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|Title:||Simulation of air-supply systems efficiency in refrigerated vehicles to prevent food spoilage|
|Author(s):||Pitarma, R. A.|
Ramos, J. E.
Carvalho, M. G.
|Publisher:||Universidade de Trás-os-Montes e Alto Douro (UTAD)|
|Abstract(s):||An improper air distribution within refrigerated truck chambers is the major cause of inadequate road transport of perishable products under controlled temperature. Inadequate temperature control permits microbial and/or enzymatic deterioration. Experimental results in refrigerated long road vehicles show temperatures differences in the cargo of as much as 12ºC. This paper presents a computational model to predict, and visualize, the temperature conditions (e.g. velocity, temperature and relative humidity) in refrigerated truck chambers. The model consists of a computer procedure, in which the general equations describing the airflow pattern and the heat/mass transfer in a refrigerated room are solved using the finite volume method. The effect of turbulence is described by the k-ε turbulence model. The computer model was experimental validated by measurements taken from a reduced-scale model designed to provide similarity with a prototype. The model was applied to calculate the indoor cold conditions provided by different types of air supply systems used in compartments of long road vehicles.|
|Appears in Collections:||CEB - Artigos em Livros de Atas / Papers in Proceedings|
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