Summary
A mathematical model is developed to analyse the performance of a vacuum cooler. The model is based on the mass conservation of air and vapour in the vacuum chamber. In the chamber, the vapour evaporated from foods under the vacuum and the vapour removed by the vapour-condenser and vacuum pump contribute to the variation in the vapour partial pressure, and the ingress air and the air released by the pump cause the change of air partial pressure. Experiments were carried out on vacuum cooling of water to validate the model. The predicted vacuum pressure and temperature histories are compared with the measured values. The maximum deviation between the predicted and measured vacuum pressure is within 110 Pa, while the maximum deviation between the predicted and measured temperature of water is less than 2 °C. The model can, therefore, be used to predict the transient vacuum pressure profiles for analysing the vacuum cooling process of foods such as cooked meat.
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Details
- Original title: Modelling vacuum cooling process of cooked meat. 1. Analysis of vacuum cooling system.
- Record ID : 2003-0866
- Languages: English
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 25 - n. 7
- Publication date: 2002/11
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Indexing
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Themes:
Food engineering;
Meat and meat products - Keywords: Food; Vacuum; Meat; Chilling; Cooked food; Process; Equipment
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Modelling vacuum cooling process of cooked meat...
- Author(s) : WANG L., SUN D. W.
- Date : 2002/11
- Languages : English
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 25 - n. 7
- Formats : PDF
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Simulation of vacuum cooling process of cooked ...
- Author(s) : WANG L. J., SUN D. W.
- Date : 2001/03/28
- Languages : English
- Source: Rapid Cooling of Food.
- Formats : PDF
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Development of a software package for analysing...
- Author(s) : WANG L. J., SUN D. W.
- Date : 2001/12/09
- Languages : English
- Source: Proceedings of the Second International Symposium on applications of modelling as an innovative technology in the agri-food chain. Model-IT 2001.
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Heat transfer characteristics of cooked meats u...
- Author(s) : SUN D. W., WANG L.
- Date : 2000/11
- Languages : English
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 23 - n. 7
- Formats : PDF
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Experimental analysis on moisture mouvement cha...
- Author(s) : JIN T. X., ZHENG Z. Y., CHEN H. X., et al.
- 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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