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[25844] Artykuł:

Pool boiling from extended surfaces with internal tunnels limited by perforated foil

Czasopismo: Proc. Int. Conf. Experimental Fluid Mechanics 2008   Strony: 129-137
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:

Experimental investigations of pool boiling heat transfer on finned arrays with internal tunnels limited by perforated foil were conducted. The experiments were carried out for water, ethanol and fluorinert FC-72 at atmospheric pressure. The tunnel surfaces were fabricated in 0.05 mm thick perforated copper foil (pore diameters: 0.3, 0.4, 0.5 mm) sintered with the mini-fins, formed from the 5 and 10 mm height rectangular fins and horizontal inter-fin surface. The effect of main fin height, pore diameters and tunnel width on nucleated pool boiling was examined. Substantial enhancement of heat transfer coefficient was observed for the investigated surfaces. In water and ethanol boiling the highest increase in the heat transfer coefficient was obtained for the least of the investigated openings and tunnel width, i.e. 0.3 mm and 0.6 mm. For FC-72 the best surfaces were those with pore diameters of 0.5 mm and medium tunnel width (1 mm).