IIR document
A semi-empirical model for predicting frost accretion on hydrophilic and hydrophobic surfaces.
Author(s) : HERMES C. J. L., SOMMERS A. D., GERBHART C. W., et al.
Type of article: Article, IJR article
Summary
A first-principles model was used together with experimental data obtained in-house to validate a semi-empirical modeling approach for predicting frost accretion on hydrophilic and hydrophobic substrates. An algebraic expression for the frost thickness as a function of the time, the modified Jakob number, the humidity gradient, and the surface contact angle was devised from frost formation theory. At this stage, the correlation was fitted to 956 experimental data points for natural convection conditions spanning different surface temperatures and supercooling degrees, with the modified Jakob number ranging from 0.79 to 1.30, and contact angles ranging from 45° (hydrophilic) to 160° (hydrophobic). When compared to the experimental data for the frost thickness, the proposed semi-empirical model showed errors within ±15% bounds, and an average predictive error of 11.7%. Since the model carries the contact angle as an independent parameter, a sensitivity analysis of the frost growth rate in relation to it is also reported.
Available documents
Format PDF
Pages: 164-171
Available
Public price
20 €
Member price*
Free
* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).
Details
- Original title: A semi-empirical model for predicting frost accretion on hydrophilic and hydrophobic surfaces.
- Record ID : 30023889
- Languages: English
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 87
- Publication date: 2018/03
- DOI: http://dx.doi.org/10.1016/j.ijrefrig.2017.09.022
Links
See other articles in this issue (14)
See the source
Indexing
-
Themes:
Evaporators, condensers and other heat exchangers;
Heat transfer - Keywords: Frost; Free convection; Correlation; Surface; Modelling; Humidity; Growth
-
Comparison of projection method in frost growth...
- Author(s) : SHIMOMURA N., SEKI M., OHKUBO H.
- Date : 2008
- Languages : Japanese
- Source: Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers - vol. 25 - n. 2
View record
-
A heat transfer correlation for natural draft w...
- Author(s) : MELO C., HERMES C. J. L.
- Date : 2009/05
- Languages : English
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 32 - n. 3
- Formats : PDF
View record
-
A simulation and design tool for wire-and-tube ...
- Author(s) : SCHWENTKER R. A., AUTE V. C., RADERMACHER R.
- Date : 2005/08/30
- Languages : English
- Source: Commercial Refrigeration. Thermophysical Properties and Transfer Processes of Refrigerants. Proceedings of the IIR International Conferences.
- Formats : PDF
View record
-
A proposal of evaluation of frost layer thickness.
- Author(s) : YOTSUMOTO H., ISHIHARA I., TANIO K., et al.
- Date : 2008
- Languages : Japanese
- Source: Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers - vol. 25 - n. 2
View record
-
INFLUENCE OF FROST FORMATION ON THE PERFORMANCE...
- Author(s) : IVANOVA V. S., GATCHILOV T. S.
- Date : 1982/05/26
- Languages : English
- Formats : PDF
View record