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Fundamentals of Entransy and Entransy Dissipation Theory
2014The entransy is a new developed parameter that is effective in optimization of heat transfer. It can be used as an evaluation of the transport ability of heat. In this chapter, based on the energy conservation equation, the entransy balance equations for heat conduction and convective heat transfer are developed.
Junjie Gu, Zhongxue Gan
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Application of Entransy Theory in Thermal Storage System
2014There are many possible capsule and tank geometry types and arrangements. It is very helpful to assess the performance of capsule arrangements, shapes, and flow field configurations. For this purpose, a general tool will be needed to assess the heat transfer which takes place between the capsules and the HTF and evaluate how efficient the process is ...
Junjie Gu, Zhongxue Gan
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Application of Entransy Theory in Absorption Refrigeration System
2014In this chapter, energy and entransy analyses are applied to a single stage absorption refrigeration system, the entransy dissipation rate and entransy-dissipation based thermal resistance rate of each component, as well as the system performance on a series of operating conditions, are calculated.
Junjie Gu, Zhongxue Gan
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The Application of Entransy Dissipation Theory in Optimization Design of Heat Exchanger
2010 14th International Heat Transfer Conference, Volume 4, 2010The heat conduction and fluid friction are two main detrimental irreversibilities in heat exchanger. According to the entransy dissipation theory, the entransy dissipation can be employed to quantify these two irreversibilities. In the present work, the optimization of heat exchanger design is investigated by applying the entransy dissipation theory ...
Jiangfeng Guo +3 more
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An integrated optimization for organic Rankine cycle based on entransy theory and thermodynamics
Energy, 2014Abstract The organic Rankine cycle has been one of the essential heat-work conversion technologies nowadays. Lots of effectual optimization methods are focused on the promotion of the system efficiency, which are mainly relied on engineering experience and numerical simulations rather than theoretical analysis.
Tailu Li, Wencheng Fu, Jialing Zhu
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Generalized constructal optimization of strip laminar cooling process based on entransy theory
Science China Technological Sciences, 2016A strip laminar cooling process is investigated in this paper. Entransy theory and generalized constructal optimization are introduced into the optimization. Total water flow amount (WFA) in the laminar cooling zone (LCZ) and complex function are taken as the constraint and optimization objective, respectively. The entransy dissipation (ED) and maximum
HuiJun Feng +4 more
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The Application of Entransy Dissipation Theory in the Volume-to-Point Heat Conduction Problem
2010 14th International Heat Transfer Conference, Volume 3, 2010Recent advances in semiconductor technologies are accompanied by an accelerated increase in power density level from high performance chips such as microprocessors. The thermal management of electronic devices, especially meeting the limitations on maximum operating temperature and ensuring temperature uniformity across the chip, becomes one of the ...
Liang Ge, Mingtian Xu, Lin Cheng
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Science China Technological Sciences, 2016
A model of non-uniform height rectangular fin, in which the variation of base’s thickness and width are taken into account, is established in this paper. The dimensionless maximum thermal resistance (DMTR) and the dimensionless equivalent thermal resistance (DETR) defined based on the entransy dissipation rate (EDR) are taken as performance evaluation ...
AiBo Yang +4 more
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A model of non-uniform height rectangular fin, in which the variation of base’s thickness and width are taken into account, is established in this paper. The dimensionless maximum thermal resistance (DMTR) and the dimensionless equivalent thermal resistance (DETR) defined based on the entransy dissipation rate (EDR) are taken as performance evaluation ...
AiBo Yang +4 more
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ASME 2012 6th International Conference on Energy Sustainability, Parts A and B, 2012
In order to reduce the consumption of energy and material, the optimization design of the refrigeration systems, especially the minimization for the total area of the heat exchangers, has been an attractive but tough issue in both research and engineering fields.
Qun Chen, Yun-Chao Xu
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In order to reduce the consumption of energy and material, the optimization design of the refrigeration systems, especially the minimization for the total area of the heat exchangers, has been an attractive but tough issue in both research and engineering fields.
Qun Chen, Yun-Chao Xu
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International Journal of Heat and Mass Transfer, 2012
Abstract Mass reduction strongly contributes to reduce the cost and promote the performance of spacecrafts. During the design of spacecrafts, mass minimization for the heat exchanger networks (HENs) is a fundamental and attractive issue for which series of global optimization methods based on numerical simulation have been applied. However, among the
Yun-Chao Xu, Qun Chen
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Abstract Mass reduction strongly contributes to reduce the cost and promote the performance of spacecrafts. During the design of spacecrafts, mass minimization for the heat exchanger networks (HENs) is a fundamental and attractive issue for which series of global optimization methods based on numerical simulation have been applied. However, among the
Yun-Chao Xu, Qun Chen
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