A retrofitted space-heating system is being considered for a small office building. The system can be purchased and installed for $72,000, and it will save an estimated 210,000 kilowatt-hours (kWh) of electric power each year over a six-year period. A kilowatt-hour of electricit costs $0.14, and the company uses a MARR of 12% per year in its economic evaluations of refurbished systems. The market value of the system will be $14,400 at the end of six years, and additional operating and maintenance expenses are $7,900 per year. Use the benefit-cost method to make a recommendation. Click the icon to view the interest and annuity table for discrete compounding when the MARR is 12% per year. The conventional B-C ratio of the system is (Round to two decimal places.) This B-C ratio indicates that the project is acceptable not acceptable

A retrofitted space-heating system is being considered for a small office building. The system can be purchased and installed for $72,000, and it will save an estimated 210,000 kilowatt-hours (kWh) of electric power each year over a six-year period. A kilowatt-hour of electricit costs $0.14, and the company uses a MARR of 12% per year in its economic evaluations of refurbished systems. The market value of the system will be $14,400 at the end of six years, and additional operating and maintenance expenses are $7,900 per year. Use the benefit-cost method to make a recommendation. Click the icon to view the interest and annuity table for discrete compounding when the MARR is 12% per year. The conventional B-C ratio of the system is (Round to two decimal places.) This B-C ratio indicates that the project is acceptable not acceptable

ENGR.ECONOMIC ANALYSIS

14th Edition

ISBN:9780190931919

Author:NEWNAN

Publisher:NEWNAN

Chapter1: Making Economics Decisions

Section: Chapter Questions

Problem 1QTC

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Nowadays it is very important to reduce one's carbon "footprint" (how much carbon we produce in our daily lifestyles). Minimizing the use of fossil fuels and instead resorting to renewable sources of energy (e.g., solar energy) are vital to a "sustainable" lifestyle and a lower carbon footprint. Let's consider solar panels that prewarm the water fed to a conventional home water heater. The solar panels have an installed cost of $2,500, and they reduce the homeowner's energy bill by $426 per year. The residual value of the solar panels is $550 at the end of their 9-year life. What is the annual IRR of this investment? Use the trial-and-error method starting with an initial guess of 13%. (a) The annual IRR of this investment is 10.72%. (Round to two decimal places.) (b) If the homeowner's MARR is 10%, is the investment economical? O A. No B. Yes
Two traffic signal systems are being considered for an intersection. One system costs $31,000 for installation and has an efficiency rating of 80%, requires 26 kW power (output), incurs a user cost of $0.23 per vehicle, and has a life of 9 years. A second system costs $47,000 to install, has an efficiency rating of 87%, requires 34 kW power (output), has a user cost of $0.19 per vehicle, and has a life of 17 years. Annual maintenance costs are $75 and $95, respectively. MARR = 8% per year. How many vehicles must use the intersection to justify the second system when electricity costs $0.09/kWh? Assume salvage value for each system equals zero. Project the difference in the user cost as savings for the second system. There are approximately 8,760 hours/year. Click the icon to view the interest and annuity table for discrete compounding when the MARR is 8% per year. At least 108000 vehicles per day must use the intersection to justify the second system. (Round up to the nearest whole…
Waller County is planning to construct a Dam some tens of miles away from the Hempstead Recreation center to facilitate fishing in the El Manny River Basin and Power Generation. The first cost for the Dam will amount to $6,500,000. Annual maintenance and repairs will amount to $24,000 for the first four years, to $28,000 for each year in the next eight years, and to $32,000 per year for the next four years. At the end of the 16th year, $25,000 is estimated to be deposited into Waller county account as tax credits earned for its environmental compliance in the construction and operation of the Dam. In addition a major overhaul costing $650,000 will be required at the end of the seventh year. Use an interest rate of 10% and : a) Determine the engineering economy symbols and their value for each option. b) Construct the cash flow diagram c) Calculate the Capital Recovery for the project
A retrofitted space-heating system is being considered for a small office building. The system can be purchased and installed for $95,000, and it will save an estimated 150,000 kilowatt-hours (kWh) of electric power each year over a seven-year period. A kilowatt-hour of electricity costs $0.12, and the company uses a MARR of 12% per year in its economic evaluations of refurbished systems. The market value of the system will be $19,000 at the end of seven years, and additional operating and maintenance expenses are $10,500 per year. Use the benefit-cost method to make a recommendation. Click the icon to view the interest and annuity table for discrete compounding when the MARR is 12per year. The conventional B-C ratio of the system is 1.48. (Round to two decimal places.) This B-C ratio indicates that the project is not acceptable.
A $45,000 investment in a new conveyor system is projected to improve throughput and increasing revenue by $14,000 per year for five years The conveyor will have an estimated market value of $4,000 at the end of five years. Using an MARR = 12% per year, what is the FW? $-19,329.40 $13,635.70 $16,998.90 none of the above W ?
A city is spending $19.3 million on a new sewage system. The expected life of the system is 40 years, and will have no market value at the end of its life. Operating and maintenance expenses for the system are projected to average $0.8 million per year. If the city's MARR is 7% per year, what is the capitalized worth of the system? The study period is 100 years.
The Civil Engineering department at RRCP plans to purchase a 3D printer for the CARSI lab. One option is the purchase of a brand new machine (purchase price $1900), and will have a salvage value of $700 after three years. A second option is the purchase of a refurbished machine (purchase price $1200), which will cost $250 per year to maintain, with a salvage value of $250 after three years. What is the interest rate that will make these two options equivalent with respect to Present Worth?
A $45,000 investment in a new conveyor system is projected to improve throughput and increasing revenue by $14,000 per year for five years The conveyor will have an estimated market value of $4,000 at the end of five years. Using an MARR = 12% per year, what is the FW? $-19,329.40 $13,635.70 $16,998.90 none of the above K ?
Your firm is thinking about investing $300,000 in the overhaul of a manufacturing cell in a lean environment. Revenues are expected to be $33,000 in year one and then increasing by $11,000 more each year thereafter. Relevant expenses will be $20,000 in year one and will increase by $10,000 per year until the end of the cell's seven-year life. Salvage recovery at the end of year seven is estimated to be $11,000. What is the annual equivalent worth of the manufacturing cell if the MARR is 8% per year? Click the icon to view the interest and annuity table for discrete compounding when the MARR is 8% per year. The annual equivalent worth of the manufacturing cell is $. (Round to the nearest dollar.)
An aerodynamic three-wheeled automobile (the Dart) runs on compressed natural gas stored in two cylinders in the rear of the vehicle. The $15,000 Dart can cruise at speeds up to 85 miles per hour, and it can travel 95 miles per gallon of fuel. Another two-seater automobile costs $11,000 and averages 45 miles per gallon of compressed natural gas. If fuel costs $8.00 per gallon and MARR is 12% per year, over what range of annual miles driven is the Dart more economical? Assume a useful life of six years for both cars. Click the icon to view the interest and annuity table for discrete compounding when the MARR is 12% per year. Dart is more economical if you are planning on driving miles or more per year. (Round to the nearest whole number.)
The maintenance of a machine in a manufacturing plant currently costs a company $8,000 every year (paid at the end of each year) with the cost increasing by $1,000 each subsequent year. Because of this, the plant manager is considering replacing this machine with a newer one which would cost $20,000 to purchase today, and then $4,000/year increasing by $30Ó in each year to maintain (also paid at the end of the year). If the company's MARR is at 8% per year compounded annually, what would be the discounted payback period (in years) for this proposed investment? 4 6. 7