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Generalized Thermodynamic Optimization for Iron and Steel Production Processes: Theoretical Exploration and Application Cases [PDF]

open access: yesEntropy, 2016
Combining modern thermodynamics theory branches, including finite time thermodynamics or entropy generation minimization, constructal theory and entransy theory, with metallurgical process engineering, this paper provides a new exploration on generalized
Lingen Chen, Huijun Feng, Zhihui Xie
doaj   +4 more sources

Progresses in generalized thermodynamic dynamic-optimization of irreversible processes [PDF]

open access: yesZhongguo Kexue Jishu Kexue/Scientia Sinica Technologica, 2019
Generalized thermodynamic optimization theory is one of the research hotspots in the field of thermal science and technology. Firstly, the emergences and developments of finite time thermodynamics, entropy generation minimization, entransy theory and generalized thermodynamic optimization are reviewed in this paper, respectively.
Lingen Chen, Shaojun Xia
exaly   +2 more sources

Constructal thermodynamic optimization for a novel Kalina-organic Rankine combined cycle to utilize waste heat

open access: yesEnergy Reports, 2021
Kalina cycle and organic Rankine cycle have different optimal heat source temperatures. To realize cascade utilization of low-temperature waste heat, a model of novel Kalina-organic Rankine combined cycle is established by using a dual-pressure Kalina ...
Zhixiang Wu   +3 more
doaj   +3 more sources

Direct Optimization for Cycle Working Fluids Using a Thermodynamic Generalized Fluid Approach

open access: yesSolarPACES Conference Proceedings
Fluid blends as working fluids in solar thermal power cycles have been shown to promise an even higher efficiency than pure fluids. Rather than exploring specific blends, we propose an approach in which we directly optimize for a working fluid ...
Justin Begay, Daniel Banuti
doaj   +4 more sources

Constructal Optimizations of Line-to-Line Vascular Channels with Turbulent Convection Heat Transfer

open access: yesEntropy, 2022
The multi-scale line-to-line vascular channels (LVCs) widely exist in nature because of their excellent transmission characteristics. In this paper, models of LVCs with turbulent convection heat transfer are established.
Daoguang Lin   +4 more
doaj   +1 more source

Multi-Objective Constructal Design for Square Heat-Generation Body with “Arrow-Shaped” High-Thermal-Conductivity Channel

open access: yesEnergies, 2022
Based on the square heat-generation body (HGB) with “arrow-shaped” high-thermal-conductivity channel (HTCC) model established in the previous literature, we performed multi-objective optimization (MOO) with maximum temperature difference (MTD ...
Hongwei Zhu   +4 more
doaj   +1 more source

Multi-Objective Constructal Design for Quadrilateral Heat Generation Body with Vein-Shaped High Thermal Conductivity Channel

open access: yesEntropy, 2022
Based on the quadrilateral heat generation body (HGB) proposed by previous literature, the multi-objective constructal design is performed. Firstly, the constructal design is performed by minimizing the complex function composed of the maximum ...
Hongwei Zhu   +4 more
doaj   +1 more source

Constructal Optimization of Rectangular Microchannel Heat Sink with Porous Medium for Entropy Generation Minimization

open access: yesEntropy, 2021
A model of rectangular microchannel heat sink (MCHS) with porous medium (PM) is developed. Aspect ratio of heat sink (HS) cell and length-width ratio of HS are optimized by numerical simulation method for entropy generation minimization (EGM) according ...
Wenlong Li   +4 more
doaj   +1 more source

Benchmarking Thermodynamic Models for Optimization of PSA Oxygen Generators

open access: yesJ, 2023
In this review, the authors conducted benchmarks for three thermodynamic models to analyze PSA-based medical oxygen concentrator (MOC) systems to allow for optimization and operational flexibility. PSA oxygen generator plants are good medical-grade oxygen sources, a crucial tool in healthcare from the primary to the tertiary level.
Michael L. Carty, Stephane Bilodeau
openaire   +2 more sources

Multi-Objective Constructal Optimization for Marine Condensers

open access: yesEnergies, 2021
A marine condenser with exhausted steam as the working fluid is researched in this paper. Constructal designs of the condenser are numerically conducted based on single and multi-objective optimizations, respectively. In the single objective optimization,
Huijun Feng   +4 more
doaj   +1 more source

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