The IPLV (Integrated Part Load Value) is the most representative index of a chiller's real efficiency, as it considers that equipment rarely operates at full load.
Why is IPLV Important?
- Studies show that chillers operate on average:
- 1% of the time at 100% load
- 42% of the time at 75% load
- 45% of the time at 50% load
- 12% of the time at 25% load
IPLV Formula
IPLV = 0.01A + 0.42B + 0.45C + 0.12D
- Where:
- A = Efficiency at 100% load
- B = Efficiency at 75% load
- C = Efficiency at 50% load
- D = Efficiency at 25% load