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A novel method based on entransy theory for setting energy targets of heat exchanger network
Chinese Journal of Chemical Engineering, 2017Abstract A T-Q diagram based on entransy theory is applied to graphically and quantitatively describe the irreversibility of the heat transfer processes. The hot and cold composite curves can be obtained in the T-Q diagram. The entransy recovery and entransy dissipation that are affected by temperature differences can be obtained through the shaded ...
Shuguang Xiang
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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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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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Application of entransy theory on structure optimization of serrated fin in plate-fin heat exchanger
Applied Thermal Engineering, 2020Abstract The effects of geometrical parameters of serrated fin in plate-fin heat exchanger (PFHE) on entransy-dissipation-based thermal resistance (EDTR) caused by heat transfer (Rht) and fluid friction (Rff) are investigated by design of experiment(DOE) and response surface methodology (RSM) in this paper.
Ke Li +5 more
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Generalized thermal resistance and its application to thermal radiation based on entransy theory
International Journal of Heat and Mass Transfer, 2013Abstract Entransy is a novel concept developed in recent years to measure the transport ability of heat in heat transfer processes. In order to analyze and optimize thermal radiation process more conveniently and intuitively, we develop the entransy-theory-based method to the field of thermal radiation problems to define the generalized thermal ...
Jing Wu, Xuetao Cheng
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Energy, 2012
Abstract In the present work, a multi-parameter optimization approach of Isopropanol–Acetone–Hydrogen (IAH) chemical heat pump is developed based on the entransy theory. In the optimization process, the total low-temperature heat consumed by the heat pump system generally decreases while the high-temperature heat recovered by the heat pump increases ...
Jiangfeng Guo, Xiulan Huai
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Abstract In the present work, a multi-parameter optimization approach of Isopropanol–Acetone–Hydrogen (IAH) chemical heat pump is developed based on the entransy theory. In the optimization process, the total low-temperature heat consumed by the heat pump system generally decreases while the high-temperature heat recovered by the heat pump increases ...
Jiangfeng Guo, Xiulan Huai
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Applied Energy, 2014
A thermodynamic cycle usually consists of heat transfer processes in heat exchangers and heat-work conversion processes in compressors, expanders and/or turbines. This paper presents a new optimization method for effective improvement of thermodynamic cycle performance with the combination of entransy theory and thermodynamics.
Qun Chen, Yun-Chao Xu, Jun-Hong Hao
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A thermodynamic cycle usually consists of heat transfer processes in heat exchangers and heat-work conversion processes in compressors, expanders and/or turbines. This paper presents a new optimization method for effective improvement of thermodynamic cycle performance with the combination of entransy theory and thermodynamics.
Qun Chen, Yun-Chao Xu, Jun-Hong Hao
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Constructal optimization for H-shaped multi-scale heat exchanger based on entransy theory
Science China Technological Sciences, 2012Analogizing with the definition of thermal efficiency of a heat exchanger, the entransy dissipation efficiency of a heat exchanger is defined as the ratio of dimensionless entransy dissipation rate to dimensionless pumping power of the heat exchanger.
Lingen Chen, Feng Huijun, Fengrui Sun
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Energy, 2012
Based on the entransy dissipation theory, the multi-parameter optimization design of recuperator is conducted in an Isopropanol-Acetone-Hydrogen (IAN) chemical heat pump system. The performance of the heat pump system can be improved significantly through the multi-parameter optimization, when the main operation parameters of chemical heat pump remain ...
Jiangfeng Guo, Xiulan Huai
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Based on the entransy dissipation theory, the multi-parameter optimization design of recuperator is conducted in an Isopropanol-Acetone-Hydrogen (IAN) chemical heat pump system. The performance of the heat pump system can be improved significantly through the multi-parameter optimization, when the main operation parameters of chemical heat pump remain ...
Jiangfeng Guo, Xiulan Huai
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