A 600-MW electric power plant has an efficiency of 30%.It loses its waste heat in large cooling towers.Approximately how much waste heat (in MJ)is discharged to the atmosphere per second?
A) 1400 MJ
B) 1900 MJ
C) 800 MJ
D) 560 MJ

Question

Quizplus · Accepted Answer

The power plant has an efficiency of 30%, meaning 30% of the input energy is converted to electricity, and 70% is waste heat. The total energy input is 600 MW / 0.3 = 2000 MW. The waste heat is 70% of this, which is 1400 MW or 1400 MJ/s.

A 600-MW Electric Power Plant Has an Efficiency of 30