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[25864] Artykuł:

Pool boiling of water, ethanol and FC-72 on surfaces with narrow tunnels

Czasopismo: Int. Conf. Experimental Fluid Mechanics 2008   Strony: 138-145
ISSN:  9788-0737
ISBN:  978-80-7372-417-7
Wydawca:  TECH UNIV LIBEREC, FAC MECHANICAL ENG, STUDENTSKA 2, LIBEREC 1, 461 17, CZECH REPUBLIC
Opublikowano: 2008
 
  Autorzy / Redaktorzy / Twórcy
Imię i nazwisko Wydział Katedra Procent
udziału		 Liczba
punktów
Robert Pastuszko orcid logoWMiBMKatedra Mechaniki**100.00  

Grupa MNiSW:  Materiały z konferencji międzynarodowej (zarejestrowane w Web of Science)
Punkty MNiSW: 0
Klasyfikacja Web of Science: Proceedings Paper

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Abstract:

Complex experimental investigations of boiling heat transfer on structured surfaces in the form of parallel narrow tunnels were taken up. Experimental data were discussed for two kinds of enhanced surfaces: open narrow tunnels and narrow tunnels limited by perforated foil. The experiments were carried out with water. ethanol and FC-72 at atmospheric pressure. The 0.05 mm thick perforated copper foil (hole diameters: 0.3, 0.4. 0.5 mm) was sintered with the fin tips. The range of tunnel width was from 0.6 mm to 1.2 mm and tunnel depth of 10 mm was used. The effects of hole (pore) diameters and tunnel width on nucleate pool boiling were examined. Substantial enhancement of heat transfer coefficient was observed. The best results at boiling water and ethanol were obtained for 1.0 mm wide tunnels with foil hole diameters of 0.5 mm. For FC-72 the best surfaces were those with open tunnels (width 1.0 mm).


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