6: The heat transfer explicitly for the reversible steady flow process 1-2-3-4-5-1 is
shown in the figure.
a. Calculate the total heat transfer in kJ/kg by showing each heat transfer in each
process explicitly.
b. If the heat transfer is 67 kJ during the process 2-3-4-5, determine the mass of the
body.
T
($^\circ$C)
4 2
850
500
200
3
5
0.2 0.4 0.7 1.6
1
s (kJ/kg K)