ETL 1110-1-181
12 Jan 98
Table C6. SIR Comparison for 200 Ton Chillers
running at an EFLH of 3000.
(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
,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
0.03
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
0.04
0.70
,800
-
-
-
,400
-
0.65
,600
||content||
,200
,708
1.67
,692
7.85
0.62
,880
0
,425
3.19
,567
4.10
0.60
,400
0
,283
8.96
,584
1.46
0.58
,920
0
,283
10.42
,301
1.26
0.05
0.70
,000
-
-
-
,400
-
0.65
,500
||content||
,500
,635
1.33
,765
9.82
0.62
,600
0
,781
2.56
,284
5.12
0.60
,000
0
,854
7.17
,730
1.83
0.58
,400
0
,854
8.33
,876
1.57
0.06
0.70
,200
-
-
-
,400
-
0.65
,400
||content||
,800
,562
1.11
,838
11.78
0.62
,320
||content||
,080
,137
2.13
,001
6.15
0.60
,600
0
,425
5.97
,876
2.19
0.58
,880
0
,425
6.94
,451
1.88
0.07
0.70
,400
-
-
-
,400
-
0.65
,300
,100
,489
0.95
,911
13.74
0.62
,040
||content||
,260
,493
1.83
,718
7.17
0.60
,200
0
,996
5.12
,022
2.56
0.58
,360
0
,996
5.95
,026
2.20
0.08
0.70
,600
-
-
-
,400
-
0.65
,200
,400
,416
0.83
,984
15.71
0.62
,760
||content||
,440
,850
1.60
,434
8.20
0.60
,800
0
,566
4.48
,168
2.92
0.58
,840
0
,566
5.21
2
2.51
0.09
0.70
,800
-
-
-
,400
-
0.65
,100
,700
,343
0.74
,057
17.67
0.62
,480
||content||
,620
,206
1.42
,151
9.22
0.60
,400
||content||
,080
,137
3.98
4
3.29
0.58
,320
||content||
,080
,137
4.63
(,823)
2.83
C-8
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