At a steam power plant, steam engines work in pairs, the output of heat from one being the approximate heat input of the second. The operating temperatures of the first are 700°C and 410°C, and of the second 410°C and 270°C. If the heat of combustion of coal is 2.8 107 J/kg, at what rate must coal be burned if the plant is to put out 1300 MW of power? Assume the efficiency of the engines is 59 percent of the ideal (Carnot) efficiency.
extremely hard physics problem for me?
- Thread starter James
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