ETL 1110-1-181
12 Jan 98
Table C4. SIR Comparison for 200 Ton Chillers
running at an EFLH of 1000.
(Example 1)
Energy Costs
Energy Costs Incremental
Discounted
Simple
Net Present
($/kW-h)
IPLV
($/yr)
Savings ($/yr)
Savings
Payback (yrs) Value (NPV)
SIR
0.02
0.70
,800
-
-
-
,400
-
0.65
,600
0
,618
10.00
,782
1.31
0.62
,480
0
||content||
,571
19.17
,511
0.68
0.60
,400
||content||
,047
53.75
,764
0.24
0.58
,320
||content||
,047
62.50
,717
0.21
0.03
0.70
,200
-
-
-
,400
-
0.65
,900
0
,927
6.67
,473
1.96
0.62
,720
0
,356
12.78
,417
1.02
0.60
,600
0
||content||
,571
35.83
,146
0.37
0.58
,480
0
||content||
,571
41.67
,575
0.31
0.04
0.70
,600
-
-
-
,400
-
0.65
,200
0
,236
5.00
,164
2.62
0.62
,960
0
,142
9.58
,322
1.37
0.60
,800
0
,094
26.88
,528
0.49
0.58
,640
0
,094
31.25
,434
0.42
0.05
0.70
,000
-
-
-
,400
-
0.65
,500
0
,545
4.00
,855
3.27
0.62
,200
0
,927
7.67
,228
1.71
0.60
,000
0
,618
21.50
,910
0.61
0.58
,800
0
,618
25.00
,292
0.52
0.06
0.70
,400
-
-
-
,400
-
0.65
,800
0
,854
3.33
,546
3.93
0.62
,440
0
,712
6.39
,134
2.05
0.60
,200
0
,142
17.92
,292
0.73
0.58
,960
0
,142
20.83
,150
0.63
0.07
0.70
,800
-
-
-
,400
-
0.65
,100
0
,163
2.86
,237
4.58
0.62
,680
0
,498
5.48
,039
2.39
0.60
,400
0
,665
15.36
,674
0.85
0.58
,120
0
,665
17.86
,009
0.73
0.08
0.70
,200
-
-
-
,400
-
0.65
,400
0
,472
2.50
,928
5.24
0.62
,920
0
,283
4.79
,945
2.73
0.60
,600
0
,189
13.44
,056
0.97
0.58
,280
0
,189
15.62
,867
0.84
0.09
0.70
,600
-
-
-
,400
-
0.65
,700
0
,781
2.22
,619
5.89
0.62
,160
0
,069
4.26
,850
3.07
0.60
,800
0
,712
11.94
,438
1.10
0.58
,440
0
,712
13.89
,726
0.94
C-6
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