Answer:
a) The schematic illustrating is attached
b) The heat transfer to the heat engine is 2142.86 kJ, the heat transfer from the heat engine is 1392.86 kJ
c) The heat transfer to the heat engine is 1648.35 kJ, the heat transfer from the heat engine is 898.35 kJ
Explanation:
b) The heat transfer to the engine and the heat transfer from the engine to the air is:
[tex]Q_{1} =\frac{W}{n}[/tex]
Where
W = 750 kJ
n = 35% = 0.25
Replacing:
[tex]Q_{1} =\frac{750}{0.35} =2142.86kJ[/tex]
[tex]Q_{2} =Q_{1} -W=2142.86-750=1392.86kJ[/tex]
c) The efficiency of Carnot engine is:
[tex]n=1-\frac{300K}{550K} =0.455[/tex]
The heat transfer to the heat engine is:
[tex]Q_{1c} =\frac{750}{0.455} =1648.35kJ[/tex]
The heat transfer from the heat engine is:
[tex]Q_{2c} =1648.35-750=898.35kJ[/tex]