NameChapter 24 ThermodynamicsCarnot EfficiencyA 25-kW heat engine operates between a 3200-K hot reservoir and a 450-Kcold reservoir. What is the engine's Carnot, or ideal, efficiency?Read and UnderstandWhat information are you given?Power of engine = 25 kWHigh-temperature reservoir, Thot = 3200 KClassLow-temperature reservoir, Tcold = 450 K=dePlan and SolveWhat unknown are you trying to calculate?Carnot efficiency = ?What formula contains the given quantity and the unknown?Thot-TeoldCarnot efficiency:ThotSubstitute the known values and solve.Note that because the hot and cold reservoir temperatures are given inkelvins, they can be directly substituted into the equation.Carnot efficiencyThot - TcoldThot3200 K-450 K3200 K=HOBS syna)2900= 0.86 or 86% ritottal onl obaIsmen 180Mghol sdt al dLook back and checkolarit niIs your answer reasonable? ob lliwYes, a high efficiency is expected due to the large difference between the Abreservoir temperatures.orii bsiMath Practicea separate sheet of paper, solve the following problems.te grien Inily n1. A heat engine has a hot-reservoir temperature of 1200°C. Its cold-reservoir temperature is room temperature air. What is the Carnotefficiency of the engine? (Note that room temperature air is about 25°C.)2. A heat engine has an efficiency of 52% when it runs with a hot-reservoirtemperature of 400°C and cold-reservoir temperature of 50°C. What isthe efficiency if the hot-reservoir temperature is raised to 800°C?

Answered: Image /qna-images/answer/839b015c-1f7b-4979-8e29-fe66e3f1b14b.jpg

On a separate sheet of paper, solve the following problems. vgrans grien Imusly 1. A heat engine has a hot-reservoir temperature of 1200°C. Its cold- reservoir temperature is room temperature air. What is the Carnot efficiency of the engine? (Note that room temperature air is about 25°C.) 2. A heat engine has an efficiency of 52% when it runs with a hot-reservoir temperature of 400°C and cold-reservoir temperature of 50°C. What is the efficiency if the hot-reservoir temperature is raised to 800°C?

On a separate sheet of paper, solve the following problems. vgrans grien Imusly 1. A heat engine has a hot-reservoir temperature of 1200°C. Its cold- reservoir temperature is room temperature air. What is the Carnot efficiency of the engine? (Note that room temperature air is about 25°C.) 2. A heat engine has an efficiency of 52% when it runs with a hot-reservoir temperature of 400°C and cold-reservoir temperature of 50°C. What is the efficiency if the hot-reservoir temperature is raised to 800°C?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Related questions

Q: Suppose you spend 30.0 minutes on a stair-climbing machine, climbing at a rate of 65 steps per…

A: Given data:Total time spent=30 min Rate of climbing=65 steps per minHeight of each step=8.0…

Q: What is the entropy change for an energy reservoir at 700 degrees Celsius that transfers 1500kJ of…

A: Given Temperature of reservoir = 700 °C Heat transfer from the reservoir = 1500 kJ We have the…

Q: containing infinite energy at temperature Th. But you’ve only got a finite cool reservoir, with…

Q: Imagine a Carnot engine is designed to have a cold reservoir of 17° C and a hot reservoir at 570° C.…

Q: “A refrigerator takes in 20 J of work and exhausts 50 J of heat. What is the refrigerator’s…

A: The objective of this question is to calculate the coefficient of performance of a refrigerator,…

Q: 5. A Carnot engine works between two heat reservoirs at temperatures Thot= 301.0 K and Tcold= 220.0…

A: Tcold = 220 K Thot = 301 K Coefficient of performance = Tcold/(Thot - Tcold)Coefficient of…

Q: An ideal monatomic gas initially has a temperature of 345 K and a pressure of 5 atm. It is to expand…

Q: the entropy change of the gas from before the valve o

A: No of moles n = 6.50 moles R = 8.314 J/mole Intial volume v1 = V Final volume v2 = 2V

Q: Needs Complete solution with 100 % accuracy don't use chat gpt or ai please plz plz plz plz.

A: Step 1:Step 2:

Q: Question 6 A process is known to be spontaneous. This means that O entropy must increase only if the…

A: The entropy of the universe increases in a spontaneous process and remains unchanged in an…

Q: The choices below are all efficiency ratings for heat engines. Which is a Carnot engine?

A: Efficiency of any Carnot engine is always less than 1. η=1-T2T1<…

Q: 2. A heat engine has an efficiency of 52% when it runs with a hot-reservoir temperature of 400°C and…

Q: If a 35.9%-efficient Carnot heat engine (left figure) is run in reverse so as to form a refrigerator…

A: Given that the efficiency of heat engine is efficiency=35.9%= 35.9/100=0.359 Coefficient of…

Q: The coefficient of performance of the heat pump used as a cooler (illustrated below) is x-3. What is…

A: Given: The coefficient of performance is 3.

