The thermophysical properties of liquid egg over a wide range of temperature is of utmost<br>importance for evaluating, designing and modeling of heat treatment processes, such as<br>pasteurization on plate heat exchangers. This paper presents empirical correlations to predict the<br>specific heat, thermal conductivity and density of the egg yolk for a temperature range that is<br>compatible with the industrial thermal processing of liquid egg (0 to 61 °C). Rheological parameters<br>for the power-law model are as well correlated with the temperature for the egg yolk. The obtained<br>correlations are used for the simulation of the egg yolk pasteurization process. A plate heat<br>exchanger model for generalized configurations is applied to generate the temperature profiles in all<br>the exchanger channels. The temperature profiles in the plate heat exchanger and in the holding tube<br>are further used for the determination of the extension of the thermal inactivation of the process.<br>With the simulation of the plate heat exchanger using reliable correlations for the thermophysical<br>properties, it is possible to design more accurately the pasteurization equipment to ensure the<br>inactivation of harmful microorganisms while preserving the food nutrients and characteristics. ...
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