碩士 / 國立成功大學 / 機械工程學系 / 89 / The main task of the project is to estimate the heat transfer coefficient on the fin of the plate finned-tube evaporator under frosting condition in forced convection. This project includes numerical and experimental works. The numerical work is to present the relationship between the frost thickness and the heat transfer coefficient.
The numerical method based on the hybrid scheme of the Laplace Transform Method and Finite-Difference Method in conjunction with the least-squares scheme is used to solve the two-dimensional inverse heat conduction problems for evaluating the heat transfer coefficient on the fin. The least-squares technique is applied to modify the predicted values. The effect of measurement errors on the estimation of the heat transfer coefficient will be investigated in the present analysis. A plate finned-tube evaporator is set up in conjunction with the other experimental equipment for measuring the frost thickness, fin temperature and tube temperature. The heat transfer coefficient and heat flux on the fin under frosting condition can be determined by using the present numerical method and the temperature measurements.
| Identifer | oai:union.ndltd.org:TW/089NCKU0489112 |
| Date | January 2001 |
| Creators | Lung-Chang Lin, 林倫慶 |
| Contributors | H.T. 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 | 83 |
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