A proposed heat engine is to produce 125 hp of power while receiving 160 Btu/s of heat. The engine receives heat at 1400 R and rejects heat at 650 R. Is this process possible?
Given: Proposed: TH = 1400 R; TC = 650 R; Q?H=160Btu/s; W?=125 hp=88.35Btu/s
What will be an ideal response?
Compare the actual proposed efficiency to the Carnot efficiency for the heat engine:
nproposed = W?Q?H = 0.552
nmax = 1 – TC/TH = 0.536
As nmax < nproposed, the process is impossible.
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