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Keywords: entropy
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Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Energy Resour. Technol. December 2022, 144(12): 122101.
Paper No: JERT-22-1201
Published Online: June 10, 2022
... temperature of the ideal parts of the two isotopes. A statistical model for the physical and thermodynamic behaviors is developed based on their known properties, where the equations of the partition function, entropy, and specific heat are constructed in such a way where one term applies to the ideal part...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Energy Resour. Technol. October 2022, 144(10): 102107.
Paper No: JERT-22-1003
Published Online: March 22, 2022
..., enthalpy, and entropy of the cycle states are illustrated for aforesaid conditions as per working fluids properties in the form of quadripartite diagrams. Subsequently, the cycle was analyzed thermodynamically. The coeffcient of performance (COP) was performed for refrigeration (cooling procedure), heat...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Energy Resour. Technol. March 2010, 132(1): 012601.
Published Online: March 26, 2010
...Adriano Sciacovelli; Vittorio Verda The aim of the paper is to investigate possible design modifications in tubular solid oxide fuel cell geometry to increase its performance. The analysis of the cell performances is conducted on the basis of the entropy generation. The use of this technique makes...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Energy Resour. Technol. December 2006, 128(4): 325–334.
Published Online: September 28, 2005
..., and condensation inside the wave rotor channels are described in a wave and phase-change diagram. The thermodynamic process is shown in pressure-enthalpy and temperature-entropy diagrams. Based on the described thermodynamic model, a computer program was generated to evaluate the performance of R718 baseline...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Energy Resour. Technol. June 2003, 125(2): 85–93.
Published Online: June 4, 2003
...K. O. Homan, ASME Associate Member This paper presents results for the entropy generated internally during the charging and discharging processes of a direct, sensible thermal energy store. The two processes correspond to the inflow of either a low or high temperature liquid stream...
Topics: Entropy, Storage
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Energy Resour. Technol. March 2003, 125(1): 1–8.
Published Online: March 14, 2003
...Elias P. Gyftopoulos; Michael R. von Spakovsky In previous publications, it has been shown that entropy is a measure of the quantum-theoretic shape of the constituents of a system. In this paper, we present examples of quantum-theoretic shapes of some systems each consisting of one unit of a single...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Energy Resour. Technol. September 2002, 124(3): 204–213.
Published Online: August 6, 2002
...Bekir Sami Yilbas Nonequilibrium energy transport taking place in the surface region of the metallic substrate due to laser short-pulse heating results in entropy production in electron and lattice systems. The entropy analysis gives insight into the irreversible processes taking place...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Energy Resour. Technol. June 2001, 123(2): 110–118.
Published Online: December 13, 2000
...Elias P. Gyftopoulos The prevailing beliefs in the scientific and engineering literature are that: (i) thermodynamics is explained and justified by statistical mechanics; (ii) entropy is a statistical measure of disorder; and (iii) for given values of energy, volume, and amounts of constituents...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Energy Resour. Technol. September 2000, 122(3): 147–152.
Published Online: March 31, 2000
...Hui He; Mohamad Metghalchi; James C. Keck A simple model has been developed to estimate the sensible thermodynamic properties such as Gibbs free energy, enthalpy, heat capacity, and entropy of hydrocarbons over a wide range of temperatures with special attention to the branched molecules. The model...