Consider two air-conditioning systems with the cash flow estimates as given below. Use AW analysis to determine the sensitivity of the economic decision to MARR values of 4%, 6%, and 8% per year. Air-Conditioning System 1 Air-Conditioning System 2 System First cost, $ AOC, $ per year Salvage value, $ New compressor and motor cost at midlife, $ Life, years The annual worth of air-conditioning system 1 when the MARR is 4% is $ The annual worth of air-conditioning system 2 when the MARR is 4% is $ The annual worth of air-conditioning system 1 when the MARR is 6% is $ The annual worth of air-conditioning system 2 when the MARR is 6% is $ The annual worth of air-conditioning system 1 when the MARR is 8% is $ The annual worth of air-conditioning system 2 when the MARR is 8% is $ When the MARR is 4% When the MARR is 6% 2 2 When the MARR is 8% 2 is selected. is selected. -11,000 -650 -100 is selected. -1,550 8 -15,000 -105 -300 -2,620 12

ENGR.ECONOMIC ANALYSIS
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Chapter1: Making Economics Decisions
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Consider two air-conditioning systems with the cash flow estimates as given below. Use AW analysis to
determine the sensitivity of the economic decision to MARR values of 4%, 6%, and 8% per year.
Air-Conditioning System 1
Air-Conditioning System 2
System
First cost, $
AOC, $ per year
Salvage value, $
New compressor and motor cost at
midlife, $
Life, years
The annual worth of air-conditioning system 1 when the MARR is 4% is $
The annual worth of air-conditioning system 2 when the MARR is 4% is $
The annual worth of air-conditioning system 1 when the MARR is 6% is $
The annual worth of air-conditioning system 2 when the MARR is 6% is $
The annual worth of air-conditioning system 1 when the MARR is 8% is $
The annual worth of air-conditioning system 2 when the MARR is 8% is $
is selected.
When the MARR is 4%
When the MARR is 6%
When the MARR is 8%
2
2
2
is selected.
-11,000
-650
-100
is selected.
-1,550
8
-15,000
-105
-300
-2,620
12
Transcribed Image Text:Consider two air-conditioning systems with the cash flow estimates as given below. Use AW analysis to determine the sensitivity of the economic decision to MARR values of 4%, 6%, and 8% per year. Air-Conditioning System 1 Air-Conditioning System 2 System First cost, $ AOC, $ per year Salvage value, $ New compressor and motor cost at midlife, $ Life, years The annual worth of air-conditioning system 1 when the MARR is 4% is $ The annual worth of air-conditioning system 2 when the MARR is 4% is $ The annual worth of air-conditioning system 1 when the MARR is 6% is $ The annual worth of air-conditioning system 2 when the MARR is 6% is $ The annual worth of air-conditioning system 1 when the MARR is 8% is $ The annual worth of air-conditioning system 2 when the MARR is 8% is $ is selected. When the MARR is 4% When the MARR is 6% When the MARR is 8% 2 2 2 is selected. -11,000 -650 -100 is selected. -1,550 8 -15,000 -105 -300 -2,620 12
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