How do I calculate IPLV?

How do I calculate IPLV?

Integrated Part Load Value (IPLV) : Hence to calculate the exact performance value considering different loading conditions, IPLV is used. IPLV Formula = 0.01A+0.42B+0.45C+0.12D; where A,B,C&D are the COP values at 4 loading points respectively.

What are the units of IPLV?

ASHRAE Standard 90.1 (using ARI reference standards) uses the term IPLV to report seasonal cooling efficiency for both seasonal COPs (unit-less) and seasonal EERs (Btu/Wh), depending on the equipment capacity category; and most chillers manufacturers report seasonal efficiency for large chillers as IPLV using units of …

What is IPLV and NPLV?

IPLV stands for integrated part load value and NPLV standfor non standard part load efficiency. IPLV or NPLV is used to evaluate efficiency of chiller at different loading condition.

Is a higher IPLV better?

IPLV represents the cooling efficiency of a unit operating over its entire range of unloading. Unless the unit will operate at or near its full load value 100% of the time, a lower IPLV is more desirable for better overall performance.

What is IPLV value?

IPLV stands for Integrated Part Load Value, it’s a similar concept to SEER, where part-load performance is measured and rated so that customers can have a way to do an apples-to-apples comparison of real-world operating efficiency between various brands and models.

What is IPLV in refrigeration?

The Integrated Part Load Value (IPLV) is a performance characteristic developed by the Air-Conditioning, Heating and Refrigeration Institute (AHRI). It is most commonly used to describe the performance of a chiller capable of capacity modulation.

What is IPLV?

What does NPLV mean?


Acronym Definition
NPLV Nonstandard Part-Load Value (cooling towers)

What is a SEER?

First, the basics. SEER stands for Seasonal Energy Efficiency Ratio. This is the ratio of the cooling output of an air conditioner over a typical cooling season, divided by the energy it uses in Watt-Hours. Keep in mind that SEER ratio is a maximum efficiency rating, like the miles per gallon for your car.

How do you convert EER to police?

EER, or Energy Efficient Ratio, and COP, or Coefficient of Performance, are both used of geothermal heat pumps and other air conditioning equipment. To convert EER to COP, divide EER by 3.41. That is the formula we used when designing our EER to COP calculator.

What is COP value?

Coefficient of Performance The COP is determined by the ratio between energy usage of the compressor and the amount of useful cooling at the evaporator (for a refrigeration instalation) or useful heat extracted from the condensor (for a heat pump). A high COP value represents a high efficiency.

What is iplv and how is it calculated?

The IPLV is calculated on the weighted percentage of assumed operational hours at each operating condition. So there are four operating points that are going to be measured. This is an average efficiency of a single chiller. A lot of chiller installations will have multiple chillers. So this is a rating for a single chiller.

What is iplv rating for a chiller?

IPLV is to chillers what SEER is to standard air conditioners. It’s the official AHRI efficiency rating for chillers and along with NPLV, is the only rating that matters. IPLV is the AHRI and industry-standard way of measuring the overall average efficiency of a hydronic (chiller) cooling system.

What is NETnet part load value (iplv)?

Net Part load value is also used to assess the performance of the air conditioning system at part load conditions. The formula for calculating the IPLV and NPLV is same as above.

What is the difference between cop and iplv?

Unlike an EER (Energy Efficiency Ratio) or COP (coefficient of performance), which describes the efficiency at full load conditions, the IPLV is derived from the equipment efficiency while operating at various capacities.