碩士 / 國立成功大學 / 機械工程學系碩博士班 / 92 / The purpose of this thesis is to investigate the effect of the fin spacing on the frosted heat transfer coefficient of the plate fin inside plate finned-tube evaporator with one - tube elliptical tube under force convection. The thesis includes the numerical and experimental parts. The present inverse scheme in conjunction with the fin temperature measurements at various measurement locations is applied to predict the frosted heat transfer coefficient on the plate fin.
The hybrid numerical method involving the Laplace transform technique and the finite-difference method is applied to solve the 2-D inverse heat conduction problem in order to predict the frosted heat transfer coefficient on the fin. The least-squares scheme is applied to minimize the sum of the squares of the deviations between the calculated and measured temperatures in order to correct the estimated values. In general, slight inaccuracies of the interior measured temperatures can affect the accuracy of the estimated results for most of the previous inverse schemes. Thus the effect of the measurement error on the estimation of the frosted heat transfer coefficient will be investigated in the present analysis. A plate finned-tube evaporator is set up in conjunction with its relative experimental equipments for measuring the fin temperature. The frosted heat transfer coefficient can be predicted by using the present inverse scheme in conjunction with the fin temperature measurements. The results show that the temperature with the wind is higher than that on the lee side and the heat transfer coefficient has the same trend.
| Identifer | oai:union.ndltd.org:TW/092NCKU5490155 |
| Date | January 2004 |
| Creators | Yi-Tong Wang, 王益彤 |
| 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 | 96 |
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