Prediction of an effective cooling output of the fin-and-tube heat exchanger under frosting conditions.
Author(s) : LENIC K., TRP A., FRANKOVIC B.
Type of article: Article
Summary
In the paper, an analysis of heat and mass transfer during frost formation on a fin-and-tube heat exchanger has been presented. For calculation of an exchanged heat flux, a transient two-dimensional mathematical model of frost formation has been developed and numerically solved. The mathematical model and numerical procedure have been experimentally validated. For determination of an effectively exchanged heat flux inside the heat exchanger, the influence of the augmented heat transfer resistance and impact of the defrosting process have been taken into account. A detailed calculation of the frost growth rate has been a base for determination of heat transfer resistance of the frost layer. The influence of frost formation on the overall heat transfer coefficient has also been analysed. The effective exchanged heat flux has been calculated for different operating conditions, durations of cooling cycle as well as defrosting heat fluxes. Results have shown that the effectively exchanged heat flux significantly depends on operating conditions, such as air humidity and temperature, as well as the cooling cycle duration. [Reprinted with permission from Elsevier. Copyright, 2009].
Details
- Original title: Prediction of an effective cooling output of the fin-and-tube heat exchanger under frosting conditions.
- Record ID : 2009-1950
- Languages: English
- Source: Applied Thermal Engineering - vol. 29 - n. 11-12
- Publication date: 2009/08
- DOI: http://dx.doi.org/10.1016/j.applthermaleng.2008.12.030
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Transient two-dimensional model of frost format...
- Author(s) : LENIC K., TRP A., FRANKOVIC B.
- Date : 2009/01
- Languages : English
- Source: International Journal of Heat and Mass Transfer - vol. 52 - n. 1-2
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Modelling for predicting frost behaviour of a f...
- Author(s) : SHOKOUHMAND H., ESMAILI E., VESHKINI A., et al.
- Date : 2009/01/25
- Languages : English
- Source: ASHRAE Transactions. Papers presented at the 2009 ASHRAE Winter Conference: Chicago, Illinois, January 2009. Volume 115, part 1.
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- Date : 2007/08/21
- Languages : English
- Source: ICR 2007. Refrigeration Creates the Future. Proceedings of the 22nd IIR International Congress of Refrigeration.
- Formats : PDF
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Frosting quality and analysis on fin efficiency...
- Author(s) : ZANG R. Q., ZHA S. T., LAI J. B., et al.
- Date : 2003/04/22
- Languages : English
- Source: Cryogenics and refrigeration. Proceedings of ICCR 2003.
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Frost behaviour on a fin considering the heat c...
- Author(s) : KIM J. S., LEE K. S., YOOK S. J.
- Date : 2009/05
- Languages : English
- Source: International Journal of Heat and Mass Transfer - vol. 52 - n. 11-12
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