Document IIF
Modélisation analytique et simulation numérique du transfert de chaleur dans un évaporateur à surface.
Analytical modeling and numerical simulation of heat transfer in a skin evaporator.
Auteurs : LORBEK L., POREDOS P., KITANOVSKI A., et al.
Type d'article : Article, Article de la RIF
Résumé
This paper presents a one-dimensional, steady-state, analytical and a two-dimensional, steady-state, numerical approach to describe heat transfer in the complex solid structure of a skin evaporator used in household refrigerators. Both models are based on a specific form of the energy equation (the heat diffusion equation), which is solved to obtain the temperature distributions and heat flows within the different parts of the structure. Heat transfer is limited by a number of thermal resistances, such as the inner plastic wall of the refrigerator, the aluminum plate, the foil, the tube of the evaporator, and the air gaps. The insulation that prevents heat flowing into the evaporator from the surroundings is also taken into consideration. A comparison of the models showed that the root-mean-square deviation of the calculated temperatures ranged from 0.34?K to 0.60?K and that the area-weighted discrepancy of the calculated heat flows was 4.6%. Experimental validation of the model showed that the calculated and measured evaporator capacities were within ±12%. This demonstrates that several simplifications to the analytical model can be made, so drastically reducing the complexity of modeling a skin evaporator's structure, while retaining sufficient accuracy. These simplifications include reducing the heat transfer to one-dimensional heat conduction in the individual parts of the structure, neglecting the heat flux through the aluminum–air-gap contact, and linearizing the aluminum foil.
Documents disponibles
Format PDF
Pages : 195-203
Disponible
Prix public
20 €
Prix membre*
Gratuit
* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)
Détails
- Titre original : Analytical modeling and numerical simulation of heat transfer in a skin evaporator.
- Identifiant de la fiche : 30023521
- Langues : Anglais
- Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 88
- Date d'édition : 04/2018
- DOI : http://dx.doi.org/10.1016/j.ijrefrig.2018.01.012
Liens
Voir d'autres articles du même numéro (57)
Voir la source
-
Numerical investigation of a forced-air cooled ...
- Auteurs : ZUBER B., HOPFGARTNER J., EGGERS A., et al.
- Date : 09/07/2018
- Langues : Anglais
- Source : 2018 Purdue Conferences. 17th International Refrigeration and Air-Conditioning Conference at Purdue.
- Formats : PDF
Voir la fiche
-
Comparison and possible improvements of heat tr...
- Auteurs : RIVIS E.
- Date : 12/05/1993
- Langues : Anglais
- Source : Energy Efficiency in Refrigeration and Global Warming Impact.
- Formats : PDF
Voir la fiche
-
Improved airside modeling of heat exchangers fo...
- Auteurs : WIMMER K.
- Date : 10/07/2022
- Langues : Anglais
- Source : 2022 Purdue Conferences. 19th International Refrigeration and Air-Conditioning Conference at Purdue.
- Formats : PDF
Voir la fiche
-
Comparison of the air-side heat transfer coeffi...
- Auteurs : LEE T. H., LEE J. S., OH S. Y., et al.
- Date : 16/07/2002
- Langues : Anglais
- Source : 2002 Purdue conferences. 2002 compressor engineering & refrigeration and air conditioning conferences at Purdue [CD-ROM].
Voir la fiche
-
Prediction of evaporator frosting in household ...
- Auteurs : BORGES B. N., MELO C., HERMES C. J. L.
- Date : 14/07/2014
- Langues : Anglais
- Source : 2014 Purdue Conferences. 15th International Refrigeration and Air-Conditioning Conference at Purdue.
- Formats : PDF
Voir la fiche