Modelling of two-phase closed thermosyphon based on SINDA/FLUINT

Ma, Limin; Yin, Xiaoying; Shang, Linlin; Ji, Zhongli

doi:10.1016/j.applthermaleng.2017.10.156

Cited by 10 publications

(3 citation statements)

References 14 publications

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“…The reason this phenomenon occurs is that, with the increase in input power, the evaporation rate of the working fluid in the evaporation section of the two-phase closed thermosyphon increases, and the working fluid cannot be added back in time, thereby decreasing the heat transfer performance. The equivalent thermal conductivity of the two-phase closed thermosyphons with total lengths of 320 mm and 500 mm increases with increasing heat transfer rate, which is consistent with the results reported in references [8] and [26]. The equivalent thermal conductivity of the former increased from 1296.69 W•m -1 •K -1 to 1375.84 W•m -1 •K -1 (a 6.10 increase), whereas that of the latter increased from 1539.88 W•m -1 •K -1 to 1694.19 W•m -1 •K -1 (a 10.02 increase).…”

Section: Resultssupporting

confidence: 91%

“…Wang et al [7] used the modified Lee model based on the volume of fluid (VOF) method and the original Lee model to model the heat transfer behavior of a thermosyphon during geyser boiling via computational fluid dynamics (CFD). Limin et al [8] established a transient simulation model of a thermosyphon using SINDA/FLUINT 5.6. The evaporation section was heated with a water bath and the heat transfer rate and the total heat transfer coefficient increased with increasing water bath temperature.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation model of the steady-state heat transfer performance of two-phase closed thermosyphons

Zhu

et al. 2022

THERM SCI

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Two-phase closed thermosyphons have good thermal conductivity and are widely used in heat transfer applications. It is essential to establish an effective method for evaluating the steady-state heat transfer performance of two-phase closed thermosyphons, as such a method can help to select appropriate designs and to improve the efficiency of these devices. In this paper, the equivalent thermal conductivity is derived by the principle of equal total thermal resistance, in which the influence of the adiabatic length is eliminated. An evaluation model of the steady-state heat transfer performance of two-phase closed thermosyphons is established. Test results of three two-phase closed thermosyphons with total lengths of 220 mm, 320 mm and 500 mm show that as the heat transfer rate increases, the equivalent thermal conductivity of these devices decreases by 28.91%, increases by 6.10% and increases by 10.02%, respectively, among which the minimum value is 831.63 W?m-1?K-1and the maximum value is 1694.19 W?m-1?K-1. The decrease (increase) in the equivalent thermal conductivity in the evaluation model indicates a decrease (increase) in the heat transfer performance. The results show that the equivalent thermal conductivity of the model can effectively evaluate the heat transfer performance of two-phase closed thermosyphons.

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Section: Resultssupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Evaluation model of the steady-state heat transfer performance of two-phase closed thermosyphons

Zhu

et al. 2022

THERM SCI

View full text Add to dashboard Cite

show abstract

“…A combination of system-level analysis and high level of detail for heat exchangers was implemented through a complex thermal-fluid network construction. In various areas, such as building structures [47], solid desiccant [48], thermosyphon [49], and heat pipes [50], R-C network models have been widely used. In the case of HP, additional problems were found in the application.…”

Section: Scope Of Studymentioning

confidence: 99%