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kboykb
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Homework Statement
(c13p30) A steam-electric power plant delivers 900 MW of electric power. The surplus heat is exhausted into a river with a flow of 6.29×10^5 kg/s, causing a change in temperature of 1.03 oC. What is the efficiency of the power plant (in % Don't enter a unit.)?
Homework Equations
Not sure with this one. Efficiency = 1 - Tc/Th, or Efficiency = W/Qh
The Attempt at a Solution
900MW = 900,000,000 J/s
900,000,000 J/s / 629,000 kg/s = 1430.8
1.03 Deg C = 274.18 K
274.18 K / 1430.8 = .19
So 19%