Results 1 to 10 of about 270,471 (191)

An Entropy Generation Rate Model for Tropospheric Behavior That Includes Cloud Evolution [PDF]

open access: yesEntropy, 2023
A postulate that relates global warming to higher entropy generation rate demand in the tropospheric is offered and tested. This article introduces a low-complexity model to calculate the entropy generation rate required in the troposphere.
Jainagesh A. Sekhar
doaj   +4 more sources

Performance Comparison of Different Flat Plate Solar Collectors by Means of the Entropy Generation Rate Using Computational Fluid Dynamics [PDF]

open access: yesEntropy, 2023
In this work, a numerical analysis of three different flat plate solar collectors was conducted using their entropy generation rates. Specifically, the Computational Fluid Dynamics (CFD) technique was used to compare the detailed performance of ...
J. J. Ramírez-Minguela   +6 more
doaj   +2 more sources

Self-Organization, Entropy Generation Rate, and Boundary Defects: A Control Volume Approach. [PDF]

open access: yesEntropy (Basel), 2021
Self-organization that leads to the discontinuous emergence of optimized new patterns is related to entropy generation and the export of entropy. Compared to the original pattern that the new, self-organized pattern replaces, the new features could involve an abrupt change in the pattern-volume. There is no clear principle of pathway selection for self-
Sekhar JA.
europepmc   +5 more sources

Entropy Generation Rates in Two-Dimensional Rayleigh–Taylor Turbulence Mixing [PDF]

open access: yesEntropy, 2018
Entropy generation rates in two-dimensional Rayleigh–Taylor (RT) turbulence mixing are investigated by numerical calculation. We mainly focus on the behavior of thermal entropy generation and viscous entropy generation of global quantities with ...
Xinyu Yang   +4 more
doaj   +3 more sources

Unsteady Volumetric Entropy Generation Rate in Laminar Boundary Layers [PDF]

open access: yesEntropy, 2006
The prediction of the entropy generation rate in laminar shear layers is treated as steady, even in the presence of high levels of free stream turbulence.
D. Hernon, E. J. Walsh
doaj   +3 more sources

Entropy Generation Rate Minimization for Methanol Synthesis via a CO2 Hydrogenation Reactor. [PDF]

open access: yesEntropy (Basel), 2019
The methanol synthesis via CO2 hydrogenation (MSCH) reaction is a useful CO2 utilization strategy, and this synthesis path has also been widely applied commercially for many years. In this work the performance of a MSCH reactor with the minimum entropy generation rate (EGR) as the objective function is optimized by using finite time thermodynamic and ...
Li P, Chen L, Xia S, Zhang L.
europepmc   +5 more sources

Entropy generation of nanofluid flow in a microchannel heat sink

open access: yesResults in Physics, 2018
Present study aims to investigate the effects of the presence of nano sized TiO2 particles in the base fluid on entropy generation rate in a microchannel heat sink.
Eyuphan Manay   +2 more
doaj   +3 more sources

Effects of Convective Heating on Entropy Generation Rate in a Channel with Permeable Walls [PDF]

open access: yesEntropy, 2013
This study deals with the combined effects of convective heating and suction/injection on the entropy generation rate in a steady flow of an incompressible viscous fluid through a channel with permeable walls.
Adetayo Samuel Eegunjobi   +1 more
doaj   +2 more sources

Entropy generation rate minimization for sulfur trioxide decomposition membrane reactor

open access: yesEnergy Reports, 2022
Sulfuric acid decomposition is the critical reaction in sulfur-iodide thermochemical cycle to produce oxygen. Sulfuric acid can decompose spontaneously into sulfur trioxide (SO3) and water, and SO3 continues to decompose into oxygen and sulfur dioxide ...
Rui Kong   +4 more
doaj   +2 more sources

Minimization of entropy generation rate in methanol steam reforming reactor

open access: yesCase Studies in Thermal Engineering
The methanol steam reforming (MSR) reaction is a prospective method in hydrogen generation because of its operability and high conversion efficiency. Most of the current thermodynamic studies involving MSR use classical thermodynamic methods, while fewer
Rui Kong   +3 more
doaj   +2 more sources

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