Entransy - a Novel Theory in Heat Transfer Analysis and Optimization

Chen, Qun; Liang, Xin-Gang; Guo, Zeng-Yuan

doi:10.5772/20991

Cited by 8 publications

(13 citation statements)

References 34 publications

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“…[2] and [3] as two typical examples, a group of scientists propagate a new quantity that from their perspective was missing so far and complements the theory of energy transfer in the form of heat.…”

Section: Extending the Classical Concept: The Entransy Gmentioning

confidence: 93%

“…The arguments raised by the authors in Refs. [2] and [38] in order to illustrate and justify their entransy definition can be listed as follows, with numbers (Ai) that will be resumed in the subsequent discussion:…”

Section: Extending the Classical Concept: The Entransy Gmentioning

confidence: 99%

“…They claim that an important quantity within this concept is missing, something they call "entransy," see Ref. [2] as an example of many of their publications [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]. Recently, this entransy has been deeply analysed in Refs.…”

Section: Introductionmentioning

confidence: 95%

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Do We Really Need “Entransy”? A Critical Assessment of a New Quantity in Heat Transfer Analysis

Herwig

2014

Journal of Heat Transfer

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Recently, a group of scientists introduced a new quantity for the analysis of heat transfer problems. They called it entransy since according to their understanding it is both, an indication of the nature of energy as well as that of the heat transfer ability. This concept is critically assessed on the background of two questions: Is entransy as an extension of the well established theory of heat transfer consistent with this classical approach? And: Is there a real need for the extension of the classical theory by introducing entransy as a quantity that was missing in the past?

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Section: Extending the Classical Concept: The Entransy Gmentioning

confidence: 93%

Section: Extending the Classical Concept: The Entransy Gmentioning

confidence: 99%

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Do We Really Need “Entransy”? A Critical Assessment of a New Quantity in Heat Transfer Analysis

Herwig

2014

Journal of Heat Transfer

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“…The physical meaning of entransy was further expounded with researches into, for example, physical mechanisms of heat conduction and electro-thermal simulation experiments. Some scholars [52][53][54][55][56][57][58][59] have shown a great interest and have also studied almost all kinds of heat transfer optimization problems based on entransy dissipation. Chen et al [60][61][62], Wei et al [63][64][65][66][67], Xiao et al [68][69][70][71][72] and Xie et al [73][74][75] combined the entransy dissipation extremum principle [50][51][52][53][54][55][56][57][58][59] with constructal theory [35][36][37][38][39][40][41][42][43][44][45][46][47][48]…”

Section: Introductionmentioning

confidence: 99%

T-shaped assembly of fins with constructal entransy dissipation rate minimization

Chen

Xiao

Xie

et al. 2012

International Communications in Heat and Mass Transfer

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“…A series of in-depth researches have been carried out in various directions, such as heat conduction, heat convection and heat exchanger, mass transfer, complex transfer process, phase change and radiative heat transfer. According to a incomplete statistics, more than 100 related literatures had been published until August 2011, including monographs and corpuses [1,8], review articles [9][10][11] and doctoral dissertations [12][13][14][15][16][17][18][19][20][21][22].…”

mentioning

confidence: 99%

Progress in entransy theory and its applications

Chen

2012

Chin. Sci. Bull.

115

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The entransy and entransy dissipation extremum principle proposed have opened up a new direction for the heat transfer optimization. The emergence and development of entransy theory are reviewed. Entransy theory and its applications are summarized from several aspects, such as heat conduction, heat convective, heat radiation, heat exchanger design and mass transfer, etc. The emphases are focused on four aspects, i.e., the comparison between entropy generation rate and entransy dissipation rate, the combination of entransy dissipation extreme principle with finite time thermodynamics, the combination of entransy dissipation extreme principle with the heat conduction constructal theory, and the combination of entransy dissipation extreme principle with the heat convective constructal theory. The scientific features of entransy theory are emphasized. Influenced by oil crisis in the 1970's directly, the heat transfer enhancement was world-widely paid attention by the scientific community, and was quickly developed into one of very important branches in thermal science and technology fields. With the progress of social development ideas, such as sustainable development, low-carbon technology and low-carbon economy, the concept of heat transfer enhancement has developed into a broader scope concept of heat transfer optimization [1]. In the past 30 years, the basic theory of heat transfer optimization has been made considerable progresses, and finite-time thermodynamics, field synergy principle, constructal theory as well as entransy theory are the representative achievements. The emergences of these theories promoted the developments of thermodynamics and heat transfer. Finite-time thermodynamics, which combined thermodynamics, heat transfer and fluid mechanics, provided a theoretical fundament for performance optimizations of practical processes and devices with the constraints of a finite size and finite time. Field synergy principle unified the essential physical understandings of convective heat transfer and heat transfer enhancement phenomena, and provided a theoretical fundament for the development of heat transfer enhancement technology to achieve better energy saving effects. Constructal theory, which was called the thermodynamics of non-equilibrium system with configuration in the field of thermal science, provided a theoretical fundament for the unified descriptions of the generation of flow structures in natural organization and the designs of various flow structures. Fourier's law of heat conduction, Newton's law of cooling and Stephen-Boltzmann law of blackbody radiation only gave the concept of heat transfer rate, while the concepts of entransy and entransy dissipation lay the foundation of defining the concept of heat transfer efficiency which did not appear in the heat transfer theory before. Entransy theory provided a new theoretical fundament for heat transfer optimization, which is different from that of the entropy generation minimization.

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Entransy - a Novel Theory in Heat Transfer Analysis and Optimization

Cited by 8 publications

References 34 publications

Do We Really Need “Entransy”? A Critical Assessment of a New Quantity in Heat Transfer Analysis

Do We Really Need “Entransy”? A Critical Assessment of a New Quantity in Heat Transfer Analysis

T-shaped assembly of fins with constructal entransy dissipation rate minimization

Progress in entransy theory and its applications

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