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PARTICLE CONCENTRATION INFLUENCE ON LIQUID RESIDENCE TIME DISTRIBUTIONS IN A MODEL ASEPTIC PROCESSING SYSTEM 1
Author(s) -
LEE JUN H.,
SINGH RAKESH K.,
LINEBACK D. SCOTT
Publication year - 1995
Publication title -
journal of food process engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.507
H-Index - 45
eISSN - 1745-4530
pISSN - 0145-8876
DOI - 10.1111/j.1745-4530.1995.tb00359.x
Subject(s) - residence time (fluid dynamics) , particle (ecology) , tube (container) , aseptic processing , chemistry , particle size , particle size distribution , chromatography , mechanics , materials science , composite material , physics , food science , geotechnical engineering , engineering , oceanography , geology
Residence time distributions (RTDs) of water as influenced by particle concentration and mutator speed (SSHE only) were investigated in a holding tube and a horizontal scraped surface heat exchanger (SSHE). Liquid mean residence times (LMRTs) were not significantly influenced by particle concentrations up to 30% in the holding tube. Variance, on the other hand, was significantly higher without particle loading, indicating a broader distribution. About 20% particle loading significantly reduced the LMRTs regardless of the mutator speed. In addition, an increase in the mutator speed significantly increased the variance regardless of the particle concentration, indicating a broader distribution. the variance in SSHE was not significantly influenced by the particle concentration, unlike the holding tube. the LMRTs calculated from volumetric flow rates were lower than those from pulse input experiments for both holding tube and SSHE.