Question

What is the efficiency of an engine operating at a high temperature of 500 K and...

What is the efficiency of an engine operating at a high temperature of 500 K and a low temperature of 300 K. What would the low temperature have to be to produce an efficiency of 40 %?

Science   Chemistry   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

effeciency = 1- TL/TH
                        = 1- (300/500)
                        = 1- 0.6
                        = 0.4
Answer: 0.4 or 40 %

Low temperature of 300 K produces 30% effeciency as seen above

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
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?
In an experiment a Carnot engine is constructed with efficiency of 40%. The high temperature corresponding...
In an experiment a Carnot engine is constructed with efficiency of 40%. The high temperature corresponding to this efficiency is 600K. Next consider a second experiment with another Carnot engine with efficiency of 75%, at the same the low temperature as the first experiment. What is the high temperature of the second experiment? (a) 800 K (b) 1440 K (c) 4000 K (d) 7500 K
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...
An engine has a hot reservoir temperature of 959 K and a cold reservoir temperature of...
An engine has a hot reservoir temperature of 959 K and a cold reservoir temperature of 600 K. The engine operates at four-fifths maximum efficiency. What is the efficiency of the engine?
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)
A Carnot heat engine receives 15 kW of heat at 1200 K and rejects heat at...
A Carnot heat engine receives 15 kW of heat at 1200 K and rejects heat at 300 K.   The power produced from the engine is used to drive a reversed Carnot cycle, acting as a refrigerator, where the low temperature is 260 K and the high temperature is 300 K. What is the cooling effect, the amount of heat removed at 260 K, and what is the COPc ? Ans:  6.5     73.125 kW
Consider a heat engine operating between Earth's surface, at a typical temperature of 295 K, and...
Consider a heat engine operating between Earth's surface, at a typical temperature of 295 K, and the bottom of a geothermal well 1.0 km deep. Given a geothermal gradient of 25 degrees C/km, what would be the maximum possible efficiency of such a heat engine?With your answer to the previous question, if we could tap the geothermal flow over 10 percent of the earth's land area (excluding the oceans) with such heat engines, roughly what percentage of humankind's 16 TW...
A heat engine draws in 6720 J of heat and expels 3150 J of work. a)...
A heat engine draws in 6720 J of heat and expels 3150 J of work. a) Find the heat expelled from the heat engine. b) Calculate the efficiency of the heat engine. c) If this heat engine was a Carnot device with a low temperature of 318 K, what would be the high temperature?
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT