He-Water boiling tests with PCHE and its MARS Analysis

The main advantage in High Temperature Gas Cooled Reactors (HTGRs) is to produce both of electricity and hydrogen. We consider several methods such as SI cycle, steam electrolysis, and so on for the hydrogen production in HTGRs. When selecting the steam electrolysis for hydrogen production, a lot of steam with high temperature should be generated. We think that the PCHE can be one of good candidates for the production of the superheated steam, because the PCHE has large surface area per unit volume, high heat transfer coefficient, and wide operation range. Thermalhydraulic performances were investigated in the several conditions by previous researches. In this study, we produced superheated steam using the He-Water boiling test loop with PCHE. Numerical solutions without heat loss and with heat loss were obtained by using MARS code