Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)
- Volume 11 Issue 6
- /
- Pages.725-732
- /
- 1999
- /
- 1229-6422(pISSN)
- /
- 2465-7611(eISSN)
Experimental study on the hydrophilic performance of pre-coated aluminum foil
알루미늄 호일의 친수코팅 성능 개선에 관한 실험적 연구
Abstract
It is usual to use hydrophilic-coated aluminum foil for evaporator fin of air-conditioners to reduce air flow resistance caused by the water droplets condensed on the fin surface. The major effect of a hydrophilic coating is to reduce the contact angle of the condensate and prevent bridging of the condensate between the adjacent fins. The performance of hydrophilic coating generally tends to be degraded as it is used since the coating material is washed down by the condensate. In the present work, several types of hydrophilic coatings were evaluated in terms of durability of hydrophilicity, corrosion resistance and heat resistance. Results showed that an improved hydrophilic coating of resin type presented superb qualify in terms of durability and corrosion resistance while having almost the same level of qualify in heat resistance compared with the others.
Keywords