碩士 / 正修科技大學 / 機電工程研究所 / 96 / The present research designed and presented the experimental information on two-phase flow distribution of refrigerant R-134a in 11 round-horizontal manifolds of compact heat exchanger using the Venturi-type tube connected with the smooth tube, internally-spirally micro-finned tube within three different inserts (twined coil, twisted tape and wire coil) and without insert. The tests were run at the saturation temperature of 25℃, mass flux of 200-700 kg/m2s and 5 different test tubes. It was found that the Venturi tube connected with the internally-spirally micro-finned tube within the twined coil insert got the best two-phase flow distribution, followed by the twisted tape insert, the wire coil insert, without insert, and smooth tube, respectively.
| Identifer | oai:union.ndltd.org:TW/096CSU00657014 |
| Date | January 2008 |
| Creators | Chen, Hong-Wun, 陳鴻文 |
| Contributors | 溫茂育 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 82 |
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