(a)
The Carnot efficiency.
(a)
Answer to Problem 5SP
The Carnot efficiency is
Explanation of Solution
Given info: The temperature range of the turbine is
Write an expression to calculate the efficiency.
Here,
Substitute
Thus, the Carnot efficiency is
Conclusion:
The Carnot efficiency is
(b)
The efficiency of the actual oil-fired turbines.
(b)
Answer to Problem 5SP
The efficiency of the actual oil-fired turbines is
Explanation of Solution
Write an expression for efficiency of the actual oil-fired turbines.
Here,
Substitute
Thus, the efficiency of the actual oil-fired turbines is
Conclusion:
Therefore, the efficiency of the actual oil-fired turbines is
(c)
The electrical energy generated by the plant in one hour.
(c)
Answer to Problem 5SP
The electrical energy generated by the plant in one hour is
Explanation of Solution
Given info: The power of the oil-fired power plant is
Write an expression for electrical energy generated by the plant in one hour.
Here,
Substitute
Thus, the electrical energy generated by the plant in one hour is
Conclusion:
The electrical energy generated by the plant in one hour is
(d)
The heat obtained from oil in each hour.
(d)
Answer to Problem 5SP
The heat obtained from oil in each hour is
Explanation of Solution
Write an expression for efficiency of the actual oil-fired turbines.
Here,
Substitute
Thus, the heat obtained from oil in each hour is
Conclusion:
The heat obtained from oil in each hour is
(e)
The amount of oil required to produce
(e)
Answer to Problem 5SP
The amount of oil required to produce
Explanation of Solution
Write an expression for the amount of oil required to produce
Here,
Substitute
Thus, the amount of oil required to produce
Conclusion:
The amount of oil required to produce
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Chapter 11 Solutions
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