Contemporary Engineering Economics (6th Edition)
6th Edition
ISBN: 9780134105598
Author: Chan S. Park
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Question
Chapter 6, Problem 41P
(a)
To determine
Calculate the savings per KWh.
(b)
To determine
Calculate the breakeven hours.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
An integrated, combined cycle power plant produces 285 MW of electricity by gasifying coal. The capital investment for
the plant is $450 million, spread evenly over two years. The operating life of the plant is expected to be 18
years. Additionally, the plant will operate at full capacity 76% of the time (downtime is 24% of any given year). The
MARR is 10% per year.
a. If this plant will make a profit of two cents per kilowatt-hour of electricity sold to the power grid, what is the simple
payback period of the plant? Is it a low-risk venture?
b. What is the IRR for the plant? Is it profitable?
a. The simple payback period of the plant is years. (Round up to one decimal place.)
It's a
venture.
b. The IRR for the plant is%. (Round to one decimal place.)
The plant is
An integrated, combined cycle power plant produces 290 MW of electricity by gasifying coal. The capital
investment for the plant is $530 million, spread evenly over two years. The operating life of the plant is
expected to be 15 years. Additionally, the plant will operate at full capacity 74% of the time (downtime is 26% of
any given year). The MARR is 5% per year.
a. If this plant will make a profit of three cents per kilowatt-hour of electricity sold to the power grid, what is the
simple payback period of the plant? Is it a low-risk venture?
b. What is the IRR for the plant? Is it profitable?
Question 4
Consider a proposal to enhance production of tortillas en a
taqueria.
The new machine is estimated to cost $30 million and will
incur an additional $1 million per year in maintenance costs.
The machine will produce annual savings of $6 million each
year.
The Minimum acceptable rate of return (MARR) is 11% per
year, and the study period is five years at which time the
machine will be obsolete (worthless).
What is the maximum (minimum) value of maintenance cost
that reverse your decision? Write 4 decimals
Chapter 6 Solutions
Contemporary Engineering Economics (6th Edition)
Ch. 6 - Prob. 1PCh. 6 - Prob. 2PCh. 6 - Prob. 3PCh. 6 - Prob. 4PCh. 6 - Prob. 5PCh. 6 - Prob. 6PCh. 6 - Consider the cash flows in Table P6.7 for the...Ch. 6 - Prob. 8PCh. 6 - Prob. 9PCh. 6 - The repeating cash flows for a certain project are...
Ch. 6 - Beginning next year, a foundation will support an...Ch. 6 - Prob. 12PCh. 6 - Prob. 13PCh. 6 - Prob. 14PCh. 6 - Prob. 15PCh. 6 - Prob. 16PCh. 6 - Prob. 17PCh. 6 - Prob. 18PCh. 6 - The Geo-Star Manufacturing Company is considering...Ch. 6 - Prob. 20PCh. 6 - Prob. 21PCh. 6 - Prob. 22PCh. 6 - Prob. 23PCh. 6 - Prob. 24PCh. 6 - Prob. 25PCh. 6 - Prob. 26PCh. 6 - Prob. 27PCh. 6 - Prob. 28PCh. 6 - Prob. 29PCh. 6 - Prob. 30PCh. 6 - Prob. 31PCh. 6 - Prob. 32PCh. 6 - Prob. 33PCh. 6 - Prob. 34PCh. 6 - Prob. 35PCh. 6 - Prob. 36PCh. 6 - Prob. 37PCh. 6 - Prob. 38PCh. 6 - Prob. 39PCh. 6 - Prob. 40PCh. 6 - Prob. 41PCh. 6 - Prob. 42PCh. 6 - Prob. 43PCh. 6 - Prob. 44PCh. 6 - Prob. 45PCh. 6 - Prob. 46PCh. 6 - Prob. 47PCh. 6 - Prob. 48PCh. 6 - Prob. 49PCh. 6 - Prob. 50PCh. 6 - Prob. 51PCh. 6 - Prob. 52PCh. 6 - Prob. 53PCh. 6 - Prob. 1STCh. 6 - Prob. 2STCh. 6 - Prob. 3STCh. 6 - Prob. 4ST
Knowledge Booster
Similar questions
- Note: Give me both a&b right solutions. I will give good rating. An intergated, combined cycle power plant produces 300 MW of electricity by gasifying coal. the captial investment for the plant is $630 million, spread evenly over two years. the operating life of the plant is expected to be 25 years. additionally the plant will operate at full capacity 76% of the time ( downtime is 24% of any given year ) the MARR is 9% per year a) if this plant will make a profit of two cents per kilowatt-hour of electricity sold to the power grid, what is the simple payback period of the plant ? is it a low-risk venture ? b) what is the IRR for the plant ? is it profitable ?arrow_forwardYou are about to buy a piece of equipment (machine Alpha) for a project. The initial cost is $500,000 and the annual maintenance costs is $15,000. Another company offers you a second option (Machine Beta) for which the annual maintenance cost is $20,000. What is the maximum price (the initial cost) you would be willing to pay for the second option? Both machines have the same useful life of 11 years and the difference between their performances is negligible. Assume an annual interest rate of 4%. $767,524 $667,197 $456,197 $567,524arrow_forwardUse Excelarrow_forward
- You are weighing the economics of installing a triple-glazed energy efficient window system in your building. The following life cycle costs and savings are provided. The study period is 25 years, and the discount rate is 10%. Is this an economically viable approach based on the Savings-to-Investment Ratio (SIR)? Triple- Glazed Energy Efficient Windows: Window Quantity takeoff: 10000 sf Initial Cost: $100/sf Annual Operating Costs: $2.5/sf Annual Energy Saving: $10/sfarrow_forward1zarrow_forwardBrawdy Plastics, Inc., produces plastic seat belt retainers for General Motors at their plant in Buffalo, New York. After final assembly and painting, the parts are placed on a conveyor belt that moves the parts past a final inspection station. How fast the parts move past the final inspection station depends upon the line speed of the conveyor belt (feet per minute). Although faster line speeds are desirable, management is concerned that increasing the line speed too much may not provide enough time for inspectors to identify which parts are actually defective. To test this theory, Brawdy Plastics conducted an experiment in which the same batch of parts, with a known number of defective parts, was inspected using a variety of line speeds. The following data were collected. Excel file: data14-05.xlsx Number of Line Defective Speed Parts Found 20 23 20 21 30 19 30 16 40 15 40 17 50 14 50 11 If required onterarrow_forward
