테플론 코팅과 오일 담지를 이용한 알루미늄 양극산화피막의 응축 열전달 향상
Enhancement of Condensation Heat Transfer of Anodized Aluminum by Teflon Coating and Oil-Impregnation
0
조회
0
다운로드
2
인용
0
참고문헌
키워드
초록
Surface modification technique enabling the control of condensation provides various benefit in various engineering systems, such as heat transfer, desalination, power plants, and so on. In this study, lubricant oil-impregnation into Teflon-coated nanoporous anodic oxide layer of aluminum to enhance a de-wetting and mobility of water droplet on surface. Due to the surface treatment improving water-repellency, the condensation mode is changed to dropwise, thus the frequency of sliding condensed water droplet on surface is increased. For these reasons, the surface of oil-impregnated Teflon-coated nanoporous anodic aluminum oxide shows significantly enhanced condensation heat transfer compared to bare aluminum surface. In addition, the porosity of anodic aluminum oxide affected the mobility of water droplet even with oil-impregnation and Teflon-coating, indicating that the optimization of porous structure of anodic oxide is required for maximizing the condensation heat transfer.
Abstract
Surface modification technique enabling the control of condensation provides various benefit in various engineering systems, such as heat transfer, desalination, power plants, and so on. In this study, lubricant oil-impregnation into Teflon-coated nanoporous anodic oxide layer of aluminum to enhance a de-wetting and mobility of water droplet on surface. Due to the surface treatment improving water-repellency, the condensation mode is changed to dropwise, thus the frequency of sliding condensed water droplet on surface is increased. For these reasons, the surface of oil-impregnated Teflon-coated nanoporous anodic aluminum oxide shows significantly enhanced condensation heat transfer compared to bare aluminum surface. In addition, the porosity of anodic aluminum oxide affected the mobility of water droplet even with oil-impregnation and Teflon-coating, indicating that the optimization of porous structure of anodic oxide is required for maximizing the condensation heat transfer.
참고문헌 (21)
- X. -H. Ma, , International Journal of Heat and Mass Transfer, 51, pp.1728~1737 (2008)
- K. -C. Park, , Nature, 531, pp.78~82 (2016)
- Q. Baojin, , Experimental Thermal and Fluid Science, 35, pp.211~218 (2011)
- R. Enright, , Nanoscale and Microscale Thermophysical Engineering, 18, pp.223~250 (2014)
- K. Rykaczewski, , Scientific Reports, 4, pp.4158~ (2014)
- Q. Yi, , Applied Thermal Engineering, 106, pp.13~21 (2016)
- R. Wen, , Nano Energy, 33, pp.177~183 (2017)
- Y. Hou, , ACS Nano, 9, pp.71~81 (2015)
- 이정훈, "초발수성 및 발수성 알루미늄 양극산화피막의 최신 연구 동향", 한국표면공학회지, 51(1), pp.11~20 (2018), 한국표면공학회[DOI]
- J. Lee, , Journal of Colloid and Interface Science, 553, pp.734~745 (2019)
- J. Lee, , Advanced Functional Materials, 27, pp.1606040~ (2017)
- 정해창, "윤활유가 침지된 나노구조 전기아연도금층의 젖음성", 한국표면공학회지, 52(1), pp.37~42 (2019), 한국표면공학회[DOI]
- C. Jeong, , Langmuir, 31, pp.11040~11050 (2015)
- L. Zaraska, , Journal of Solid State Electrochemistry, 15, pp.2427~2436 (2011)
- J. D. Smith, , Soft Matter, 9, pp.1772~1780 (2013)
- T. -S. Wong, , Nature, 477, pp.443~447 (2011)
- J. Lee, , Materials Chemistry and Physics, 141, pp.680~685 (2013)
- J. Lee, , Nano Energy, 31, pp.504~513 (2017)
- H. Tsuchiya, , Langmuir, 33, pp.8950~8960 (2017)
- B. Peng, , International Journal of Heat and Mass Transfer, 83, pp.27~38 (2015)
- P. B. Weisensee, , International Journal of Heat and Mass Transfer, 109, pp.187~199 (2017)