Question

How is the IKW TR calculated for a chiller?

Answer 1

In the context of chillers, the term "IKW TR" likely refers to "Input Kilowatts per Ton of Refrigeration." It is a measure of the chiller's energy efficiency, representing the electrical input power required to produce one ton of refrigeration (12,000 British Thermal Units or BTUs) by the chiller. Lower IKW TR values indicate higher energy efficiency.

To calculate IKW TR for a chiller, you'll need the following information:

1. Chiller Input Power: This is the total electrical power consumption of the chiller, usually measured in kilowatts (kW). It can be obtained from the chiller's specifications or directly from power monitoring devices.

2. Cooling Capacity: This represents the amount of heat the chiller can remove in one hour, typically measured in tons of refrigeration (TR). One TR is equivalent to 12,000 BTUs per hour.

Once you have these values, you can use the formula to calculate IKW TR:

$IKWTR=\frac{\text{Chiller Input Power (kW)}}{\text{Cooling Capacity (TR)}}$

For example, let's say you have a chiller with an input power of 120 kW and a cooling capacity of 200 TR:

$IKWTR=\frac{120\text{kW}}{200\text{TR}}=0.6\text{KW/TR}$

In this example, the chiller's IKW TR is 0.6 KW/TR, meaning it requires 0.6 kilowatts of electricity to produce one ton of refrigeration per hour.

Remember that IKW TR is just one of the many factors to consider when evaluating a chiller's energy efficiency. Other factors like part-load performance and overall system design should also be taken into account for a comprehensive assessment.