1 PDF - David Van Den Einde, Internal temperature elevation of a closed power cycle's input heat resulting from differentials in excess enthalpies of solution

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Volume 26: Pages 343-346, 2013

Internal temperature elevation of a closed power cycle's input heat resulting from
differentials in excess enthalpies of solution

David Van Den Eindea)

1284 170th St., Bejou, Minnesota 56516, USA

A closed power cycle using a supercritical solvent and solid solute as its working fluid is described. The difference in excess enthalpies of solution between high and low solvent densities caused by retrograde solubility in the supercritical region serves to internally elevate the temperature of a portion of the cycle's Q1
heat input before that energy affects gas expansion. The effect this internal temperature elevation has on cycle efficiency poses a dilemma for accepted definitions of the second law of thermodynamics.

Cet article décrit un cycle fermé de puissance qui utilise un solvant supercritique et un solvable solide comme fluide de travail. La différence des enthalpies excessives des solutions entre les densités haute et basse du solvant causée par la solubilité rétrograde dans la région supercritique sert à élever internement la température d'une partie de l'entrée Q1 du cycle de chaleur avant que cette énergie a influence sur
l'expansion du gaz. Le résultat de cette augmentation de température interne sur le rendement du cycle pose un dilemme pour les définitions acceptées de la deuxième loi de la thermodynamique.

Keywords: Supercritical Solvent, Excess Enthalpy, Solid Solute, Power Cycle, Carnot Efficiency, Retrograde Solubility

Received: February 6, 2012; Accepted: April 13, 2013; Published Online: June 17, 2013

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