Q: 2. What is the maximum efficiency of a heat engine whose operating temperatures are 560°C and 345°C?…

A: Given data: 2. Operating temperatures: TH=5600C=560+273 K=833 K TC=3450C=345+273 K=618 K 3.…

Q: The Coefficient Of Performance (COP) of a heat pump (heating) process... Select one: O a. is lower…

A: The Coefficient of Performance (COP) of a refrigerator is given by

Q: 1. What is the principle type of drag experienced by a skydiver when their parachute has been…

A: According to our guideline we have to do the first questions only. Please upload other questions…

Q: A Carnot engine works between two heat reservoirs at temperatures Th= 322 K and Tc = 65 K. 1) (a)…

Q: As shown in the figure below, 5.50 moles of H, gas is contained in the left side of a container. The…

Q: Valve H2 Vacuum

A: Given: Number of moles in the H2 gas, n = 6.50 moles. Find: the rate of change of entropy,

Question

100%

Name
Chapter 24 Thermodynamics
Carnot Efficiency
A 25-kW heat engine operates between a 3200-K hot reservoir and a 450-K
cold reservoir. What is the engine's Carnot, or ideal, efficiency?
Read and Understand
What information are you given?
Power of engine = 25 kW
High-temperature reservoir, Thot = 3200 K
Class
Low-temperature reservoir, T
cold = 450 K
=
de
Plan and Solve
What unknown are you trying to calculate?
Carnot efficiency = ?
What formula contains the given quantity and the unknown?
Thot-Teold
Carnot efficiency:
Thot
Substitute the known values and solve.
Note that because the hot and cold reservoir temperatures are given in
kelvins, they can be directly substituted into the equation.
Carnot efficiency
Thot - Tcold
Thot
3200 K-450 K
3200 K
=
HOBS syna)
2900
= 0.86 or 86% ritottal onl oba
Ismen 180M
ghol sdt al d
Look back and check
olarit ni
Is your answer reasonable? ob lliw
Yes, a high efficiency is expected due to the large difference between the Ab
reservoir temperatures.
orii bsi
Math Practice
a separate sheet of paper, solve the following problems.
te grien Inily n
1. A heat engine has a hot-reservoir temperature of 1200°C. Its cold-
reservoir temperature is room temperature air. What is the Carnot
efficiency of the engine? (Note that room temperature air is about 25°C.)
2. A heat engine has an efficiency of 52% when it runs with a hot-reservoir
temperature of 400°C and cold-reservoir temperature of 50°C. What is
the efficiency if the hot-reservoir temperature is raised to 800°C?

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1: Introduce the formula of efficiency of carnot engine

VIEW

Step 2: Calculate the efficiency of carnot engine when hot reservoir is at 1200°C

VIEW

Step 3: Calculate the efficiency of carnot engine when hot reservoir is at 800°C

VIEW

Solution

VIEW

Step by step

Solved in 4 steps with 3 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.

Similar questions

Please solve this question,Only if you have knowledge in this concept. Do not post random solutions.
Study Guide Mix n Match: Heat is Energy moving from low temperature to high temperature. Energy moving from high temperature to low temperature. The same as temperature. The First Law of Thermodynamics defines The principle of entropy. The Law of heat addition. The conservation of heat. The greater the difference in temperature between the input reservoir and the output reservoir of a heat engine, the Greater the efficiency. Less the efficiency. Efficiency is not affected by temperature. A Carnot engine Can never be 100% efficient. Can sometimes be 100% efficient. Is always 100% efficient. When a water is going through a phase change from liquid to gas It gives up 540 cal/g of heat. It absorbs 540 cal/g of heat. It makes a 100oC temperature change. Displacement is a Scalar Quantity Vector Quantity MKS Quantity The acceleration at the peak of the rise of a projectile is Equal…
Suppose you spend 30.0 minutes on a stair-climbing machine, climbing at a rate of 75 steps per minute, with each step 8.00 inches high. If you weigh 150 lb and the machine reports that 700 kcal have been burned at the end of the workout, what efficiency is the machine using in obtaining this result? %If your actual efficiency is 0.17, how many kcal did you really burn? kcal
How does the ideal efficiency of an automobile relate to the temperature of the engine and the temperature of the environment in which it operates? Be specific.
Suppose you spend 30.0 minutes on a stair-climbing machine, climbing at a rate of 65 steps per minute, with each step 8.00 inches high. If you weigh 150 lb and the machine reports that 750 kcal have been burned at the end of the workout, what efficiency is the machine using in obtaining this result? %If your actual efficiency is 0.19, how many kcal did you really burn? kcal
A sophomore with nothing better to do adds heat to 0.480 kg of ice at 0.00° C until it is all melted. Part A What is the change in entropy of the water? Express your answer with the appropriate units. µA ? ASı Value Units Submit Request Answer Part B The source of heat is a very massive body at a temperature of 25.0° C. What is change entropy this body? Express your answer with the appropriate units. HÁ ? AS2 = Value Units %3D Submit Request Answer Part C What is the total change in entropy of the water and the heat source? Express your answer with the appropriate units.
Suppose a heat engine design makes a square on a PV diagram, using a monatomic gas. The high pressure is 3P and low pressure is P. The high volume is 3V and low volume is V. What is the efficiency of the heat engine?