solution

A reversible power cycle whose thermal efficiency is 50% operates between a reservoir at 1800 K and a reservoir at a lower temperature T. Determine T, in K.

An inventor claims to have developed a device that executes a power cycle while operating between reservoirs at 900 and 300 K that has a thermal efficiency of (a) 66%, (b) 50%. Evaluate the claim for each case.

At steady state, a new power cycle is claimed by its inventor to develop 6 horsepower for a heat addition rate of 400 Btu/min. If the cycle operates between reservoirs at 2400 and 1000 R, evaluate this claim.