Abo Bibliothek: Guest
Digitales Portal Digitale Bibliothek eBooks Zeitschriften Referenzen und Berichte Forschungssammlungen
Journal of Enhanced Heat Transfer
Impact-faktor: 0.562 5-jähriger Impact-Faktor: 0.605 SJR: 0.175 SNIP: 0.361 CiteScore™: 0.33

ISSN Druckformat: 1065-5131
ISSN Online: 1026-5511

Volumes:
Volumen 26, 2019 Volumen 25, 2018 Volumen 24, 2017 Volumen 23, 2016 Volumen 22, 2015 Volumen 21, 2014 Volumen 20, 2013 Volumen 19, 2012 Volumen 18, 2011 Volumen 17, 2010 Volumen 16, 2009 Volumen 15, 2008 Volumen 14, 2007 Volumen 13, 2006 Volumen 12, 2005 Volumen 11, 2004 Volumen 10, 2003 Volumen 9, 2002 Volumen 8, 2001 Volumen 7, 2000 Volumen 6, 1999 Volumen 5, 1998 Volumen 4, 1997 Volumen 3, 1996 Volumen 2, 1995 Volumen 1, 1994

Journal of Enhanced Heat Transfer

DOI: 10.1615/JEnhHeatTransf.v10.i1.80
pages 95-117

Multiplicity Analysis of Pin Fins Under Multiboiling Conditions

Rizos N. Krikkis
Institute of Chemical Engineering and High Temperature Chemical Processes, Patras, Greece
Stratis V. Sotirchos
Professor, Department of Chemical Engineering, University of Rochester, Rochester, New York, USA, and Research Director, Institute of Chemical Engineering and High Temperature Chemical Processes, Patras, Greece
Panagiotis Razelos
College of Staten Island, CUNY, New York, New York, USA

ABSTRAKT

A numerical bifurcation analysis is carried out in order to determine the solution structure of pin fins subject to multiboiling heat transfer mode. The thermal analysis depends on the working fluid because the heat transfer coefficient is temperature dependent and includes the convective, the nucleate, the transition, and the film boiling regimes. The heat transfer process is modeled using one-dimensional heat conduction with or without heat transfer from the fin tip. Five fin profiles are considered: the cylindrical, the trapezoidal, the triangular, the convex parabolic, and the parabolic. The multiplicity structure is obtained in order to determine the different types of bifurcation diagrams, which describe the dependence of a state variable of the system (for instance, fin temperature or heat dissipation) on a design (conduction—convection parameter) or operation parameter (base temperature difference). Specifically, the effects of the base temperature difference, of the conduction-convection parameter, and of the Biot number are analyzed and presented in several diagrams and compared with experimental data available in the literature.


Articles with similar content:

THERMAL EFFICIENCY AND THE OPTIMUM SIZES OF FINNED SURFACES WITH COATING
International Heat Transfer Conference 13, Vol.0, 2006, issue
V. G. Gorobets
LAMINAR HEAT TRANSFER WITH A GENERAL THERMAL BOUNDARY CONDITION RELEVANT TO HEAT EXCHANGER DESIGN
International Heat Transfer Conference 10, Vol.11, 1994, issue
Bernhard Spang, Wilfried Roetzel
CONDUCTION EFFECTS IN RASCHE TILES
International Heat Transfer Conference 4, Vol.3, 1970, issue
Peter J. Heggs
On the Use of Wire-Coil Inserts to Augment Tube Heat Transfer
Journal of Enhanced Heat Transfer, Vol.16, 2009, issue 1
Stephen D. Heister, Neal R. Herring
Approximate Analysis for Laminar Film Condensation of Pure Refrigerant on Vertical Finned Surface
Journal of Enhanced Heat Transfer, Vol.5, 1998, issue 3
T. Matsumoto, Shigeru Koyama, Jian Yu