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[43404] Artykuł: Pool boiling on rectangular fins with tunnel-pore structureCzasopismo: EPJ Web of Conferences Tom: 45ISSN: 2100-014X ISBN: 978-80-7372-912-7 Wydawca: E D P SCIENCES, 17 AVE DU HOGGAR PARC D ACTIVITES COUTABOEUF BP 112, F-91944 CEDEX A, FRANCE Opublikowano: 2013 Seria wydawnicza: EPJ Web of Conferences Autorzy / Redaktorzy / Twórcy
Grupa MNiSW: Materiały z konferencji międzynarodowej (zarejestrowane w Web of Science) Punkty MNiSW: 15 Klasyfikacja Web of Science: Proceedings Paper DOI Web of Science |
Complex experimental investigations were conducted in the area of pool boiling heat transfer on extended surfaces with internal tunnels limited by perforated foil. The experiments were carried out for water and R-123 at atmospheric pressure. The tunnel surfaces were fabricated from 0.05 - 0.1 mm thick perforated copper foil (pore diameters: 0.3, 0.4, 0.5 mm) sintered with mini-fins formed by 5 and 10 mm high rectangular fins and horizontal inter-fin surface. The effect of the main fin height, pore diameters and tunnel pitch on nucleate pool boiling was examined. Substantial enhancement of heat transfer coefficient was observed for the investigated surfaces. The highest increase in the heat transfer coefficient was obtained for the 10 mm high fins - about 50 kW/m(2)K for water and 15 kW/m(2)K for R-123. The investigated surfaces showed boiling heat transfer coefficients similar to those of existing tunnel-pore structures.