonia, and ammonia derivatives, oil from unconventional sources, and substitute natural gas from coal.
Authors:
Publication Date:
OSTI Identifier:
1017884
Report Number(s):
INL/EXT-11-21537
TRN: US1103358
DOE Contract Number:
DE-AC07-05ID14517
Resource Type:
Technical Report
Research Org:
Idaho National Laboratory (INL)
Sponsoring Org:
DOE - NE
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; AMMONIA; COAL; COOLANTS; EFFICIENCY; ELECTRICITY; ELECTROLYSIS; GAS COOLED REACTORS; HELIUM; HYDROGEN; METHANE; NATURAL GAS; POWER GENERATION; PRODUCTION; SENSITIVITY; STEAM; THERMODYNAMIC CYCLES Next Generation Nuclear Plant Project; NGNP