Answer:
17280 Giga joule
Explanation:
Carnot engine efficiency =[tex]1- \frac{T_{L} }{T_{H} }[/tex]
So maximum efficiency = [tex]1-\frac{350}{500}[/tex] =[tex]0.3[/tex]
Produced energy =1.45 Giga-Watts
This energy is 75% of total theoretical energy produced.
Let total energy is produced from plant be x.
[tex]x*\frac{75}{100} = 1.4 Giga Watts[/tex]
⇒ x = 1.86 Giga Watts
Energy lost = 1.86-1.4= 0.46 Giga Watts
Now Heat expelled in engine to sink
Let total heat provided be y.
0.3*y= 1.86
y= 6.2 Giga Watts
Energy lost in engine = 6.2-1.86 =4.34 Giga Watts
Total energy lost = 4.34 Giga Watts + 0.46 Giga Watts =4.8 Giga watts
For calculating per hour energy discharged multiply it by an hour
=4.8 *60 *60= 17280 Giga joule
