Critical heat flux at flow boiling of refrigerants in minichannels at high reduced pressure

Belyaev, Aleksandr V.; Varava, A. N.; Дедов, А. В.; Komov, A. T.

doi:10.1016/j.ijheatmasstransfer.2018.02.027

Cited by 12 publications

(2 citation statements)

References 18 publications

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“…Comparison of the data obtained from calculations using Formulas ( 16)-( 19) with the primary experimental data for a low mass flow rate and saturated liquid is shown in Figure 10. A comparison example of the calculation with the experimental data from [7] and [25], corresponding to moderate subcooling and high mass flow rate, is shown in Figure 11. Comparison of the data obtained from calculations using Formulas ( 16)-( 19) with the primary experimental data for a low mass flow rate and saturated liquid is shown in Figure 10.…”

Section: Flow Boiling Heat Transfermentioning

confidence: 99%

Section: Flow Boiling Heat Transfermentioning

confidence: 99%

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Study of Pressure Drops and Heat Transfer of Nonequilibrial Two-Phase Flows

Belyaev

Дедов

Krapivin

et al. 2021

Water

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Currently, there are no universal methods for calculating the heat transfer and pressure drop for a wide range of two-phase flow parameters in mini-channels due to changes in the void fraction and flow regime. Many experimental studies have been carried out, and narrow-range calculation methods have been developed. With increasing pressure, it becomes possible to expand the range of parameters for applying reliable calculation methods as a result of changes in the flow regime. This paper provides an overview of methods for calculating the pressure drops and heat transfer of two-phase flows in small-diameter channels and presents a comparison of calculation methods. For conditions of high reduced pressures pr = p/pcr ≈ 0.4 ÷ 0.6, the results of own experimental studies of pressure drops and flow boiling heat transfer of freons in the region of low and high mass flow rates (G = 200–2000 kg/m2 s) are presented. A description of the experimental stand is given, and a comparison of own experimental data with those obtained using the most reliable calculated relations is carried out.

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Section: Flow Boiling Heat Transfermentioning

confidence: 99%

Section: Flow Boiling Heat Transfermentioning

confidence: 99%