碩士 / 國立成功大學 / 機械工程學系專班 / 96 / The present study applies the finite-difference method in conjunction with the least-squares scheme and measured temperatures to estimate the average convection heat-transfer coefficient, total heat-transfer rate and fin efficiency on a vertical rectangular fin in an insulated enclosure. The heat-transfer coefficient on this rectangular fin is very non-uniform. In order to predict the average heat-transfer coefficient on a plate fin, the whole plate fin is divided to six and eight sub-regions. The heat-transfer coefficient on those sub-regions is assumed to be constant. The results show that the average heat-transfer coefficient increases with increasing the fin spacing and decreases with increasing the fin height. In addition, the heat-transfer characteristics of the fin divided into six sub-regions can approach values of the fin divide into eight sub-regions. In order to demonstrate the accuracy and reliability of the present inverse scheme, a comparison of the average heat-transfer coefficient between the present predicated results and those obtained from correlation recommended by current textbook is made.
| Identifer | oai:union.ndltd.org:TW/096NCKU5490082 |
| Date | January 2008 |
| Creators | JUI-SHENG HUNG, 洪瑞聲 |
| Contributors | Han-Taw Chen, 陳寒濤 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 75 |
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