Solar thermochemical Dy₂O₃/DyO water splitting cycle for hydrogen production
by R.R. Bhosale; A. Kumar; F. AlMomani; S. Yousefi; D. Dardor; M.H. Usmani; M.S. Anis; U. Ghosh
International Journal of Exergy (IJEX), Vol. 22, No. 1, 2017

Abstract: The thermodynamic analyses of the dysprosium oxide-based water splitting (Dy-WS) cycle are reported in this paper. The first step of the Dy-WS cycle involves thermal reduction of Dy₂O₃, whereas water splitting reaction is the following second step. HSC simulation experiments (by varying the partial pressure of O₂ and reaction temperature) are performed to identify the equilibrium compositions associated with both the above given steps. Exergy and energy analysis of the Dy-WS cycle is performed to estimate various solar reactor process parameters including the solar-to-fuel conversion efficiency with and without heat recuperation. The HSC simulation results indicate that the solar-to-fuel conversion efficiency for the Dy-WS cycle is comparable with the ceria cycle.

Online publication date: Mon, 26-Dec-2016

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