@ARTICLE{Kuczyński_Waldemar_Experimental_2011, author={Kuczyński, Waldemar and Charun, Henryk}, number={No 2 August}, journal={Archives of Thermodynamics}, pages={21-37}, howpublished={online}, year={2011}, publisher={The Committee of Thermodynamics and Combustion of the Polish Academy of Sciences and The Institute of Fluid-Flow Machinery Polish Academy of Sciences}, abstract={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.}, type={Artykuły / Articles}, title={Experimental investigations into the impact of the void fraction on the condensation characteristics of R134a refrigerant in minichannels under conditions of periodic instability}, URL={http://www.czasopisma.pan.pl/Content/94214/PDF/02_paper.pdf}, doi={10.2478/v10173-011-0007-3}, keywords={Condensation, Minichannels, Periodic instabilities, Void fraction}, }