Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/144375
Title: EXPERIMENTAL INVESTIGATION OF FLOW BOILING HEAT TRANSFER IN NOVEL OBLIQUE-FINNED MICROCHANNELS
Authors: MATTHEW LAW LEE LIONG
Keywords: OBLIQUE FINS, MICROCHANNELS, FLOW BOILING, PRESSURE DROP, INSTABILITIES, HIGH-SPEED VISUALISATION
Issue Date: 20-Jan-2016
Citation: MATTHEW LAW LEE LIONG (2016-01-20). EXPERIMENTAL INVESTIGATION OF FLOW BOILING HEAT TRANSFER IN NOVEL OBLIQUE-FINNED MICROCHANNELS. ScholarBank@NUS Repository.
Abstract: THE OBLIQUE-FINNED MICROCHANNEL HEAT SINK HAS BEEN SHOWN TO BE ABLE TO SIGNIFICANTLY ENHANCE SINGLE-PHASE HEAT TRANSFER COUPLED WITH ONLY A SLIGHT PRESSURE DROP PENALTY. THE STRUCTURE, HOWEVER, HAS YET TO BE TESTED IN TWO-PHASE FLOW, WHICH FORMS THE MOTIVATION BEHIND THIS STUDY. FLOW BOILING EXPERIMENTS ARE CONDUCTED IN OBLIQUE-FINNED MICROCHANNELS USING THE FC-72 DIELECTRIC FLUID WITH MASS FLUX RANGE FROM 175 KG/M&178; S TO 395 KG/M&178; S AND IMPOSED EFFECTIVE HEAT FLUX FROM 6 W/CM&178; TO 120 W/CM&178;. ITS TWO-PHASE HEAT TRANSFER PERFORMANCE, FLOW BOILING REGIME, PRESSURE CHARACTERISTICS AND INSTABILITIES ARE STUDIED AND BENCHMARKED WITH THE STRAIGHT-FINNED MICROCHANNELS WITH THE USE OF HIGH-SPEED VISUALISATIONS TO EXAMINE THE PHYSICAL BOILING PHENOMENON IN THE MICROCHANNELS. THE EFFECTS OF OBLIQUE ANGLES AND SECONDARY CHANNEL WIDTHS ARE ALSO INVESTIGATED AND IT IS FOUND THAT THE OBLIQUE-FINNED CONFIGURATION CAN BE OPTIMISED TO ACHIEVE GREATER HEAT TRANSFER ENHANCEMENTS WITH MANAGE
URI: http://scholarbank.nus.edu.sg/handle/10635/144375
Appears in Collections:Ph.D Theses (Open)

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