Characterization of airflow inside a refrigerated trailer loaded with carcasses - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement Access content directly
Conference Papers Year : 2017

Characterization of airflow inside a refrigerated trailer loaded with carcasses

Abstract

After slaughtering, pork carcasses should be cooled down as fast as possible to reach a core temperature of 7°C (recommended value) before transport in order to inhibit the growth of spoilage and pathogen microorganisms. To reach this temperature, carcasses are usually loaded into chiller rooms (15-20 hours) where the rate of cooling is controlled.To reduce the logistic time from slaughter house to cutting plant, a solution is proposed by loading the product into a trailer at core temperatures higher than 7°C. However, we have to asses that such a practice will not lead to a sanitary risk when applied to real scenario.In order to answer this issue, the first step will be to study the airflow characteristics within a trailer filled with pre-chilled pork carcasses. The objective of this study is to investigate experimentally the air velocity distribution in a reduced scale trailer filled with reduced scale carcass models under isothermal conditions. The 215 carcass models were made of polyurethane foam using a mold obtained by 3D printing based on X ray scanner of a real carcass. The Reynold number in the experimental device is the same as in a real trailer (Re∼1.3 x 10(5)). In this way, the airflow is similar to that observed in the real conditions. The velocity measurements have been carried out using 2D-LDV equipment (Laser Droplet Velocimetry) at different points in the symmetry plane of the filled trailer model. Pressure difference between top and bottom of the carcasses has also been measured in the same plane using a manometer.The analysis of the experimental results allows the understanding of the airflow magnitude and direction, thus, high and low velocity zones can be distinguished.
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Dates and versions

hal-02733743 , version 1 (02-06-2020)

Identifiers

  • HAL Id : hal-02733743 , version 1
  • PRODINRA : 421095

Cite

Mouna Merai, Denis Flick, Laurent Guillier, Steven Duret, Onrawee Laguerre. Characterization of airflow inside a refrigerated trailer loaded with carcasses. 3. International Conference on Food and Biosystems Engineering (I. C. FaBE 2017), Laboratory of Food & Biosystems Engineering (FABE Lab)., Jun 2017, Rhodes, Greece. 562 p. ⟨hal-02733743⟩
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