Alternate VHTR/HTE INterface for mitigating tritum.

Vilim, R. ; Nuclear Engineering Division

关键词: BUILDING MATERIALS;    CREEP;    EFFICIENCY;    ELECTROLYSIS;    HEAT PUMPS;    HYDROGEN;    PERFORMANCE;    PROCESS HEAT;    TRANSPORT;    TRITIUM;   

DOI  :  10.2172/951247
RP-ID  :  ANL-GENIV-102
PID  :  OSTI ID: 951247
Others  :  TRN: US200911%%452

美国|英语

来源: SciTech Connect

【 摘 要 】

High temperature creep in structures at the interface between the nuclear plant and the hydrogen plant and the migration of tritium from the core through structures in the interface are two key challenges for the Very High Temperature Reactor (VHTR) coupled to the High Temperature Electrolysis (HTE) process. The severity of these challenges, however, can be reduced by lowering the temperature at which the interface operates. Preferably this should be accomplished in a way that does not reduce combined plant efficiency and other performance measures. A means for doing so is described in this report. A heat pump is used to raise the temperature of near-waste heat from the PCU to the temperature at which nine-tenths of the HTE process heat is needed. In addition to mitigating tritium transport and creep of structures, structural material commodity costs are reduced and plant efficiency is increased by a couple of percent.