Using a Rotating Magnetic Field for Milk Pasteurization

Résumé fourni par la source

We consider the energy-efficient milk pasteurization plant using an induction heating method. It is capable to provide the necessary milk temperature (from 65 to 95 o C) and uniform heating of the entire volume of milk. The plant is based on the stator of an asynchronous three-phase motor with a modified rotor. The know-how of the plant is that the rotating magnetic field of the stator pumps milk and inductively heats it. The modeling of thermal and hydrodynamic processes occurring in the plant confirmed the possibility of its use in the withstanding mode and in the flow mode of preheating. We proposed an algorithm of calculating the plant parameters to ensure the given temperature regime of the pasteurizer. With the help of the developed computational model of thermal and hydrodynamic processes in the considered plant, we formulated the requirements for the speed of rotation of the rotor and the power of heat generation in it. When implementing the electromagnetic model, the variants of the structural design of the elements of the heating system with the different number of blades and their different position on the rotor shaft were considered. The optimal parameters of the plant and the optimal current density were found. The considered plant can be recommended for creating the milk pasteurizer based on it after the detailed study of individual design elements before the beginning of the serial production.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.