Need help for A, B, and C, thanks. 1. an electrical power plant has an overall...
Need help for A, B, and C, thanks.
1. an electrical power plant has an overall efficiency of 15%. The plant is to deliver 150 MW of electrical power to a city, and it turbines use coal as fuel. The burning coal produces steam at 190 C, which droves the turbines. The steam is condensed into water at 25C by passing through coils that are in contact with river water. Note: the heat of combustion of coal is 7.8 X 10^3 cal/g and 1 metric ton is 1 X 10^3 kg.
A) how many metric tons of coal does the plant consume each day?
B) what is the total cost of fuel per year if the delivery price are $8 per metric ton?
C) if the river water is delivered at 20 C, at what minimum rate must it flow over the cooling coils so that its temperature doesn't exceed 25C?
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Need help for A, B, and C, thanks.
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