Question

A flywheel energy storage plant has a storage capacity of 20 MWh. For how many hours...

A flywheel energy storage plant has a storage capacity of 20 MWh. For how many hours could it power a town of 5000 houses, if each house consumes energy at a rate of about 1kW?

(a) 1 hour (b) 2 hours (c) 4 hours (d) 30 minutes

Engineering   Electrical-Engineering   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

PLEASE SHARE YOUR FEEDBACK AND LET ME KNOW IF YOU NEED ANY FURTHER EXPLANATION.

SOLUTION: OPTION (C)

GIVEN, TOTAL CAPACITY = 20 MWh

NO. OF HOUSE IN TOWN = 5000

CONSUMPTION PER HOUSE = 1kW

THEREFORE, TOTAL CONSUMPTION = NO. OF HOUSE IN TOWN * CONSUMPTION PER HOUSE = 5000 * 1 kW = 5000 kW

                                                            = 5 MW

TOTAL HOURS OF SUPPLY PROVIDED = TOTAL CAPACITY / TOTAL CONSUMPTION = 20 MWh / 5 MW = 4 hour,

THEREFORE, flywheel energy storage plant CAN POWER THE TOWN FOR 4 HOURS WITH 20 MWh STORAGE CAPACITY.

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 CSP plant with 4 hours of thermal storage needs to be designed. The capacity of...
A CSP plant with 4 hours of thermal storage needs to be designed. The capacity of the plant is 50 MWe. The efficiency of “solar to electric” is 0.08. a) What is the thermal energy required for this plant without storage? b) Assuming the power plant operates for 8 hours during the day on solar, 4 hours on thermal storage and remaining hours with fossil fuel backup, find the total energy needed to be supplied by solar. Assume 100% TES....
Consider a 1.4 MW power plant (this is the useful output in the form of electric...
Consider a 1.4 MW power plant (this is the useful output in the form of electric energy) that operates between 30∘C and 450∘C at 65% of the Carnot efficiency. This is enough electric energy for about 750 homes. One way to use energy more efficiently would be to use the 30∘C "waste" energy to heat the homes rather than releasing that heat energy into the environment. This is called cogeneration, and it is used in some parts of Europe but...
B. A regional electric utility currently relies on natural gas for power generation. It has 200...
B. A regional electric utility currently relies on natural gas for power generation. It has 200 Mw of natural gas capacity that is running on an average of 30 percent efficiency. It is studying options for supplying additional power to its customers. It has all of the following options: Coal:   A 50 megawatt (Mw) coal plant with a capital cost of $50 million and operating costs of $5 million per year plus the cost of coal. The coal plant would...
Consider a 1 MW power plant (this is the useful output in the form of electric...
Consider a 1 MW power plant (this is the useful output in the form of electric energy) that operates between 30∘C and 450∘C at 65% of the Carnot efficiency. This is enough electric energy for about 750 homes. One way to use energy more efficiently would be to use the 30∘C "waste" energy to heat the homes rather than releasing that heat energy into the environment. This is called cogeneration, and it is used in some parts of Europe but...
Many houses in the Washington area experience indoor air pollution by radon. A house of a...
Many houses in the Washington area experience indoor air pollution by radon. A house of a volume V = 300 m3 has air leaking in from the soil with a radon concentration of 5000 pCi/L and rate of 20 L/h. During the winter time, the average rate of fresh radon-free air entering the house is only 400 L/h. Radon undergoes decay following a first order reaction with a rate constant k = 0.18/day. The house can be approximated as a...
A local coal fired 200 megawatt electrical generating plant has a thermal efficiency of 30% and...
A local coal fired 200 megawatt electrical generating plant has a thermal efficiency of 30% and a nuclear 150 megawatt electrical generating plant has a thermal efficiency of 25%. a. Calculate the waste heat emitted by each (in megawatts) b. If the cooling water used for the nuclear plant were required to only rise in temperature by 2o C after it absorbs the waste heat, how much water per hour would be required to cool the nuclear plant (in cubic...
You are investigating the feasibility of installing a solar system at your house. You are thinking...
You are investigating the feasibility of installing a solar system at your house. You are thinking of installing 20 panels. Each panel has a capacity of 248.1 W. The current average cost for panels, including installation, is around $4.50/W. The solar cells are expected to operate at around 13% capacity. You will get a federal tax rebate worth 30% of the installation cost. You will also get a rebate from the state of New Jersey. Obviously, installing the system would...
this is a thermodynamics course We want to model energy and mass balance issues involved in...
this is a thermodynamics course We want to model energy and mass balance issues involved in strenuous exercise, for example the running of a marathon. Suppose a 70 kg marathon runner runs at an ≈8 minute/mile pace, completing the 26.2 mile race distance in 210 minutes, or 3.5 hours. a.) Physiological measurements indicate that the total power consumed by an average weight runner (70 kg) at a pace of 8 minutes/mile is about 900 kcal/hour. What is the total energy...
Utease Corporation has many production plants across the midwestern United States. A newly opened plant, the...
Utease Corporation has many production plants across the midwestern United States. A newly opened plant, the Bellingham plant, produces and sells one product. The plant is treated, for responsibility accounting purposes, as a profit center. The unit standard costs for a production unit, with overhead applied based on direct labor hours, are as follows. Manufacturing costs (per unit based on expected activity of 23,000 units or 57,500 direct labor hours): Direct materials (3.0 pounds at $20) $ 60.00 Direct labor...
1. Yol's Brewery must decide how many barrels of the two types of beer (Yol's White...
1. Yol's Brewery must decide how many barrels of the two types of beer (Yol's White and Yol's Red) to produce for its next shipment. It has limited supply of ingredients that are used in both products. Each barrel of Yol's White requires 20 lbs. of corn, 2 ozs. of hops, 10 lbs. of malt and yields €20 of profit. . Each barrel of Yol's Red requires 1 ozs. of hops, 30 lbs. of malt and yields €30 of profit....
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT