N2 - The present paper describes results of experimental investigations of pressure drop during the condensation of R134a, R404a and R407C refrigerants in pipe minichannels with internal diameter 0.31-3.30 mm. The results concern investigations of the mean and local pressure drop in single minichannels. The results of experimental investigations were compared with the calculations according to the correlations proposed by other authors. A pressure drop during the condensation of refrigerants is described in a satisfactory manner with Friedel and Garimella correlations. On the basis of the experimental investigations, the authors proposed their own correlation for calculation of local pressure drop during condensation in single minichannels. L1 - http://www.czasopisma.pan.pl/Content/94306/PDF/04_paper.pdf L2 - http://www.czasopisma.pan.pl/Content/94306 PY - 2012 IS - No 1 August EP - 106 DO - 10.2478/v10173-012-0004-1 KW - Compact condenser KW - Condensation in minichannels KW - Pressure drop during flow in condensation A1 - Bohdal, Tadeusz A1 - Charun, Henryk A1 - Sikora, MaƂgorzata PB - The Committee of Thermodynamics and Combustion of the Polish Academy of Sciences and The Institute of Fluid-Flow Machinery Polish Academy of Sciences DA - 2012 T1 - Pressure drop during condensation of refrigerants in pipe minichannels SP - 87 UR - http://www.czasopisma.pan.pl/dlibra/publication/edition/94306 T2 - Archives of Thermodynamics