physics

A Carnot engine is operated between two heat reservoirs at temperatures 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?

1. 👍 0
2. 👎 0
3. 👁 322
1. For a Carnot engine,

Qin/Qout = Tin/Tout = 520/300 = 1.733

Wout = Qin - Qout = Qin[1 - Qout/Qin]
= Qin[1 - (Tout/Tin)] = ___
Efficiency = Wout/Qin = __

1. 👍 0
2. 👎 0
posted by drwls
2. .935

1. 👍 0
2. 👎 0
posted by garret

Similar Questions

1. physics

A Carnot engine is operated between two heat reservoirs at temperatures 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

asked by Jen on December 2, 2007
2. physics

A Carnot engine, operating between hot and cold reservoirs whose temperatures are 800.0 and 400.0 K, respectively, performs a certain amount of work W1. The temperature of the cold reservoir is then lowered to 200.0 K (see the

asked by Aryiana on December 1, 2011
3. Physic II

a carnot heat engine operates between reservoirs at 550K and 300K, discarding 1500J of heat in each cycle. A) What is the engine's efficiency? B) How much heat is supplied to the engine by the hot reservoir in each cycle?

asked by rujiye on April 30, 2014
4. Phyics

A Carnot engine has 200 g of helium as its working substance and operates between two reservoirs which are at temperatures of 500C and 30C. The initial volume of the gas is 20 litres while the volume after isothermal

asked by Physics on July 21, 2010
5. HELP! Physics

A heat engine operates between two reservoirs at temperatures of 19.7oC and 294oC. What is the maximum efficiency possible for this engine?

asked by Erika on November 16, 2012
6. chem

Consider a Carnot engine operating between the temperatures of 300. K and 189 K. Find the efficiency of this engine. Assume, now, that the isothermal step at 300. K is not reversible and the expansion takes place against a

asked by Chris on March 5, 2007
7. thermodynamics

3.4 A heat engine operates between two heat reservoirs with temperatures of 560 and 280 K a) The heat engine itself has a temperature of 560 K during heat addition from the 560 K reservoir and a temperature of 280 K during heat

asked by jody on June 15, 2007
8. physics

The hot reservoir for a Carnot engine has a temperature of 926 K, while the cold reservoir has a temperature of 441 K. The heat input for this engine is 3730 J. The 441-K reservoir also serves as the hot reservoir for a second

asked by angie on December 1, 2012
9. physics

A Carnot refrigerator is operating between thermal reservoirs with temperatures of 27.9°C and 0.0°C. a) How much work will need to be input to extract 13.7 J of heat from the colder reservoir? b) How much work will be needed if

asked by maria on January 4, 2012
10. science

An ideal gas for which Cv = 3R/2 is the working substance of a Carnot engine. During the isothermal expansion, the volume doubles. The ratio of the final volume to the initial volume in the adiabatic expansion is 5.7. The work

asked by juniah on April 3, 2014

More Similar Questions