A proposed heat engine receives heat at 500 K and rejects heat at 350 K. The engine is to produce 100 kW of power from a heat input of 150 kW. Is this process possible?
Given: Proposed: TH = 500 K; TC = 350 K; Q?H=150 kW; W?=100 kW
What will be an ideal response?
Compare the actual proposed efficiency to the Carnot efficiency for the heat engine:
nproposed = W?Q?H = 0.667
nmax = 1 – TC/TH = 0.30
As nmax < nproposed, the process is impossible.
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