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An overview is presented of the technical and economic feasibility for the development of a very high-temperature reactor (VHTR) and associated processes. A critical evaluation of VHTR technology for process temperatures of 1400 to 2UUU°F is made. Additionally, an assessment of potential market impact is made to determine the commercial viability of the reactor system. It is concluded that VHTR process heat in the range of 1400 to 1500°F is attainable with near-term technology. However, process heat in excess of 1600°F would require considerably more materials development. The potential for the VHTR could include a major contribution to synthetic fuel, hydrogen, steel, and fertilizer-production and to systems for transport and storage of high-temperature heat. A recommended development program including projected costs is presented.

Electrical resistivity data for metals which might he resistance-heated in heat-transfer tests have been compiled and are given as a function of temperature in ten figures. y LEGAL NOTICEThis reporl was prepared ae an account of Government sponsored work Neither the United States nor the Commission nor any person acting on behalf of the Commission A Makes any warranty or representation expressed or implied with respect to the accu racy completeness or usefulness of the information contained In this report or that the use of any Information apparatus method or process disclosed In this report may not infringe privately owned rights or B Assumes any liabilities with respect to the use of or for damages resulting from the use of any information apparatus method or process disclosed In this report As used in the above person acting on behal/ of the Commission Includes any em ployee or contractor of the Commission or employee of such contractor to the extent that such employee or contractor of the Commission or employee of such contractor prepares disseminates or provides access to any information pursuant to his employment or contract with the Commission or his employment with such contractor NOTICE This document contains information of a preliminary nature and was prepared primarily for internal use at the Oak Ridge National Laboratory. It is subject to revision or correction and therefore does not represent a final report.Tk* information is not to be abstracted, »*V.-mted or otherwise given public digeemieatSMl without the approval of the ORNL patent ! Legal as* inferiaotioR Castrol Dapartmcat.