Question

A Carnot engine whose low-temperature reservoir is at a temperature of -96.1 ∘C has an efficiency...

A Carnot engine whose low-temperature reservoir is at a temperature of -96.1 ∘C has an efficiency of 38.9 % . An engineer is assigned the problem of increasing this to 45.6 % .

Part A

By how many degrees must the temperature of the high-temperature reservoir be increased if the temperature of the low-temperature reservoir remains constant?

Part B

By how many degrees must the temperature of the low-temperature reservoir be decreased if that of the high-temperature reservoir remains constant?

Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Use the definition of efficiency of engine in terms of temperature of hot and cold reservoir to find the required solution as shown below

***********************************************************************************************
This concludes the answers. If there is any mistake or omission, let me know immediately and I will fix it....

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A Carnot engine whose low-temperature reservoir is at 12.3°C has an efficiency of 21.9%. By how...
A Carnot engine whose low-temperature reservoir is at 12.3°C has an efficiency of 21.9%. By how much should the Celsius temperature of the high-temperature reservoir be increased to increase the efficiency to 56.2%?
A Carnot engine whose low-temperature reservoir is at 15.7°C has an efficiency of 22.9%. By how...
A Carnot engine whose low-temperature reservoir is at 15.7°C has an efficiency of 22.9%. By how much should the Celsius temperature of the high-temperature reservoir be increased to increase the efficiency to 63.5%?
A Carnot engine whose low-temperature reservoir is at 14.9°C has an efficiency of 20.8%. By how...
A Carnot engine whose low-temperature reservoir is at 14.9°C has an efficiency of 20.8%. By how much should the Celsius temperature of the high-temperature reservoir be increased to increase the efficiency to 68.1%? (3 sig figs)
Problem 21.28 A Carnot engine whose hot-reservoir temperature is 420 ∘C has a thermal efficiency of...
Problem 21.28 A Carnot engine whose hot-reservoir temperature is 420 ∘C has a thermal efficiency of 40 % . Part A By how many degrees should the temperature of the cold reservoir be decreased to raise the engine's efficiency to 61 % ? Express your answer to two significant figures and include the appropriate units. ΔTcold =
With a high temperature reservoir at 450 K, a Carnot engine, has an efficiency of 33%....
With a high temperature reservoir at 450 K, a Carnot engine, has an efficiency of 33%. To increase the efficiency to 40%, the temperature of the low temperature reservoir needs to change by how much?
A Carnot engine operates with an efficiency of 30%. The temperature of the cold reservoir remains...
A Carnot engine operates with an efficiency of 30%. The temperature of the cold reservoir remains at 10 degrees C A.) Calculate the temperature of the hot reservoir? B.) By how much does the temperature in the hot reservoir need to be raised so that the efficiency of the engine becomes 50%. Express your answer in degrees Celsius.
A Carnot engine operates with an efficiency of 23% when the temperature of its cold reservoir...
A Carnot engine operates with an efficiency of 23% when the temperature of its cold reservoir is 295 K. Assuming that the temperature of the hot reservoir remains the same, what must be the temperature of the cold reservoir in order to increase the efficiency to 41%? K
A Carnot engine has an efficiency of 35.4%. It operates between constant-temperature reservoirs differing in temperature...
A Carnot engine has an efficiency of 35.4%. It operates between constant-temperature reservoirs differing in temperature by 100 C°. In kelvins, what are (a)the temperature of the hot reservoir and (b) the temperature of the cold reservoir?
The exhaust temperature of a heat engine is 290 ∘C∘C . What must be the high...
The exhaust temperature of a heat engine is 290 ∘C∘C . What must be the high temperature if the Carnot efficiency is to be 23 %% ? Express your answer using two significant figures. A heat engine uses a heat source at 500 ∘C∘C and has an ideal (Carnot) efficiency of 28 %% . To increase the ideal efficiency to 42 %% , what must be the temperature of the heat source? An ideal Carnot engine is operated between a...
The hot and cold reservoirs of a Carnot engine are 273°C and 71.7°C respectively. The temperature...
The hot and cold reservoirs of a Carnot engine are 273°C and 71.7°C respectively. The temperature of the hot reservoir is raised by 43°C in order to increase the efficiency of the engine. (a) What is the efficiency after the increase in temperature? .41 Incorrect: Your answer is incorrect. % (b) Instead of raising the temperature of the hot reservoir, if the temperature of the cold reservoir is decreased by 43°C, what would be the efficiency of the engine? %
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT