A certain coal-fired power plant has a rated power capacity of P = 850 MW. The output of this plant is W = 0.26QH, where QH is the energy input as heat from the hot reservoir. a. If the power plant operates for a full day at its rated capacity, how much energy QH in MJ is needed?  b. If, on average, one ton of coal contains Q = 25 GJ of energy, how many tons nH of coal would the plant need to operate for a day at its rated capacity?  c. How many tons nC of this coal is exhausted as wasted heat to QC in a single day?

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A: TH = 1870 C  = 2143 K Tc = 430 C = 703 K QH = 1.9 x 105 J/s

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Q: One of the most efficient engines ever built is a coal-fired steam turbine engine in the Ohio River…

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