How to calculate the efficiency of a chiller
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| chiller efficiency title how to calculate chiller efficiency |
How to calculate the efficiency of the chiller. Chillers are one of the largest energy consumers in a building, which has a huge impact on operating costs. Therefore, it is important to monitor your chillers to gauge system efficiency and ensure optimal performance. Therefore, in this article we will see how to calculate the efficiency of a chiller. Do you need to learn this quickly?
Scroll down to see the video tutorial.
Calculating the efficiency of a chiller is quite simple. It is measured in "COP", which stands for Coefficient of Performance.
The coefficient of performance is nothing more than a relationship between the refrigeration effect produced by the cooler and the amount of electrical energy that has entered the machine to produce it. Both units must be measured in kilowatts (kW). Let's see how this is accomplished.
For example, consider a chiller that produces 2,500 kW of cooling or 8,533,364 BTU/hr in metric units. The electrical power demand of the chiller to produce this is 460kW.
The metric calculation would be:
2,500 kW / 460 kW = 5.4 so the COP is 5.4. This means that for every 1 kW of electricity you put into the machine, it produces 5.4 kW of cooling.
The imperial calculation would be:
Convert BTU to kW first
8,533,364 BTU/s / 3,412.142 = 2,500kW
2,500 kW / 460 kW = 5.4 so the COP is 5.4. This means that for every 1 kW of electricity you put into the machine, it produces 5.4 kW of cooling.
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| how to calculate the efficiency of an imperial and metric chiller |
It is important to remember that the COP of a chiller varies with the cooling load on a chiller and each chiller has a different COP. The chiller manufacturer should be able to provide COP design data that you can compare to the performance of your chiller. to diagnose performance issues
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| vsd chiller efficiency and constant velocity |
Conventional single speed chillers will generally reach their highest COP at or near full load, but most chillers will run part load 98% of the year; If this is the case, you should contact a specialist to see if you need a VFD that can be adapted to the motor controls, as this will reduce the rotation speed of the compressor, which will decrease the electrical demand and increase the COP to partial load.
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