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Chapter 21: Q. 24 (page 595)
At what cold-reservoir temperature inwould a Carnot engine with a hot-reservoir temperature of have an efficiency of
Cold-reservoir temperature for carnot engine is.
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A -efficient electric power plant produces of electric power and discharges waste heat into ocean water. Suppose the waste heat could be used to heat homes during the winter instead of being discharged into the ocean. A typical American house requires an average of for heating. How many homes could be heated with the waste heat of this one power plant?
It gets pretty hot in your apartment. In browsing the Internet, you find a company selling small "room air conditioners." You place the air conditioner on the floor, plug it in, and-the advertisement says_it will lower the room temperature up to . Should you order one? Explain.
of work are done per cycle on a refrigerator with a coefficient of performance of . How much heat is (a) extracted from the cold reservoir and (b) exhausted to the hot reservoir per cycle?
The first and second laws of thermodynamics are sometimes stated as "You can't win" and "You can't even break even." Do these sayings accurately characterize the laws of thermodynamics as applied to heat engines? Why or why not?
In Problems 67 through 70 you are given the equation(s) used to solve a problem. For each of these, you are to
a. Write a realistic problem for which this is the correct equation(s).
b. Draw a pVdiagram.
c. Finish the solution of the problem.
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