The efficiency of a Carnot's cycle is 1/5. If on reducing the temperature of the cold bodyby 55°C, then the efficiency becomes 1/3, calculate the initial and final temperaturesbetween which the cycle is working.(a) 412°C, 330°C(b) 139°C, 57.0°С(с) 110°С, 45.0°C(d) 190°C, 45.0°

The efficiency of the Carnot engine whose initial and final temperatures are T1 and T2.The…

Answered: The efficiency of a Carnot's cycle is…

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter18: Heat Engines, Entropy, And The Second Law Of Thermodynamics

Section: Chapter Questions

Problem 21P

See similar textbooks

Similar questions

A car tile contains 0.0380 m3 of air at a pressure of 2.20105 Pa (about 32 psi). How much more internal energy does this gas have than the same volume has at zero gauge pressure (which is equivalent to normal atmospheric pressure)?
A refrigerator has a coefficient of performance of 2. The ice (cice = 2090 J/kg.°C) tray compartment is at –12°C, and the room temperature is 48°C. The refrigerator can convert 2.44 g of water (cwater= 4186 J/kg.°C) at 48°C to 2.44 g of ice at -12°C each minute. What input power (in W) is required? (Answer in 2 decimal places) A Moving to another question will save this response. « Close Window
A refrigerator has a coefficient of performance of 2. The ice (cice = 2090 J/kg.ºC) tray compartment is at -14°C, and the %3D room temperature is 55°C. The refrigerator can convert 4.49 g of water (cwater = 4186 J/kg.°C) at 55°C to 4.49 g of ice at -14°C each minute. What input power (in W) is required? (Answer in 2 decimal places)
A refrigerator has a coefficient of performance of 2. The ice (cice = 2090 J/kg.°C) tray compartment is at-18°C, and the room temperature is 48°C. The refrigerator can convert 4.47 g of water (cwater = 4186 J/kg.°C) at 48°C to 4.47 g of ice at-18°C each minute. What input power (in W) is required? (Answer in 2 decimal places) « K Question 2 of 25> A Moving to another question will save this response. Adaptive 44HZ SÝNC ASUS
A heat engine uses a heat source at 530 ∘C and has an ideal (Carnot) efficiency of 28 % . To increase the ideal efficiency to 43 % , what must be the temperature of the heat source?
one of the most efficient engines ever built (actual efficiency 42.0%) operates between 430°C and 1 870°C. (a) What is its maximum theoretical efficiency? (b) How much power does the engine deliver if it absorbs 1.40 105 J of energy each second from the hotreservoir?
If an engine operates between 269°C and 26°C, what is its maximum thermodynamic efficiency (as a percentage)?
A refrigerator has a coefficient of performance of 2. The ice (cice = 2090 J/kg.ºC) tray compartment is at –14°C, and the room temperature is 55°C. The refrigerator can convert 4.49 g of water (cwater = 4186 J/kg.ºC) at 55°C to 4.49 g of ice at –14°C each minute. What input power (in W) is required? (Answer in 2 decimal places) A Moving to another question will save this response. < Question 11 of 12
Air is compressed in an adiabatic compressor reversibly from 60.0 kPa and 20°C to 750 kPa. What percentage of work input is transferred to the air as thermal energy or heat? (Round the final answer to three decimal places.) 0% of work input is transferred to the air as thermal energy or heat.
The rate of heat leaking into a house from the warmer outdoors is given by A(TH – TC) where TC and TH denote the indoor and outdoor temperatures, respectively, and A is a constant. 1) If the outdoor temperature is 36°C, what will be the ratio of the power required to maintain an indoor temperature of 21°C to that required to maintain an indoor temperature of 25°. Assume the air conditioning system operates at its maximum possible coefficient of performance.
One of the most efficient engines ever built is a coal-fired steam turbine engine in the Ohio River valley, driving an electric generator as it operates between 1,870°C and 430°C. (a) What is its maximum theoretical efficiency? (b)Its actual efficiency is 42.0%. How much mechanical power does the engine deliver if it absorbs 1.35 ✕ 105 J of energy each second from the hot reservoir?
(a) What is the best coefficient of performance for a refrigerator that cools an environment at -28.5°C and has heat transfer to another environment at 46.5°C? 3.262 (b) How much work in joules must be done for a heat transfer of 4186 kJ from the cold environment? 1283.26 (c) What is the cost (in cents) of doing this if the work costs 15.0 cents per 3.60 x 106 J (a kilowatt-hour)? 5.35 (d) How many k) of heat transfer occurs into the warm environment? 5469.26 kJ (e) Discuss what type of refrigerator might operate between these temperatures. The inside of the refrigerator (actually freezer) is at (-28.5 °C) so this probably is a commercial meat packing freezer. The exhaust is generally vented to the outside so as to not heat the building too much.

SEE MORE QUESTIONS

Recommended textbooks for you

Principles of Physics: A Calculus-Based Text

Physics

ISBN:

9781133104261

Author:

Raymond A. Serway, John W. Jewett

Publisher:

Cengage Learning

University Physics Volume 2

Physics

ISBN:

9781938168161

Author:

OpenStax

Publisher:

OpenStax

Principles of Physics: A Calculus-Based Text

Physics

ISBN:

9781133104261

Author:

Raymond A. Serway, John W. Jewett

Publisher:

Cengage Learning

University Physics Volume 2

Physics

ISBN:

9781938168161

Author:

OpenStax

Publisher:

OpenStax

SEE MORE TEXTBOOKS

The efficiency of a Carnot's cycle is 1/5. If on reducing the temperature of the cold body by 55°C, then the efficiency becomes 1/3, calculate the initial and final temperatures between which the cycle is working. (a) 412°C, 330°C (b) 139°C, 57.0°С (с) 110°С, 45.0°C (d) 190°C, 45.0°