ETL 1110-1-181
12 Jan 98
F i g u r e C 2 . O p t i m u m I P L V s for a
200 Ton Centrifugal Chiller
(Ex a m p l e 2 )
0.54
1000 EFLH
2000 EFLH
0.56
3000 EFLH
4000 EFLH
0.58
0.6
0.62
0.64
0.66
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
Ene r g y C o s t s ( $ / k W h )
T a b l e C 8 . S u m m a tion of Optim u m I P L V *
E n e r g y C o s t s ( $ / k W h)
EFLH
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
1000 EFLH
0.58
0.58
0.58
0.58
0.58
0.58
0.58
0.58
2000 EFLH
0.58
0.58
0.58
0.58
0.58
0.58
0.58
0.58
3000 EFLH
0.58
0.58
0.58
0.58
0.58
0.58
0.58
0.58
4000 EFLH
0.58
0.58
0.58
0.58
0.58
0.58
0.58
0.58
* T h e o p t i m u m IP L V i s e s t a b l i s h e d w h e n t h e S I R v a l u e s c a l c u l a t e d i n T a b l e s C 1 0 , C 1 1 ,
C12 and C13 approach 1.00. SIR values which are below 1.00 are not viewed as
c o s t e ffe c t i ve . T a b l e C 9 p r o v i d e s a s u m m a r y o f t h e e n e r g y u s a g e c a l c u l a t i o n s .
C a l c u l a t i o n C o n sta n ts:
Chiller Capacity
=
200
tons
Economic Life
=
20
years
Discount Factor
=
13.09
Monthly Demand Charge
=
.00
per kw
Demand Charge No. of Months
=
12
months
Non-Energy Savings Annual Recurring (+/-)
=
0
Non-Recurring Savings (+/-)
=
0
C-10
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