Tons
 
Load Point (%) Efficiency

Base Chillers

Two Parallel Chillers

Alternate Chillers

Two Parallel Chillers
Annual Operating Hours
Annual Operating Hours
Design Load % Annual Operating Hours
100%
90%
80%
70%
60%
50%
40%
30%
20%
10%
  0
 
 
 
 
 
 
 
 
 
 
 
 
 
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Design
Load %
 
 
100%
90%
80%
70%
60%
50%
40%
30%
20%
10%
Chiller
Comparison
Base Chiller Alternate Chiller
Chiller 1 Chiller 2 Totals Chiller 1 Chiller 2 Totals
               
               
               
               
               
               
               
               
               
               
(kW/Ton) kWHr $ Energy Cost (kW/Ton) kWHr $ Energy Cost

Savings

Payback

with Rebate yrs without Rebate yrs

Annual Energy Use (kWhr)

Annual Operating Costs