Suscripción a Biblioteca: Guest
Portal Digitalde Biblioteca Digital eLibros Revistas Referencias y Libros de Ponencias Colecciones
Heat Transfer Research
Factor de Impacto: 0.404 Factor de Impacto de 5 años: 0.8 SJR: 0.264 SNIP: 0.504 CiteScore™: 0.88

ISSN Imprimir: 1064-2285
ISSN En Línea: 2162-6561

Volumes:
Volumen 50, 2019 Volumen 49, 2018 Volumen 48, 2017 Volumen 47, 2016 Volumen 46, 2015 Volumen 45, 2014 Volumen 44, 2013 Volumen 43, 2012 Volumen 42, 2011 Volumen 41, 2010 Volumen 40, 2009 Volumen 39, 2008 Volumen 38, 2007 Volumen 37, 2006 Volumen 36, 2005 Volumen 35, 2004 Volumen 34, 2003 Volumen 33, 2002 Volumen 32, 2001 Volumen 31, 2000 Volumen 30, 1999 Volumen 29, 1998 Volumen 28, 1997

Heat Transfer Research

DOI: 10.1615/HeatTransRes.2018021728
pages 965-977

EXPERIMENTAL INVESTIGATION OF MIXED CONVECTION AND SURFACE RADIATION HEAT TRANSFER FROM PROTRUDING DISCRETE HEAT SOURCES MOUNTED ON A VERTICAL CHANNEL

Tapano Kumar Hotta
School of Mechanical Engineering, VIT University, Vellore 632014, India
Perni Sri Harsha
Department of Mechanical Engineering, IIT Madras, Chennai 600036, India
S. P. Venkateshan
Department of Mechanical Engineering, IIT Madras, Chennai 600036, India

SINOPSIS

Three-dimensional steady-state mixed convection heat transfer experiments are conducted on five protruding discrete heat sources (aluminum) of different sizes arranged at various positions on a substrate board (bakelite), mounted on a vertical channel. The objective is to study the mixed convection and surface radiation heat transfer characteristics of these heat sources. It is seen that the temperature excess of the heat sources is largely influenced by their size, positioning on the substrate board, power generation rate, and channel aspect ratio. The aspect ratio studies are carried out to investigate the effect of the channel size on the cooling of discrete heat sources. It is seen that increasing the channel aspect ratio has a negligible effect on the heat transfer characteristic of heat sources, and a suitable aspect ratio has to be maintained to obtain the optimal temperature of heat sources. Experiments are carried out for both polished and black painted heat sources to study the contribution of surface radiation. The results suggest that radiation is significant as the heat transfer is enhanced by 10% from polished to black painted surfaces. Again, the larger heat source will have less heat dissipation rate per unit area and must be placed on the substrate bottom.


Articles with similar content:

EFFECTS OF SUBSTRATE CONDUCTIVITY ON CONVECTIVE COOLING OF ELECTRONIC COMPONENTS
Transport Phenomena in Thermal Engineering. Volume 2, Vol.0, 1993, issue
C. Y. Choi, S. J. Kim, A. Ortega
HEAT TRANSFER IN A CHANNEL WITH INTERMITTENT HEATED ALUMINUM-FOAM HEAT SINKS
Heat Transfer Research, Vol.48, 2017, issue 3
Ayla Dogan, Bahadir Oney
NUMERICAL MODELING OF BUOYANCY-DRIVEN AIR FLOW INSIDE IRREGULAR TENT AIR GAP
First Thermal and Fluids Engineering Summer Conference, Vol.7, 2015, issue
Ethan Languri, Vinit V. Prabhu
Natural Convection Enhancement on Micro-Grooved Surfaces
Journal of Enhanced Heat Transfer, Vol.1, 1994, issue 3
John C. P. Huang, Ting Wang, Scott P. Mislevy
NUMERICAL STUDY ON COMBINED EFFECT OF SOLAR CHIMNEY AND EARTH COOLING FOR BUILDING VENTILATION
3rd Thermal and Fluids Engineering Conference (TFEC), Vol.30, 2018, issue
Xianchang Li, Md Sajjadul Alam