At steady state, a new power cycle is claimed by its inventor to develop net power at a rate of (a) 3.75 hp, (b) 4.29 hp for a heat addition rate of 300 Btu/min, while operating between hot and cold reservoirs at 2000°R and 500°R, respectively. Evaluate each claim. Part A What is the thermal efficiency for the conditions of case (a)? Is the inventor's claim possible for the conditions of case (a)? na The claims is %

At steady state, a new power cycle is claimed by its inventor to develop net power at a rate of (a) 3.75 hp, (b) 4.29 hp for a heat addition rate of 300 Btu/min, while operating between hot and cold reservoirs at 2000°R and 500°R, respectively. Evaluate each claim. Part A What is the thermal efficiency for the conditions of case (a)? Is the inventor's claim possible for the conditions of case (a)? na The claims is %

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter4: The Second Law Of Thermodynamics

Section: Chapter Questions

Problem 64P: A Carnot engine has an efficiency of 0.60. When the temperature of its cold reservoir the efficiency...

See similar textbooks

Similar questions

A Carnot cycle working between 100 and 30 is used to drive a refrigerator between 10 and 30 . How much energy must the Carnot engine produce per second so that the refrigerator is able to discard 10 J of energy per second?
If a refrigerator discards 80 J of heat per cycle and its coefficient of performance is 6.0, what are (a) the quantity off heat it removes per cycle from a cold reservoir and (b) the amount of work per cycle required for its operation?
A Carnot engine has an efficiency of 0.60. When the temperature of its cold reservoir the efficiency drops to 0.55. If initially Tc=27, determine (a) the constant value of Th and (b) the final value of Tc.
The energy output of a heat pump is greater than the energy used to operate the pump. Why doesn't this statement violate the first law of thermodynamics?
Check Your Understanding A Carnot engine operates between reservoirs at 400 and 30 . (a) What is the efficiency of the engine? (b) If the engine does 5.0 J of work per cycle, how much heat per cycle does it absorb from the high-temperature reservoir? (c) How much heat per cycle does it exhaust to the cold-temperature reservoir? (d) What temperatures at the cold reservoir would give the minimum and maximum efficiency?
The motor in a refrigerator has a power of 200W. If the freezing compartment is at 270 K and the outside air is at 300 K, and assuming the efficiency of a Carnot refrigerator, what is the maximum amount of energy that can be extracted as heat from the freezing compartment in 10.0 min?
A power cycle operating at steady state receives energy by heat transfer at a rate QH= 500kW at TH = 1000K and rejects heat to a cold reservoir at a rate QL= 100kW at TL= 300K. Which ofthe following choices is true? a] reversible b] irreversible or c] impossible? Show your solution and justification.
A Carnot engine performs work at the rate of 450 kW while using 950 kcal of heat per second. If the temperature of the heat source is 560 ∘C, at what temperature is the waste heat exhausted?
What is the efficiency of a gasoline engine that receives 194.5 J of energy from combustion and loses 143.4 J by heat to the exhaust during one cycle?
What is the ideal efficiency of a reversible heat engine cyclically operating between a source temperature of 600 degrees Kelvin and a sink temperature of 150 degrees Kelvin?
Consider a heat engine that uses reservoirs at 800.°C and 0.00 °C. Calculate the maximum possible efficiency (in %).Answer in 3 Sigfigs
The energy transferred by heat from an engine during one cycle is 500 J. How much energy must be added to the engine so that it can operate at 30%efficiency?