The following physical properties for carcass cooling: p = 1073 kg / m3, cp = 2.48 kJ / kg ° K and k = 0.798 W / m * K. It is desired to cool a large cut 0.153 m thick, which is initially at a uniform...

The following physical properties for carcass cooling: p = 1073 kg / m3, cp = 2.48 kJ / kg ° K and k = 0.798 W / m * K. It is desired to cool a large cut 0.153 m thick, which is initially at a uniform temperature of 37.8 "C, such that the center temperature is 4 ° C. Cooling air is used at -18 ° C (temperature assumed constant) and whose value of h = 25 W / m2 ° K.
a) Make a schematic statement of the problem.
b) Calculate the cooling time.