Eliminate heating the bodies of water surrounding the power

Reference no: EM13149871

A natural gas-fired electric power plant has an efficiency of 27 percent with 20 percent waste heat being released to the atmosphere as stack heat and the other 80% taken away in cooling water drawn from a nearby river (used to cool and condense down the hot steam exiting the generator turbines). To eliminate heating the bodies of water surrounding the power plant, the evaporation of the coolant water is what cools the steam; the water vapor generated by this evaporation is released to the atmosphere. Thus, the amount of heat dissipated will be proportional to the amount of water evaporated and the latent heat of vaporization. If the cooling water (marked "makeup water" in the illustration) can be supplied at the rate of 30,000 gallons per minute, what is the maximum power output of the power plant in MW? The river water is 15°C and all of it evaporates. The fact that the efficiency is less than 100% means the electric power output to be computed here is less than the total amount of heat created by the combustion of the fuel source.

Reference no: EM13149871

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