Application of the modified heat transfer formulas for the C-type Heat Exchanger in Passive Heat Removal System of CAP1400

Zhang, Yuhao; Yuan, Yu; Li, Feng; Zhen-hua, Zhang; Qiu, Zhimin; Tan, Pengcheng; Lu, Daogang

doi:10.1016/j.applthermaleng.2019.113876

Cited by 12 publications

(3 citation statements)

References 32 publications

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“…In fact, the series layout heat exchanger network essentially includes the parallel connection of energy and the series connection of fluid, as can be demonstrated by Equations (11) and (12). The coefficient matrix of a heat transfer network in a series layout comprises two matrices.…”

Section: Series Networkmentioning

confidence: 99%

“…In general, thermal systems are characterized by multicomponents, multicoupled processes, multiparameter types, and multioptimization objectives, and their modeling and optimization are complex. Heat exchangers are widely applied to thermal systems as essential components, including sustainable solar heating systems, 4 building heating systems, 5,6 mobile air conditioning systems, 7 battery management systems, 8 and other heat/cool supply systems 9–11 . Consequently, the modeling and optimization of heat exchangers and the related heat supply systems at the component and system level are highly essential.…”

Section: Introductionmentioning

confidence: 99%

“…Heat exchangers are widely applied to thermal systems as essential components, including sustainable solar heating systems, 4 building heating systems, 5,6 mobile air conditioning systems, 7 battery management systems, 8 and other heat/cool supply systems. [9][10][11] Consequently, the modeling and optimization of heat exchangers and the related heat supply systems at the component and system level are highly essential.…”

Section: Introductionmentioning

confidence: 99%

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Matrixed modeling method and entropy generation minimization analysis of heat supply system based on standard thermal resistance

Liang

Hao

et al. 2022

Energy Science & Engineering

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Complex implicit expressions and many intermediate parameters are not conducive to the application of entropy generation optimization to the performance of thermal and energy systems from component and system perspectives. In this paper, we derived matrix heat transport equations of three primary heat exchanger networks according to the heat current method. Based on the matrix equations, we established the matrixed model of a typical heat supply system and obtained the corresponding matrix equation reflecting the power topology structure of the system. Moreover, we derived and reconstructed a single heat exchanger's entropy generation rate expression based on the standard thermal resistance, which was only related to inlet temperatures, structural parameters, and operating parameters. The total system entropy generation rate was then derived and minimized by the Lagrange multiplier method. The optimization results provided the optimal distribution of the mass flow rate of each fluid. Besides, the influence of the heat transfer rate and outer loop inlet temperature on the optimization results revealed that local equipment parameters and conditions could affect the system's minimum entropy generation. The total entropy generation rate decreases by 17.5% when the outer loop inlet temperature was increased from 274 to 280 K. In conclusion, the matrixed modeling and entropy generation analysis are feasible for thermal system modeling and optimization.

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Section: Series Networkmentioning

confidence: 99%