Abstract
The main objective of the present work was to analyze thermodynamic performance for a supercritical water reactor (SCWR) concept carried out via an entropy generation approach. In this work, a square array of subchannel was applied. Using powerful variation of thermophysical properties in the supercritical region of water can lead to an efficient nuclear plant design. From the thermodynamic point of view, desirable results can be gained when minimum entropy is produced at the supercritical point, which consequently leads to higher system efficiency. Effects of important thermal hydraulic parameters such as mass flux, flow Reynolds number, system heat flux, system pressure and system temperature on the generation of entropy within a SCWR subchannel were evaluated. It was found that regions closer to the supercritical point caused the entropy generation to decrease significantly.
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