Chickens with an average mass of 1.7 kg (k = 0.45 W/m · °C and α = 0.13 × 10–6 m2/s) initi...

Chickens with an average mass of 1.7 kg (k = 0.45 W/m · °C and α = 0.13 × 10–6 m2/s) initially at a uniform temperature of 15°C are to be chilled in agitated brine at -7°C. The average heat transfer coefficient between the chicken and the brine is determined experimentally to be 440 W/m2 · °C. Taking the average density of the chicken to be 0.95 g/cm3 and treating the chicken as a spherical lump, determine the center and the surface temperatures of the chicken in 2 h and 45 min. Also, determine if any part of the chicken will freeze during this process.

FIGURE P18-62