Location of the Slowest Heating Zone for Natural-Convection-Heating Fluids in Metal Containers.

Autor: ZECHMAN, L G., PFLUG, I. J.
Předmět:
Zdroj: Journal of Food Science (Wiley-Blackwell); Jan1989, Vol. 54 Issue 1, p205-209, 5p
Abstrakt: Studies were conducted to locate the slowest heating zone (SHZ) along the vertical axis of vertically positioned containers for 16 liquids of different physical properties in 211 x 400 metal containers and for water in 13 sizes of metal container, and to assess significance of the findings for the design of thermal processes. For conditions tested, SHZ was found near the container bottom. The SHZ for natural-convection-heating products is usually located no higher than 25% of the container height above the container bottom. The SHZ's location is most critical in thermal process design for liquids of high initial viscosity in small containers where there is a large difference in temperature between heating medium and SHZ at the end of heating. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index