Scientific journal NRU ITMO
Series "Refrigeration and Air Conditioning"
Registration certificate ЭЛ № ФС 77 – 55410 от 17.09.2013
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ISSN:2310-1148

December 2014 (published: 23.12.2014)

Number 3(16)

Home > Issue > Research flow regimes of two-phase refrigerant flow in horizontal pipes

UDC 621.56

Research flow regimes of two-phase refrigerant flow in horizontal pipes

Malyshev A.A., Bolshakova A.S., Kisser K.V.

The results of experimental studies of flow regimes of two-phase flow of refrigerant R12, R22, R134a in a horizontal pipe inner diameter of 6 mm and 10 mm, with boiling points t0 = -20 ÷ +20˚C, the rate of circulation ω0 = 0,1 ÷ 0,5 m / s. There is generally poor coordination, which can be explained by the authors using the card mode supplies, not the true parameters, which under certain conditions is physically meaningless. The dependence of the boundaries of the flow regime of steam quality, circulation rate, the boiling point, the diameter of the pipe. A comparison of the experimental data with charts Baker (Charge) Hovli, Varma, Maydheyna, Van der Yagta. Found that only 40-50% of the received experimental data are in good agreement with the above diagrams. Studies in addition to the identification of modes also included the study of the true volume steam content by cutoffs.
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Keywords: two-phase flow, regimes of flow a refrigerant, cards of flow regimes.

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