N2 - Technology advancements entail a necessity to remove huge amounts of heat produced by today’s electronic devices based on highly integrated circuits, major generators of heat. Heat transfer to boiling liquid flowing through narrow minichannels is a modern solution to the problem of heat transfer enhancement. The study was conducted for FC-72 boiling in a rectangular, vertical and asymmetrically heated minichannel that had depths of 0.5-1.5 mm, a width of 20 mm and a length of 360 mm. The heat flux increased and decreased within the range of 58.3-132.0 kWm−2, the absolute pressure ranged from 0.116 to 0.184 MPa and the mass flux was 185-1139.2 kgm−2s−1. The boiling process took place on a flat vertical heating surface made of Haynes-230 0.1 mm thick acid-proof rolled plate with the surface roughness of 121 μm. L1 - http://www.journals.pan.pl/Content/94401/PDF/01_paper.pdf L2 - http://www.journals.pan.pl/Content/94401 PY - 2013 IS - No 2 June EP - 21 DO - 10.2478/aoter-2013-0007 KW - Boiling KW - minichannel KW - Two-phase flow pattern KW - Void fraction A1 - Kaniowski, Robert A1 - Poniewski, Mieczysław 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 - 2013 T1 - Measurements of two-phase flow patterns and local void fraction in vertical rectangular minichannel SP - 3 UR - http://www.journals.pan.pl/dlibra/publication/edition/94401 T2 - Archives of Thermodynamics