ZuoTi.Pro
Question

You convert the heat from burning coal to electricity with an efficiency of 30%, then lose...

You convert the heat from burning coal to electricity with an efficiency of 30%, then lose 2% in upping the voltage at the plant, then lose 2% downing the voltage for home use, then convert that electricity into light with an efficiency of 20%. What is the overall efficiency for converting coal to light?

science   physics   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

0 0
Add a comment
Know the answer?
Add Answer to:
You convert the heat from burning coal to electricity with an efficiency of 30%, then lose...
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

  • Use a calculation to estimate the mass of coal that must be burned to charge a...

    Use a calculation to estimate the mass of coal that must be burned to charge a 3.7 V 1500mAh iPhone battery assuming the electricity is generated from a coal-fired power plant, assuming the efficiency of the power plant converting heat to electricity is 0.4, the efficiency of electrical transmission from the plant to your home is 0.5, the efficiency of the phone charger at converting AC back to DC to charge your iPhone is 0.6, and assuming coal is 100%...

  • A typical large coal fired electric power plant produces 1,200MW of electricity by burning fuel with...

    A typical large coal fired electric power plant produces 1,200MW of electricity by burning fuel with energy content of 3,000 MW. Three hundred and forty (340) MW are lost as heat up the smokestack leaving the rest to drive a generator to produce electricity. However, the thermal efficiency of the turbine is only 45%. That is 45% of the remaining power goes to drive the generator, and 55% is waste heat that must be removed by cooling water. Assume that...

  • 2- What is the efficiency of a typical coal-fired power plant? That is, what percentage of...

    2- What is the efficiency of a typical coal-fired power plant? That is, what percentage of the thermal energy from burning the coal is successfully turned into electricity?

  • At a coal-burning power plant a steam turbine is operated with a power output of 558...

    At a coal-burning power plant a steam turbine is operated with a power output of 558 MW . The thermal efficiency of the power plant is 39 % . You may want to review A)At what rate is heat discarded to the environment by this power plant? B) At what rate must heat be supplied to the power plant by burning coal?

  • 4. A coal-fired power plant has thermal efficiency, η = 30%. It produces 100 MW of...

    4. A coal-fired power plant has thermal efficiency, η = 30%. It produces 100 MW of power. does the coal combustor transfer energy (heat) to the plant? Answer: 100 MW At what 0 < 400 MH At what rate is heat rejected to the environment? Answer: 100 MW < Qく400 Mw. a. rate b.

  • --->Found that 2.64(10^6) kg of coal was consumed. Day 19 and 20 Homework: Heat engines, refrigerators,...

    --->Found that 2.64(10^6) kg of coal was consumed. Day 19 and 20 Homework: Heat engines, refrigerators, and heat pum... Saved 4. Required information Part 2 of 2 NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part A coal-burning steam power plant produces a net power of 300 MW with an overall thermal efficiency of 35 percent. The actual gravimetric air-fuel ratio in the furnace is calculated to be 12...

  • Table 1 shows the demand schedule for electricity from a coal burning utility. Table 2 shows...

    Table 1 shows the demand schedule for electricity from a coal burning utility. Table 2 shows the​ utility's cost of producing electricity and the external cost of the pollution created.    If the government levies a pollution tax such that the utility generates the efficient quantity of​ electricity, calculate the quantity of electricity​ generated, the price of​ electricity, the size of the pollution​ tax, and the tax revenue. The quantity of electricity generated is nothing kilowatts a day and the price...

  • Burning 20 tons of coal provides about 5. 1011 J, which is approximately the annual energy...

    Burning 20 tons of coal provides about 5. 1011 J, which is approximately the annual energy requirement of an average person in the United States. If this amount of energy was provided by the electricity generated by the fission of uranium-235 in a nuclear reactor, instead, what mass of natural uranium would be required? About 0.7% of natural uranium is uranium-235 (almost all the rest is uranium-238, which does not fission like U-235 does). Assume that the fission of each...

  • A typical coal-fired power plant generates 1000 MW of usable power at an overall thermal efficiency...

    A typical coal-fired power plant generates 1000 MW of usable power at an overall thermal efficiency of 37%. Part A What is the rate of heat input to the plant? Part B The plant burns anthracite coal, which has a heat of combustion of  2.65×107J/kg. How much coal does the plant use per day, if it operates continuously? Part C At what rate is heat ejected into the cool reservoir, which is the nearby river? Part D The river's temperature is...

  • An industry is proposing to construct a new coal-fired power plant that produces 2300 MW electricity...

    An industry is proposing to construct a new coal-fired power plant that produces 2300 MW electricity with efficiency of 39%. Coal has a heating value of 10,750 Btu/lb, and contains a sulfur content of 2.4%. It is expected that 95% of sulfur will be converted to SO2. The New Source Performance Standards (NSPS) limits the SO2 emission rate from any coal-fired power plants to 1.2 lb/ 106 Btu heat input. a) Determine coal consumption in lb/ hr b) Determine SO2...

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