Constructal design combined with entropy generation minimization for solid–gas reactors

Azoumah, Y.; Neveu, Pierre; Mazet, Nathalie

doi:10.1016/j.ijthermalsci.2005.10.006

Cited by 52 publications

(55 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The constructal optimization of a solid-gas reactor was carried out first by Azoumah et al [15,16] based on rectangular element, as shown in Figure 2, where the area A 0 of the element is given but geometric aspect ratio is free. Firstly, the geometric shape of elemental volume is optimized with entropy generation minimization objective under constraint conditions.…”

Section: "Volume-point" Heat and Mass Transfer Model Of A Solid-gas Rmentioning

confidence: 99%

“…A typical method, i.e., the constructal "volume-point" model [14] , was expanded and used to optimize heat and mass transfer in a solid-gas reactor [15,16] . The "volume-point" conduction problem could be described as how to effectively conduct the heat generated in a fixed volume to a heat sink located on its boundary.…”

Section: Introductionmentioning

confidence: 99%

“…The main component of a solid-gas reactor is a porous material mixed with reactive salt [15,16] . When the reactive gas enters the reactor, a chemical reaction occurs, and a new solid is produced with the generation or consumption of heat.…”

Section: Introductionmentioning

confidence: 99%

“…The performance of a solid-gas reactor depends on speed of heat transfer and gas diffusion of the reactor. To optimize both heat and mass transfer, Azoumah et al [15,16] expanded the "volume-point" heat conduction model to the "volume-point" heat and mass transfer model and optimized a solid-gas reactor by using rectangular elements with entropy generation minimization objective [19][20][21] . Based on refs.…”

Section: Introductionmentioning

confidence: 99%

“…Based on refs. [15,16], this paper will carry out the constructal optimization for a solid-gas reactor by using triangular elements [22] with entropy generation minimization objective.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Constructal optimization for a solid-gas reactor based on triangular element

Zhou

Chen

Sun

2008

Sci. China Ser. E-Technol. Sci.

View full text Add to dashboard Cite

Entropy generation minimization for heat and mass transfer process in a solid-gas reactor is carried out based on constructal theory by using triangular elemental area. The aspect ratio of the triangular elemental area is optimized under constraint conditions. A number of optimal triangular elements are assembled to a new large rectangular area, which is optimised again. The procedure is repeated until the control-volume is covered, and the complete analytical results are obtained. The effects of some parameters on minimum entropy generation are analysed by numerical examples. The results show that smaller entropy generation can be obtained when the optimization for a given volume is carried out on the basis of triangular elements than those obtained on the basis of rectangular elements.constructal theory, porous medium, solid-gas reactor, heat and mass transfer, entropy generation minimization

show abstract

Section: "Volume-point" Heat and Mass Transfer Model Of A Solid-gas Rmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Based on refs. [15,16], this paper will carry out the constructal optimization for a solid-gas reactor by using triangular elements [22] with entropy generation minimization objective.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Constructal optimization for a solid-gas reactor based on triangular element

Zhou

Chen

Sun

2008

Sci. China Ser. E-Technol. Sci.

View full text Add to dashboard Cite

show abstract

Multiobjective Configurations

Bejan

Lorente

2008

Design With Constructal Theory

View full text Add to dashboard Cite

Optimal design of thermochemical reactors based on constructal approach

2007

Self Cite

View full text Add to dashboard Cite

This work aims to optimize the design of thermochemical reactors such as solid/gas fixed bed reactors working in dynamic mode. The optimization is based on the constructal approach. A thermodynamic criterion, the ratio of reactor output power to its entropy generation, has to be used to take into account the coupled phenomena and the end purpose of such reactors. Two reactors are considered with same overall volume, but different internal configuration of collectors (constructal scales): a “basic” single‐scale configuration (basic reactor), and a “constructal” two‐scale configuration (constructal 1 reactor). Reaction rates notably vary with reactor shape, and an optimal shape factor is found for each reactor, depending on the reactant material density. For both reactors, an important remark is pointed out: the correspondence between the maximum of power/entropy ratio (PER) and the highest reaction rate. Comparison between the optimal basic and constructal 1 reactors shows that the latter presents higher energy efficiency (based on second law analysis), but lower output power than the first. © 2007 American Institute of Chemical Engineers AIChE J, 2007

show abstract

Constructal design combined with entropy generation minimization for solid–gas reactors

Cited by 52 publications

References 7 publications

Constructal optimization for a solid-gas reactor based on triangular element

Constructal optimization for a solid-gas reactor based on triangular element

Multiobjective Configurations

Optimal design of thermochemical reactors based on constructal approach

Contact Info

Product

Resources

About