ZuoTi.Pro
Question

Converting sunlight to electricity with solar cells has an efficiency of 15%. It's possible to achieve a higher efficien...

Converting sunlight to electricity with solar cells has an efficiency of 15%. It's possible to achieve a higher efficiency (though currently at higher cost) by using concentrated sunlight as the hot reservoir of a heat engine. Each dish in the figure concentrates sunlight on one side of a heat engine, producing a hot-reservoir temperature of 510 degrees C. The cold reservoir, ambient air, is approximately 28 degrees C. The actual working efficiency of this device is 30%.
What is the theoretical maximum efficiency?
science   physics   
1 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

uploaded image

1 0
Add a comment
Answer #2

formula for efficiency is

e = 1- T2/T1

T1 =500 +273 = 773 K

T2 = 30+273 K = 303 K

e= 1- 303 K/773 K

=0.608

=60.8 %

0 0
Add a comment
Know the answer?
Add Answer to:
Converting sunlight to electricity with solar cells has an efficiency of 15%. It's possible to achieve a higher efficien...
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. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • Review I Constants I Periodic Table Converting sunlight to electricity with solar cells has an efficiency...

    Review I Constants I Periodic Table Converting sunlight to electricity with solar cells has an efficiency of 15%. It's possible to achieve a higher efficiency (though currently at higher cost) by using concentrated sunlight as the hot reservoir of a heat engine. Each dish in (Figure 1) concentrates sunlight on one side of a heat engine, producing a hot-reservoir temperature of 600 °C. The cold reservoir, ambient air, is approximately 30 °C. The actual working efficiency of this device is...

  • ReviewI ConstantsI Periodic Table Part A Converting sunlight to electricity with solar cells has an efficiency...

    ReviewI ConstantsI Periodic Table Part A Converting sunlight to electricity with solar cells has an efficiency of 15%. It's possible to achieve a higher efficiency (though currently at higher cost) by using concentrated sunlight as the hot reservoir of a heat engine. Each dish in the figure concentrates sunlight on one side of a heat engine, producing a hot-reservoir temperature of 530 °C. The cold reservoir, ambient air, is approximately 28 °C. The actual working efficiency of this device is...

  • Problem 11.30 < 7 of 1 M Review Cond Part A Converting sunlight to electricity with...

    Problem 11.30 < 7 of 1 M Review Cond Part A Converting sunlight to electricity with solar cells has an efficiency of 15% It's possible to achieve a higher efficiency (though currently at higher cost) by using concentrated sunlight as the hot reservoir of a heat engine. Each dish in the figure concentrates sunlight on one side of a heat engine, producing a hot-reservoir temperature of 600 °C. The cold reservoir, ambiental is approximately 24°C. The actual working efficiency of...

  • A newly proposed device for generating electricity from the sun is a heat engine in which the hot reservoir is created b...

    A newly proposed device for generating electricity from the sun is a heat engine in which the hot reservoir is created by focusing sunlight on a small spot on one side of the engine. The cold reservoir is ambient air at 20 degrees C. The designer claims that the efficiency will be 35%. What minimum hot-reservoir temperature, in degrees C, would be required to produce this efficiency?

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT