Calculate the Annual Electricity Cost of a 75-hp Compressor

How can we determine the annual electricity cost of a 75-hp compressor?

A 75-hp compressor in a facility that operates at full load for 2500 hours a year is powered by an electric motor that has an efficiency of 88%. If the unit cost of electricity is $0.06/kWh, what is the annual electricity cost of this compressor?

Annual Electricity Cost Calculation:

The annual electricity cost of the compressor is $11,528.33.

Have you ever wondered how much it costs to power a 75-hp compressor for a year? Let's break it down! To calculate the annual electricity cost, we first need to determine the power consumption of the compressor. We can do this by using the formula:

Power Consumed (kW) = Power of Compressor (hp) / Motor Efficiency x Conversion Factor

After plugging in the given values, we find that the power consumed is 76.855 kW. Next, we calculate the annual energy consumption using the formula:

Energy Consumption (kWh) = Power Consumed (kW) x Operating Hours per Year

Substituting the values, we get an annual energy consumption of 192,138.75 kWh. Finally, to find the annual electricity cost, we use the formula:

Electricity Cost = Energy Consumption (kWh) x Unit Cost of Electricity

When we substitute the values, we arrive at an annual electricity cost of $11,528.33. It's fascinating to see how these calculations help us understand the financial implications of operating industrial equipment. By optimizing efficiency and usage, we can effectively manage energy costs in facilities.