碩士 / 國立雲林科技大學 / 機械工程系碩士班 / 99 / The purpose of this research is explore the effect of cannelure configuration on compact heat exchanger in the forced convection flow. In the previous investigations, when the fin pitch of heat sink was 1mm, the dimple vortex generator fins to increase the cannelure configuration was quite effective to performance of heat transfer and pressure drop. Therefore, the objective of this thesis is to optimize the number of cannelure configuration s and their positions on the fin for better performance. A total of six heat sinks were made and tested, including plain fin, horizontal cannelure fin, oblique cannelure fin, and three different vertical cannelure fin. The experiments were performed in a channel flow experimental rig which consisted of a closed rectangular channel with a removable test section, and the performance of fins is measured by the pressure differential instrumentation and thermal couples. Also, an infrared rays camera is used to take temperature distribution images on fins for analyzing the heat transfer performance for each fin. Also, FloEFD software is used for simulating the temperature distribution on fins for comparing the experimental results.
The results indicated that the vertical cannelure fin type I is not only has the better effective heat transfer than the plate fin but also reduced approximately 12.9% pressure drops. Using the VG-1 and FG-3 principles for thermal evaluation, as speed about 1m/s~5m/s, the vertical cannelure fin type I can reduce 16 % heat transfer area and reduces 35.8% power as compared to the plate fin.
| Identifer | oai:union.ndltd.org:TW/099YUNT5489061 |
| Date | January 2011 |
| Creators | Yueh-Chun Wu, 吳岳峻 |
| Contributors | Ing-Youn Chen, 陳英洋 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 73 |
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