A study is presented on a process and system of heat exchangers, in which the nuclear heat from a high-temperature gas-cooled reactor is transferred to produce reducing gas for steel making, assuming a primary circuit outlet gas temperature of 1, 000°C and pressure of 40kg/cmcm
2. A consideration is given to the safety of the plant and to eliminating contamination of the process materials and products. Criteria are derived for making the system optimum, selecting the most appropriate method of analysis and determining the most suitable type of heat exchanger. Technical problems requiring solution through research and development of the plant are identified. The results are formulated in a proposal for an indirect heat exchanging system embodying an intermediate helium loop of 45kg/cmcm
2 pressure, installed between the primary and process loops. The optimum temperature for the intermediate loop is 925°C and that for the process loop 850°C. Further, from the standpoint of reliability and capital cost, the heat exchangers should be divided into two parts for high and for low temperature uses. The best operating conditions are determined for the highest temperature part of the high temperature heat exchanger of parallel flow type.
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