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Details van artikel 10 van 13 gevonden artikelen
| Titel: |
NUMERICAL ANALYSIS OF ASEPTIC PROCESSING OF A NON-NEWTONIAN LIQUID FOOD IN A TUBULAR HEAT EXCHANGER |
| Auteur: |
Kumar, Ashwini Bhattacharya, Mrinal |
| Verschenen in: |
Chemical engineering communications |
| Paginering: | Jaargang 103 (1991) nr. 1 pagina's 27-51 |
| Jaar: |
1991-04-01 |
| Inhoud: |
The aseptic processing of a non-Newtonian fluid in a tubular heat exchanger with no holding section was simulated numerically. Two tube diameters (1·270 × 10-2 m and 1·905 × 10-2 m), two process temperatures (410 K and 422 K) and three flow rates (1·0, 1·5 and 2·0L/min) were included in the analysis. A model liquid food with temperature dependent and shear thinning viscosity was used. For each case, the length of heating section needed to provide a required lethality (F0) of approximately 6·0 min on the center line for low-acid foods was calculated. The lethalities for Clostridium botulinum and other microorganisms of interest were calculated using the modified General Method. Increasing the temperature from 410 K to 422 K decreased the required length of the heating section by about 20 to 30% for the same average velocity. Thiaminc retention was also calculated for each case and was found to be higher for a smaller diameter tube and lower temperature. The liquid traveling near the wall was predicted to be highly overprocessed and retained less than 10% thiamine |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 10 van 13 gevonden artikelen
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