Chiller Power Consumption Estimation Using IPLV
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Chiller Power Consumption Estimation Using IPLV
The IPLV (Integrated Part Load Value) was developed by the Air-Conditioning, Heating and Refrigeration Institute (AHRI) to estimate the performance characteristic of chillers.
IPLV = 0.01A+0.42B+0.45C+0.12D
Where:
A = EER or COP at 100% chiller capacity
B = EER or COP at 75% chiller capacity
C = EER or COP at 50% chiller capacity
D = EER or COP at 25% chiller capacity
In other words; the chiller is estimated to be operating 1% at maximum capacity, 42% at 75% capacity, 45% at 50% capacity and 12% at 25% capacity. Using these information we may be able to rough estimate the annual electrical usage and cost. Use the calculator below to estimate how consumption and cost change with the chiller performance characteristic. You may also very easily calculate the simple ROI for a more efficient chiller.
You may very easily calculate the simple ROI for a more efficient chiller using the calculator below and your energy cost.
