MARR PW

10% $ 389,473.51
25% $ 252,891.14
50% $ 150,635.57

PW vs MARR
$450,000.00
$400,000.00
 PW vs MARR
$450,000.00
$400,000.00
$350,000.00
$300,000.00
$250,000.00
$200,000.00
$150,000.00
$100,000.00
$50,000.00
$-
5% 10% 15% 20% 25% 30% 35% 40% 45% 50% 55%
Number of years
Operation and Maintainance Cost / year
0
1 -80,000
2 -80,000
3 -80,000
4 -80,000
5 -80,000
6 -80,000
7 -80,000

Number of years
Operation and Maintainance Cost / year
0
1 -80,000
2 -80,000
3 -80,000
4 -80,000
5 -80,000
6 -80,000
7 -80,000

Number of years
Operation and Maintainance Cost / year
0
1 -80,000
 2 -80,000
3 -80,000
4 -80,000
5 -80,000
6 -80,000
7 -80,000

Number of years
Operation and Maintainance Cost / year
0
1 -80,000
2 -80,000
3 -80,000
4 -80,000
5 -80,000
6 -80,000
7 -80,000
Present Worth(MARR @ 10%)
Future Worth (MARR @ 10%) Number of years
0
1
2
3
-389473.505415435 -758973.68
4
5
6
7

Number of years
0
Present Worth(MARR @ 25%)
Future Worth (MARR @ 25%) 1
2
3
4
5
-252891.136 -1205878.90625
6
7

Number of years
0
1
2
3
4
5
6
7

Presebt Worth(MARR @ 50%)

Future Worth (MARR @ 50%)

-150635.57384545 -2573750
 -150635.57384545 -2573750

Present Worth(MARR @ 10%)

Future Worth (MARR @ 10%)

-389473.505415435 -758973.68
Operation and Maintainance
Old boiler
Cost/Salvage
year
New Boiler
New Boiler
BuyingSalvage (after
Net Cash
useful
Present
Flow/
life)Worth(MARR
year Future@
Worth
10%)(MARR @ 10%)
20,000 -150,000 -130,000
-25,000 -25,000
-25,000 -25,000
-30,000 -30,000
-287998.7034 -307894.775
-36,000 -36,000
-43,200 -43,200
-51,840 -51,840
-62,208 40,000 -22,208

Operation and Maintainance

Old boiler
Cost/Salvage
year
New Boiler
New Boiler
BuyingSalvage (after
Net Cash
useful
Present
Flow/
life)Worth(MARR
year Future@
Worth
25%)(MARR @ 25%)
20,000 -150,000 -130,000
-25,000 -25,000 MARR
-25,000 -25,000 10%
-30,000 -30,000 25%
-228508.2761 -469724.06445
-36,000 -36,000 50%
-43,200 -43,200
-51,840 -51,840
-62,208 40,000 -22,208

Operation and Maintainance

Old boiler
Cost/Salvage
year
New Boiler
New Boiler
BuyingSalvage (after
Net Cash
useful
Present
Flow/
life)Worth(MARR
year Future@
Worth
50%)(MARR @ 50%)
20,000 -150,000 -130,000
-25,000 -25,000
-25,000 -25,000
-30,000 -30,000 MARR
-185317.5601 -945152.375
-36,000 -36,000 10%
-43,200 -43,200 25%
-51,840 -51,840 50%
-62,208 40,000 -22,208
PW
PW vs MARR
287998.7034 350000

228508.2761 300000
185317.5601 250000
Present Worth

200000

150000

100000

50000

0
5% 10% 15% 20% 25% 30% 35% 40% 45% 50% 55%
MARR

PW
$ 389,473.51
$ 252,891.14
$ 185,317.56