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)?
What is the Carnot efficiency (in percent) of a heat engine operating between the temperatures of...
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 Carnot engine is operated between two heat reservoirs at temperatures of 520 K and 300 K. a) If the engine receives 6.45 kJ of heat energy from the reservoir at 520 K in each cycle, how many joules per cycle does it reject to the reservoir at 300 K? b) How much mechanical work is performed by the engine during each cycle? c) What is the thermal efficiency of the engine?
SP3. A Carnot engine operating in reverse as a heat pump moves heat from a cold reservoir at 7°C to a warmer one at 22°C. a) What is the efficiency of a Carnot engine operating between these two temperatures? b) If the Carnot heat pump releases 250 J of heat into the higher-temperature reservoir e co in each cycle, how much work must be provided in each cycle? c) How much heat is removed from the 7°C reservoir in each...
A Carnot engine works between two heat reservoirs at temperatures Th = 360 K and Tc = 240 K. (a) What is its efficiency? % (b) If it absorbs 95 J from the hot reservoir during each cycle, how much work does it do? J (c) How much heat does it give off during each cycle? J (d) What is the COP of this engine when it works as a refrigerator between the same two reservoirs?
12. A Carnot engine operating at 34% efficiency exhausts heat into the heat sink at 350 °C. If we want to increase the efficiency of the engine to 46%, without changing the temperature of the heat reservoir, what would be the new temperature of the heat sink?
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?
4. A Carnot engine works between two heat reservoirs at temperatures Ty 300 K & Te -77.0 a. What is its efficiency? b. If it absorbs c. How much heat does it release to the low- d. Wha 100 J of heat from the hot reservoir during each cycle, how much work does it do? t is the coefficient of performance of this engine when it works as a refrigerator between temperature reservoir during each cycle? these two reservoirs?
A Carnot engine operates between temperatures of 710 and 339 K. To improve the efficiency of the engine, it is decided either to raise the temperature of the hot reservoir by 41 K or to lower the temperature of the cold reservoir by 41 K. Which change gives the greatest improvement? raise the temperature of the hot reservoir? or lower the temperature of the cold reservoir? Justify your answer by calculating the efficiency in each case. raise TH ____ lower...
A Carnot engine operates between temperatures of 665 and 315 K. To improve the efficiency of the engine, it is decided either to raise the temperature of the hot reservoir by 39 K or to lower the temperature of the cold reservoir by 39 K. Which change gives the greatest improvement? raise the temperature of the hot reservoir lower the temperature of the cold reservoir Correct: Your answer is correct. Justify your answer by calculating the efficiency in each case....
A Carnot engine works between two heat reservoirs at temperatures Thot=300.0K and Tcold=230.0K. What is its efficiency? If it absorbs 140.0J from the hot reservoir during each cycle, how much work does it do? How much heat does it reject during each cycle? What is the coefficient of perfomance, COP, of this engine when it works as a refrigerator between the same two reservoirs?