A power plant provides 11 MW of power and rejects 7 MW of h

. A power plant provides 11 MW of power and rejects 7 MW of heat into the river. What is its efficiency?

Solution

cycle efficiency = work done/heat generated

given W = 11 MW

from the cycle relationship between Q(H) , Q(L) and W

Q(H) = Q(L) + W

= 7 + 11 = 18 MW

therefore, efficiency = (11/18) x 100

= 61.1 %