NDLI: Particle velocity measuring system

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Particle velocity measuring system

Content Provider	NASA Technical Reports Server (NTRS)
Copyright Year	1998
Description	Method and apparatus are provided for determining the velocity of individual food particles within a liquid/solid food mixture that is cooked by an aseptic cooking method whereby the food mixture is heated as it flows through a flowline. At least one upstream and at least one downstream microwave transducer are provided to determine the minimum possible travel time of the fastest food particle through the flowline. In one embodiment, the upstream detector is not required. In another embodiment, a plurality of small dipole antenna markers are secured to a plurality of food particles to provide a plurality of signals as the markers pass the upstream and downstream transducers. The dipole antenna markers may also include a non-linear element to reradiate a harmonic frequency of a transmitter frequency. Upstream and downstream transducers include dipole antennas that are matched to the impedance of the food slurry and a signal transmission cable by various impedance matching means including unbalanced feed to the antennas.
File Size	1267199
Page Count	13
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19980203096
Archival Resource Key	ark:/13960/t3kx0bh02
Language	English
Publisher Date	1998-04-21
Access Restriction	Open
Subject Keyword	Patents Transducers Dipole Antennas Multiphase Flow Microwave Equipment Frequencies Food Processing Particles Solid Solutions Impedance Matching Flow Velocity Signal Transmission Velocity Measurement Food Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Patent

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