Naslov
Mathematical modelling of frost layer growth in a fin-and-tube heat exchanger

Autori
Lenić, Kristian ; Trp, Anica ; Franković Bernard

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of the Heat-SET 2007 conference: Heat transfer in components and systems for sustainable energy technologies, Vol. I / Thonon, Bernard - Grenoble : Editors-GRETh, 2007, 447-454

ISBN
2-9502555-2-3

Skup
Heat-SET 2007 conference: Heat transfer in components and systems for sustainable energy technolgies

Mjesto i datum
Chambéry, Francuska, 18.04.2007. - 20.04.2007

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
frost layer; heat exchanger; mathematical modelling

Sažetak
In the paper a numerical analysis of heat and mass transfer during frost formation on a fin-and-tube heat exchanger has been performed. Frost layer formation significantly influences the heat transfer on heat exchanger fins. The numerical analysis of the frost growth enables predictions of the heat transfer resistance and the decrease of exchanged heat flux. A transient two-dimensional mathematical model of frost formation has been developed. The applied mathematical model has been defined using governing equations for the boundary layer that include air and frost sub-domains as well as a boundary condition on the air-frost interface. The mathematical model with initial and boundary conditions has been discretised according to the finite volume method and solved numerically using SIMPLER algorithm for the velocity-pressure coupling. As result of numerical calculations, time-wise frost thickness variations for different air humidities have been presented.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo, Temeljne tehničke znanosti

POVEZANOST RADA