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Energy optimization of a Sulfur-Iodine thermochemical nuclear hydrogen production cycle
Juarez-Martinez, L.C.,Espinosa-Paredes, G.,Vazquez-Rodriguez, A.,Romero-Paredes, H. Korean Nuclear Society 2021 Nuclear Engineering and Technology Vol.53 No.6
The use of nuclear reactors is a large studied possible solution for thermochemical water splitting cycles. Nevertheless, there are several problems that have to be solved. One of them is to increase the efficiency of the cycles. Hence, in this paper, a thermal energy optimization of a Sulfur-Iodine nuclear hydrogen production cycle was performed by means a heuristic method with the aim of minimizing the energy targets of the heat exchanger network at different minimum temperature differences. With this method, four different heat exchanger networks are proposed. A reduction of the energy requirements for cooling ranges between 58.9-59.8% and 52.6-53.3% heating, compared to the reference design with no heat exchanger network. With this reduction, the thermal efficiency of the cycle increased in about 10% in average compared to the reference efficiency. This improves the use of thermal energy of the cycle.
Moya, S.A.,Vidal, M.,Abarca, G.,Martinez, C.,Guerchais, V.,Le Bozec, H.,Garland, M.T.,Rodriguez, S.,Aguirre, P. Elsevier 2010 Inorganic chemistry communications Vol.13 No.12
<P><B>Abstract</B></P><P>The synthesis and characterization of new ruthenium(II) carbonyl complexes containing polypyridine and triphenylphosphine ligands is reported. Crystallographic information obtained for the <I>trans-</I>PPh<SUB>3</SUB>-[Ru(biq)(PPh<SUB>3</SUB>)<SUB>2</SUB>(CO)]Cl<SUB>2</SUB> complex (biq=2,2’-biquinoline<B>)</B> reveals five-coordination on the metal. The complexes were studied as catalysts in hydrogen transfer reactions in basic solution. Turnover frequencies in the 2250-817h<SUP>-1</SUP> range were determined in 1 hour of reaction with a substrate/catalysts ratio of 830.</P> <P><B>Graphical Abstract</B></P><P>The synthesis and characterization of new ruthenium(II) carbonyl complexes containing polypyridine and triphenylphosphine ligands is reported. The complexes were studied as catalysts in hydrogen transfer reactions in basic solution.<ce:figure id='f0015'></ce:figure></P>