62. A Carnot engine operates between the temperatures Th = 1.00 x 102° C and Te...
A Carnot engine operates between the temperatures Th 100°C and Tc 30°C. By what factor does the theoretical efficiency increase if the temperature of the hot reservoir is increased to 565°C? c, new
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 gas-cooled nuclear reactor operates between hot and cold reservoir temperatures of 670°C and 20.0°C. (a) What is the maximum efficiency (in percent) of a heat engine operating between these temperatures? % (b) Find the ratio of this efficiency to the Carnot efficiency of a standard nuclear reactor (47.6%). Eff Eff (b)
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 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?
An ideal Carnot thermodynamic engine has an efficiency of 0.600. If it operates between a deep lake with a constant temperature of 294 K and a hot reservoir, what is the temperature of the hot reservoir? a. 735 Kelvin b. 490 Kelvin c. 570 Kelvin d. 784 Kelvin
A heat engine operates in a Carnot cycle between 80°C and 350°C. It receives 21,000 J of energy per cycle from the hot reservoir. The duration of each cycle is 1.00 s. What is the mechanical power of this engine? Select one: a. 21 kw b. 910 kW c. 9.10 kW d. 120 kW
A Carnot heat engine operates between reservoirs at 164 ∘C and 0∘C. If the engine extracts 22 J of energy from the hot reservoir per cycle, how many cycles will it take to lift a 12 kg mass a height of 10 m?
A nuclear power plant operates at 72 % of its maximum theoretical (Carnot) efficiency between temperatures of 630 ∘C and 370 ∘C. If the plant produces electric energy at the rate of 1.4 GW , how much exhaust heat is discharged per hour?