碩士 / 國立中央大學 / 能源工程研究所 / 107 / Graphene has the features of high chemical stability and high
durability, so graphene can be coated on heat transfer surface to form
hydrophobic surface. However, for liquid with low surface tension,
graphene coating can’t form drop condensation to improve heat transfer
performance. But in fact, graphene coating still can reach the contact
angle increasing and surface energy reducing effect. This study adopts
Chemical Vapor Deposition (CVD) to make graphene and fluorinated
graphene be coated on pure copper integral fin tube surface to improve
condensation heat transfer performance and also put the test integral fin
tube in the visible condensation experiment system that is designed by
this laboratory to compare differences between general integral fin tube
surface, graphene surface and fluorinated graphene surface through
measuring the outside condensation heat transfer coefficient of the
working fluid R-245fa and observing the status of condensate between
fins. It’s expected that the drainage area on fin flank has less condensate
by increasing the contact angle so that heat transfer area can be increased
to improve heat transfer performance.
| Identifer | oai:union.ndltd.org:TW/107NCU05399008 |
| Date | January 2019 |
| Creators | Pan, Hsuan-Yi, 潘軒毅 |
| Contributors | 楊建裕 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 113 |
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