| Title |
Analysis Study of Performance of CO2 Microchannel Evaporator According to Frost Growth |
| Authors |
신은성(Eunsung Shin) ; 조홍현(Honghyun Cho) |
| DOI |
http://dx.doi.org/10.6110/KJACR.2012.24.10.724 |
| Keywords |
서리 ; 증발기 ; 열전달 ; 루버핀 Frost ; Evaporator ; Heat transfer ; Louver fin |
| Abstract |
The microchannel evaporator with louver fin using carbon dioxide are analyzed according to the frost growth. To predict the performance of microchannel evaporator with the frost growth under low temperature, the simulation condition of previous studies was applied. As a result, the frost thickness increases and its increasing rate is reduced when the operating time increases. Frost thickness increases gradually below the quality of 0.74, and then it decreases rapidly. In addition, the frost growth of present model under same surface temperature is very similar trends with Moallem’s test results. In case of low temperature application, the dimensionless frost thickness increases dramatically and it is about 0.86 after 10 minutes. |