Experimental Investigation of Evaporative Condensed Refrigerating System by Variation of Heat Transfer Tube Types

Yin, Yingde; Zhu, Dongsheng; Sun, Jianpeng; Li, Xiuzhen; Aimen, Tu

doi:10.1016/j.proeng.2017.09.950

Cited by 8 publications

(2 citation statements)

References 19 publications

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“…Gong et al [17] modeled the condensation process of mixed steam inside the tube with falling-film evaporation outside the tube by simulating the operating parameters of condensers in power plants. In terms of the influence of tube-type on the performance of CECT, the literature [18][19][20] reports on experimental tests on the influence of special-shaped enhanced heat transfer tubes, such as elliptic, flat, and twisted tubes. Additionally, the results were compared with traditional CECTs.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of a Novel Non-Packing Closed Evaporative Cooling Tower with Vertical 3D Deformation Tubes

Liu

et al. 2022

Energies

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The closed evaporative cooling tower (CECT) is widely used in the field of industrial cooling. At present, most CECTs still mainly adopt the horizontal-tube falling-film cooling method. In this paper, a novel vertical CECT using 3D deformation tubes is developed. To investigate the vertical surface falling-film evaporative cooling effect of this novel cooling equipment, a traditional horizontal CECT was modified to produce a prototype of vertical non-packing CECT. The cooling performance of the novel vertical CECT has been investigated and compared to the previous traditional horizontal CECT by experimental method. The results show that the convective heat transfer coefficient of the water film outside the tube was increased by 5.87~12.95% and the overall cooling performance was increased by 7.31% on average. This indicates that the cooling load can be increased by changing the traditional horizontal-tube falling-film evaporative cooling method to the vertical falling-film evaporative cooling method. Moreover, the heat flux of the novel vertical CECT decreases by about 7% when the wet bulb temperature increases by 1 °C under the test range of wet bulb temperature, which indicates that the ambient wet bulb temperature has an obvious influence on the cooling load. The research results can provide reference for the optimization design of the CECT.

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Section: Introductionmentioning

confidence: 99%

Experimental Study of a Novel Non-Packing Closed Evaporative Cooling Tower with Vertical 3D Deformation Tubes

Liu

et al. 2022

Energies

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“…For example, Y.D. Yin [1,2] and others studied the three-dimensional tube evaporator and condenser in the field of refrigeration, and found that the three-dimensional tube evaporator and condenser have a positive impact on the COP (coefficient of performance) of the refrigeration unit. The results show that the heat transfer performance of the three-dimensional tube is better than that of the smooth tube after Xiuzhen Li et al [3][4][5], who studied the heat transfer performance (coefficient of performance) of the refrigeration unit.…”

Section: Introductionmentioning

confidence: 99%

Study on Comprehensive Performance of Three-Dimensional Tube Applied to Gas–Solid Two-Phase Flow Environment

Liu

et al. 2021

Energies

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The three-dimensional tubular heat exchanger has excellent performance in single-phase flow, but its performance in gas solid two-phase flow is still lacking research. In this paper, analysis and comparison of heat exchanger prototypes made up of four different three-dimensional tubes by different comprehensive performance evaluation methods are carried out through experimental research and theoretical analysis. The research results show that the ratio of the long axis to the short axis of the three-dimensional tube has an important influence on its heat transfer performance and flow resistance. Furthermore, a reasonable ratio can be obtained by comparing its comprehensive performance. Among the comprehensive performance analysis results of four kinds of three-dimensional tubes, the comprehensive performance factor ηo-I of type I is the best which achieves the purpose of heat transfer enhancement. Results from the current research could provide beneficial guidance for further design and application of the three-dimensional tubular heat exchanger.

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Theoretical Analysis of Annular Elliptic Finned Tube Evaporative Condenser Based on Field Measurement

Wang

et al. 2020

J. Therm. Sci.

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Experimental Investigation of Evaporative Condensed Refrigerating System by Variation of Heat Transfer Tube Types

Cited by 8 publications

References 19 publications

Experimental Study of a Novel Non-Packing Closed Evaporative Cooling Tower with Vertical 3D Deformation Tubes

Experimental Study of a Novel Non-Packing Closed Evaporative Cooling Tower with Vertical 3D Deformation Tubes

Study on Comprehensive Performance of Three-Dimensional Tube Applied to Gas–Solid Two-Phase Flow Environment

Theoretical Analysis of Annular Elliptic Finned Tube Evaporative Condenser Based on Field Measurement

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