Assume that a food particle is considered to be sterilized when its center reaches a presumed sterilizing temperature of 115°C. The density, specific heat, and thermal conductivity of food are 850 kg/...

Assume that a food particle is considered to be sterilized when its center reaches a presumed sterilizing temperature of 115°C. The density, specific heat, and thermal conductivity of food are 850 kg/ m3 , 1680 J / kg· K, and 1.42 W / m k, respectively. For the two heat transfer coefficients given in Problem 5.4, calculate the difference in heating time that would be necessary to sterilize a spherical food particle of 5 mm radius initially at a temperature of 30°C, immersed in water that is at a temperature of 121 °C. Note: Requires interpolation in Heisler's charts.