01636naa a22002651i 4500 5045 KOSZ 005 20180423105217.0 140411s2011 pl f |000 0 eng d BPK KOSZ 005/ac eng POL 621.5 KUCZYŃSKI, Waldemar. 1999 - . Politechnika Koszalińska - Wydział Mechaniczny, Katedra Techniki Cieplnej i Chłodnictwa Experimental investigations into the impact of the void fraction on the condensation characteristics of R134a refrigerant in minichannels under conditions of periodic instability / Waldemar Kuczyński, Henryk Charun. Dane z autopsji. 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 form ofthis relationship depends on the internal diameter of the minichannels and on the method of calculating the void fraction. Condensation. Periodic instabilities. Void fraction. Minichannels. CHARUN, Henryk. 1996 - . Politechnika Koszalińska - Wydział Mechaniczny, Katedra Techniki Cieplnej i Chłodnictwa W : Archives of Thermodynamics. - 2011,Vol. 32, nr 2, s. 21-37 ART UKD 5045 5045 0 0 0 0 BPK BPK 0992 ART