Experimental investigations into the impact of the void fraction on the condensation characteristics of R134a refrigerant in minichannels under conditions of periodic instability

• Autorzy: Kuczyński W. , Charun H.
• Języki publikacji: EN

Abstrakty

EN

This paper present the results of experimental investigations of condensation of R134a refrigerant in pipe minichannels with internal diameters 0.64, 0.90, 1.40, 1.44, 1.92 and 3.30 mm subject to periodic pressure instabilities. It was established that as in conventional channels, the displacement velocity of the pressure instabilities distinctly depends on the frequency of their hydrodynamic generation. The void fraction distinctly influences the velocity of the pressure instabilities. The form of this relationship depends on the internal diameter of the minichannels and on the method of calculating the void fraction.

Słowa kluczowe

EN

condensation; minichannels; Periodic instabilities; void fraction

PL

kondensacja; minikanały; okresowe niestabilności; udział objętościowy

• Wydawca: Wydawnictwo Instytutu Maszyn Przepływowych PAN ; Komitet Termodynamiki i Spalania PAN
• Czasopismo: Archives of Thermodynamics
• Rocznik: 2011
• Tom: Vol. 32, no. 2
• Strony: 21--37
• Opis fizyczny: Bibliogr. 33 poz.,

Twórcy

autor

Kuczyński W.

autor

Charun H.

• Koszalin University of Technology, Division of Heat and Refrigeration Engineering, Racławicka 15-17, 75-620 Koszalin, Poland,

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