- A 20 kW enclosed motor with a load factor of 70% and an efficiency of 87.5% will be replaced by a new 20 kW enclosed motor operating at the same load factor, but will now have a higher efficiency of 91%. How many kW of power savings will be obtained from this project?arrow_forwardA bridge is to be constructed now as part of a new road. Engineers have determined that traffic density on the new road will justify a two-lane road and a bridge at the present time. Because of uncerta. regarding future use of the road, the time at which an extra two lanes will be required is currently being studied. The two-lane bridge will cost $210,000 and the four-lane bridge, it built initially, will cost $400,000. The future cost of widering a two-lane bridge to four lanes will be an extra $210,000 plus $23,000 for year that widening is delayed The MARR used by the highway department is 15% per year. The following estimates have been made of the times at which the four-lane bridge will be required: 4 years Pessimistic estimate Most likely estimate 5 years 9 years Optimistic estimate In view of these estimates, what would you recommend? List some advantages and disadvantages of this method of preparing estimates Click the icon to view the interest and annuity table for discrete…arrow_forwardAn aircraft hangar requires a new high-efficiency HVAC system for environmental control and reducing heating and cooling expenses. The cost of the HVAC system is $5.0 million, and the annual savings are expected to be $400,000. The useful life of the HVAC system is 20 years, and its residual value is zero. a) What is the simple payback period? b) What is the internal rate of return? (Note: You can use the tables in the book or Excel to find the IRR, but in either case show work and/or cut & paste a spreadsheet. If using the tables an approximate answer will be acceptable)arrow_forward
- An airline is considering two types of engine systems for use in its planes. Each has the same life and the same maintenance and repair record. System A costs 5 million and uses 48,000 liters per 1,000 hours of operation at the average load encountered in passenger service. System B costs 10 million and uses 38,400 liters per 1,000 hours of operation at the same level. Both engine systems have 3-year lives before any major overhaul. Based on the initial investment, the systems have 10% salvage values. If jet fuel costs 108 a liter, and fuel consumption is expected to increase at the rate of 6% each year due to degrading engine efficiency, which engine system should the firm install? Assume 2,000 hours of operation per year, and a MARR of 10%.arrow_forwardCurrent Attempt in Progress Mandy is considering investing in an opportunity that would require an upfront cost of $ 520 but would pay $ 150 per year for each of the next 6 years. If Mandy chooses to invest in this opportunity, what would be the IRR? Click here to access the TVM Factor Table calculator. Carry all interim calculations to 5 decimal places and then round your final answer to 1 decimal place. The tolerance is ±0.5. Should Mandy invest in this opportunity if her personal MARR is 20%?arrow_forwardAn area can be irrigated by pumping water from a nearby river. Two competing installations are being considered. The MARR is 12% per year and electric power for the pumps costs $0.06 per kWh. Recall that 1 horsepower (hp) equals 0.746 kilowatts. (11.2, 11.3) a. At what level of operation (hours per year) would you be indifferent between the two pumping systems? If the pumping system is expected to operate 2,000 hours per year, which system should be recommended? b. Perform a sensitivity analysis on the efficiency of Pump A. Over what range of pumping efficiency is Pump A preferred to Pump B? Assume 2,000 hours of operation per year, and draw a graph to illustrate your answer.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Principles of Economics (12th Edition)EconomicsISBN:9780134078779Author:Karl E. Case, Ray C. Fair, Sharon E. OsterPublisher:PEARSONEngineering Economy (17th Edition)EconomicsISBN:9780134870069Author:William G. Sullivan, Elin M. Wicks, C. Patrick KoellingPublisher:PEARSON
- Principles of Economics (MindTap Course List)EconomicsISBN:9781305585126Author:N. Gregory MankiwPublisher:Cengage LearningManagerial Economics: A Problem Solving ApproachEconomicsISBN:9781337106665Author:Luke M. Froeb, Brian T. McCann, Michael R. Ward, Mike ShorPublisher:Cengage LearningManagerial Economics & Business Strategy (Mcgraw-...EconomicsISBN:9781259290619Author:Michael Baye, Jeff PrincePublisher:McGraw-Hill Education
Principles of Economics (12th Edition)
Economics
ISBN:9780134078779
Author:Karl E. Case, Ray C. Fair, Sharon E. Oster
Publisher:PEARSON
Engineering Economy (17th Edition)
Economics
ISBN:9780134870069
Author:William G. Sullivan, Elin M. Wicks, C. Patrick Koelling
Publisher:PEARSON
Principles of Economics (MindTap Course List)
Economics
ISBN:9781305585126
Author:N. Gregory Mankiw
Publisher:Cengage Learning
Managerial Economics: A Problem Solving Approach
Economics
ISBN:9781337106665
Author:Luke M. Froeb, Brian T. McCann, Michael R. Ward, Mike Shor
Publisher:Cengage Learning
Managerial Economics & Business Strategy (Mcgraw-...
Economics
ISBN:9781259290619
Author:Michael Baye, Jeff Prince
Publisher:McGraw-Hill Education