碩士 / 逢甲大學 / 機械工程學系 / 89 / The main objective of this study was to research the thermal contact resistance of a circular finned-tube heat exchanger by sequential regularization method of the inverse heat conduction methods. The inverse heat conduction method is to measure experimentally the transient temperature at certain locations inside the circular fin so as to estimate the unknown thermal contact resistance.To improve the computation efficiency, enhance the accuracy, and reduce the unsteadiness resulted from the estimation, the future information and regularization parameter will be applied in the computation of the sequential regularization method. This method has also great advantages of fast converging, simple, and high accuracy.
From the numerical results obtained, the thermal contact resistance in the circular finned-tube heat exchanger can be estimated accurately and effectively while the error is minor and measuring position is near the surface. We also found that the error of estimated results increased with larger measuring errors and further location. When the numbers of future time are increased, the results become stable. And the numbers of sensor does not play an important role.
| Identifer | oai:union.ndltd.org:TW/089FCU00489028 |
| Date | January 2001 |
| Creators | Wen-Jong Luo, 駱文忠 |
| Contributors | Wen-Jeng Chang, 張文政 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 78 |
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