What is the maximum efficiency of a heat engine operating between 491 K and 228 K? Record your answer to the nearest percent.
What is the maximum efficiency of a heat engine operating between 491 K and 228 K?...
What is the theoretical maximum efficiency of a heat engine operating between 120∘C and 430∘C? (Express your answer to two significant figures.)
What is the Carnot efficiency (in percent) of a heat engine operating between the temperatures of 375°C (648 K) and 135°C (408 K)?
A heat engine operating between 30°C and 450°C has 22 % of maximum possible efficiency. If its power output is 125 kW, at what rate does the engine absorb heat?
A heat engine operates between 800 K and 300 K, but its efficiency is only 80% of the maximum possible. What is the actual efficiency of the engine? 30% 70% 38% 50% 36%
7. A heat engine has one-third the thermal efficiency of a Carnot engine operating between temperatures of 90 °C and 410 °C. If the heat engine absorbs heat at a rate of 54.0 kW, at what rate is heat exhausted?
A heat engine operating between energy reservoirs at 20 deg C and 620 deg C has 26 % of the maximum possible efficiency. How much energy must this engine extract from the hot reservoir to do 1200 J of work?
5. A certain heat engine operates between 1000 K and 500 K a) What is the maximum efficiency of the engine? (ANS: 0.5) b) Calculate the maximum work that can be done per kJ of heat supplied by the hot source. (ANS: 0.5 kJ) c) How much heat is discharged into the cold sink in a reversible process for each kJ supplied by the hot source? (ANS: 0.25)
2. A heat engine operates between a source at 1250 K and a sink at 300 K and is supplied with heat at a rate of 800 kJ/min. (a) What is the maximum thermal efficiency this heat engine could have? (b) What power output can one expect from this heat engine? You need to provide more than a numerical answer here!
Q25) A Carnot cycle heat engine operates between 337 K and 590 K. Its efficiency is ____%.
A Carnot engine operating at 35% efficiency exhausts heat into the heat sink at 320 ℃. If we want to increase the efficiency of the engine to 49%, without changing the temperature of the heat reservoir, what would be the new temperature of the heat sink?