Attached an Excel file for you to explain the process to calculate IPLV index.
Below is a description of the columns for your reference:
- Column A: Reference Ambient Temperatures used for the IPLV calculation.
- Column B: Descriptions of the SHARK part-load ratios as shown in the Parzialization tab. Just so you know, these part-load ratios are actually only indicative, not actual operating points. In other words, if you select 75% part-load in SHARK, the unit does not actually operate at 75% of its full capacity.
- Column C: For each ambient temperature and each SHARK part-load ratio, the unit capacities are calculated.
- Column E: For each ambient temperature and each SHARK part-load ratio, the absorbed powers are calculated.
- Column F: The COP is then calculated based on the capacity and absorbed power.
- Column D: The effective part-load capacity ratio. It is assumed that the unit operates at 100% load when the ambient temperature is 35°C and the SHARK part-load ratio is 100%. For other conditions, the percentage of capacity is calculated relative to this full-load point.
- Column G: For each desired part-load ratio at the various ambient conditions, a linear interpolation is applied to determine the corresponding COP value.
Finally, the IPLV is calculated according to the standard formula.