An experimental study of heat transfer in curved pipe with periodically varying curvature
| Autor: | Chiang Fan Pin, 江芳彬 |
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| Rok vydání: | 1999 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 87 The curvature of a pipe can induce a secondary flow for the flow in the pipe. The effect of the secondary flow enhances the heat transfer rate significantly. Therefore, curved pipe is widely applied in heat transfer devices. However, in the literature, most of studies for the curved pipe flow is dealing with coroidal flow with constant curvature. There are few articles dealing with varying curvature curved pipe flow despite the fact that non-uniform curved pipes have as much practical use as coroidal. The solar collector with periodical s-shaped pipe is a practical example for varying curvature curved pipe flow and heat transfer. In this article, experiments were conducted in a double-pipe heat exchanger with water as the working medium. The heat transfer coefficients were obtained using the Wilson plot method. The effect of the Dean, Prandtl, Reynolds number and curvature ratio on the flow resistance, average heat transfer rate and friction factor are presented. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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