Temperature mapping of particles during aseptic processing with magnetic resonance imaging

Carlos A. Kantt; Shelly J. Schmidt; Charles E. Sizer; Sevugan Palaniappan; J. Bruce Litchfield

doi:10.1111/j.1365-2621.1998.tb15731.x

Temperature mapping of particles during aseptic processing with magnetic resonance imaging

Carlos A. Kantt, Shelly J. Schmidt, Charles E. Sizer, Sevugan Palaniappan, J. Bruce Litchfield

Research output: Contribution to journal › Article › peer-review

Abstract

Magnetic Resonance Imaging (MRI) was used to obtain 2-dimensional temperature maps in potatoes undergoing aseptic processing. The change in precession frequency of protons served as the temperature indicator. The larger particles (6.9 and 3.84 cm³) showed a ΔT (T(surface) - T(center)) of up to 22±0.4°C 45s after exiting the heat exchanger with the ΔT (T(outlet) - T(inlet)) of the carrier fluid in the heat exchanger at 30 to 45°C. No ΔT was measured between the center and the surface of particles <2.05 cm³ pumped at <22.7 L/min. The average fluid to particle convective heat transfer coefficient (h(fp)) for the heat exchanger and holding tube was calculated using a finite element method. The hfp was from 600 to 2500 and >3000 W/m² °C for the large (6.9 cm³ cubes) and smaller particles respectively.

Original language	English (US)
Pages (from-to)	305-311
Number of pages	7
Journal	Journal of food science
Volume	63
Issue number	2
DOIs	https://doi.org/10.1111/j.1365-2621.1998.tb15731.x
State	Published - Mar 1998
Externally published	Yes

Keywords

Aseptic processing
Magnetic resonance
Potato cubes
Temperature mapping

ASJC Scopus subject areas

Food Science

Online availability

10.1111/j.1365-2621.1998.tb15731.x

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title = "Temperature mapping of particles during aseptic processing with magnetic resonance imaging",

abstract = "Magnetic Resonance Imaging (MRI) was used to obtain 2-dimensional temperature maps in potatoes undergoing aseptic processing. The change in precession frequency of protons served as the temperature indicator. The larger particles (6.9 and 3.84 cm3) showed a ΔT (T(surface) - T(center)) of up to 22±0.4°C 45s after exiting the heat exchanger with the ΔT (T(outlet) - T(inlet)) of the carrier fluid in the heat exchanger at 30 to 45°C. No ΔT was measured between the center and the surface of particles <2.05 cm3 pumped at <22.7 L/min. The average fluid to particle convective heat transfer coefficient (h(fp)) for the heat exchanger and holding tube was calculated using a finite element method. The hfp was from 600 to 2500 and >3000 W/m2 °C for the large (6.9 cm3 cubes) and smaller particles respectively.",

keywords = "Aseptic processing, Magnetic resonance, Potato cubes, Temperature mapping",

author = "Kantt, {Carlos A.} and Schmidt, {Shelly J.} and Sizer, {Charles E.} and Sevugan Palaniappan and Litchfield, {J. Bruce}",

year = "1998",

month = mar,

doi = "10.1111/j.1365-2621.1998.tb15731.x",

language = "English (US)",

volume = "63",

pages = "305--311",

journal = "Journal of food science",

issn = "0022-1147",

publisher = "Wiley-Blackwell",

number = "2",

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T1 - Temperature mapping of particles during aseptic processing with magnetic resonance imaging

AU - Kantt, Carlos A.

AU - Schmidt, Shelly J.

AU - Sizer, Charles E.

AU - Palaniappan, Sevugan

AU - Litchfield, J. Bruce

PY - 1998/3

Y1 - 1998/3

N2 - Magnetic Resonance Imaging (MRI) was used to obtain 2-dimensional temperature maps in potatoes undergoing aseptic processing. The change in precession frequency of protons served as the temperature indicator. The larger particles (6.9 and 3.84 cm3) showed a ΔT (T(surface) - T(center)) of up to 22±0.4°C 45s after exiting the heat exchanger with the ΔT (T(outlet) - T(inlet)) of the carrier fluid in the heat exchanger at 30 to 45°C. No ΔT was measured between the center and the surface of particles <2.05 cm3 pumped at <22.7 L/min. The average fluid to particle convective heat transfer coefficient (h(fp)) for the heat exchanger and holding tube was calculated using a finite element method. The hfp was from 600 to 2500 and >3000 W/m2 °C for the large (6.9 cm3 cubes) and smaller particles respectively.

AB - Magnetic Resonance Imaging (MRI) was used to obtain 2-dimensional temperature maps in potatoes undergoing aseptic processing. The change in precession frequency of protons served as the temperature indicator. The larger particles (6.9 and 3.84 cm3) showed a ΔT (T(surface) - T(center)) of up to 22±0.4°C 45s after exiting the heat exchanger with the ΔT (T(outlet) - T(inlet)) of the carrier fluid in the heat exchanger at 30 to 45°C. No ΔT was measured between the center and the surface of particles <2.05 cm3 pumped at <22.7 L/min. The average fluid to particle convective heat transfer coefficient (h(fp)) for the heat exchanger and holding tube was calculated using a finite element method. The hfp was from 600 to 2500 and >3000 W/m2 °C for the large (6.9 cm3 cubes) and smaller particles respectively.

KW - Aseptic processing

KW - Magnetic resonance

KW - Potato cubes

KW - Temperature mapping

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JO - Journal of food science

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IS - 2

ER -

Temperature mapping of particles during aseptic processing with magnetic resonance imaging

Abstract

Keywords

ASJC Scopus subject areas

Online availability

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