Library Subscription: Guest
Begell Digital Portal Begell Digital Library eBooks Journals References & Proceedings Research Collections
Journal of Enhanced Heat Transfer
IF: 0.562 5-Year IF: 0.605 SJR: 0.211 SNIP: 0.361 CiteScore™: 0.33

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

Journal of Enhanced Heat Transfer

DOI: 10.1615/JEnhHeatTransf.2013006950
pages 73-81

SYMMETRICAL POROUS SURFACES FOR BOILING ENHANCEMENT IN MINI-CHANNELS: EFFECTS ON LIQUID PRESSURE DROP

G. Carbajal
Universidad del Turabo, Gurabo, P. R. 00778-3030 Puerto Rico
Choondal B. Sobhan
National Institute of Technology Calicut 673601, India
G. P. Peterson
Rensselaer Polytechnic Institute, Troy, USA; Depatment of Mechanical Engineering Texas A&M University, College Station, TX 77843-3123, USA; School of Mechanical Engineering, Georgia Institute of Technology, Atlanta 30332, USA

ABSTRACT

A numerical investigation was conducted to better understand the fluid flow in mini-channels with a porous surface structure in order to enhance the single-phase forced-convection characteristics and performance. The investigation attempted to quantify the influence of the surface structure geometry on the liquid pressure drop along the mini-channels. Various porous structures with flat, triangular, hemispherical, and drop-shaped geometries were utilized in the analysis. The presence of these structures was found to alter the pressure distribution along the mini-channel, while improving the heat transfer rates and increasing the average fluid temperature due to the enhancement in the effective heat transfer area and the mixing process in the flow. The results indicate that the fluid flow is considerably altered due to the presence of protuberances. Considering the heat transfer enhancement and the associated pressure drop, the hemispherical design was found to be the most attractive modification among the various cases analyzed.


Articles with similar content:

HEAT TRANSFER ENHANCEMENT OF INTERNAL PASSAGE USING DIMPLE/PROTRUSION
International Heat Transfer Conference 13, Vol.0, 2006, issue
S. D. Hwang, Hyung-Hee Cho

Heat Transfer Enhancement in Heat Exchanger with Dimpled/ Protruded Surface
International Heat Transfer Conference 15, Vol.23, 2014, issue
Guan Heng Yeoh, Ann Lee, Tsz Kit Tang

A REVIEW OF THE ROLE OF PASSIVE TECHNIQUES ON HEAT TRANSFER ENHANCEMENT OF HORIZONTAL TUBE FALLING FILM AND FLOODED EVAPORATORS
Journal of Enhanced Heat Transfer, Vol.25, 2018, issue 3
M. V. Ramana Murthy, Dilli Balaji, Ramalingam Velraj

Vortex Heat Transfer Enhancement in Dimpled Channels
International Heat Transfer Conference 15, Vol.23, 2014, issue
Egon Hassel, Yaroslav Chudnovsky, Nikolai Kornev, Sergey A. Isaev, Alexander Leontiev

HEAT TRANSFER ENHANCEMENT IN BOILING OVER MODIFIED SURFACES: A CRITICAL REVIEW
Interfacial Phenomena and Heat Transfer, Vol.3, 2015, issue 4
John S. Lioumbas, Thodoris D. Karapantsios, Maria C. Vlachou