Ultrasonic tomography for in-process measurements of temperature in a multi-phase medium

Abstract

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Design of Conservative Simulated Particles for Validation of a Multiphase Aseptic Process

“…In a recent research study, a method of generating residence time measurements for particulate foods using magnetic implants and sensors was developed Simunovic 2003, 2004). Several methods have been proposed for real-time-temperature measurements in food particulates for validation, such as using small paramagnetic particles in the interior of simulated and real food particles (Ghiron and Litchfield 1997;Ghiron and Litchfield 1998), in-process measurement of internal particulate temperature utilizing ultrasonic tomography (Beller 1993), a method based on change in proton precession frequency with temperature (Kantt and others 1997), magnetic resonance imaging (MRI) (Kantt and others 1998) and microthermometry (Reiffel 2001;Higgins 2004). Saksena (2001) developed a noncontact system and method for effectively approximating the internal temperature of a food being cooked on a hot surface.…”