The True Cost of PRESSURE DROP

The True Cost of PRESSURE DROP

Pressure drop wastes dollars. To overcome pressure drop and maintain system pressure, your compressor must draw additional electric power. Every 2 psi of pressure adds 1% to the cost of electric power supplied to the compressor.

Calculating Costs
This graph provides a method for determining the cost of the total pressure drop in your entire system – from the compressor to the point of use . Locate your Electric Utility Rate on the horizontal axis; read upward to intersect the line that corresponds to your compressor horsepower; read left to the vertical axis to determine the cost of each psi drop in pressure for a compressor operating three shifts at 8760 hours per year. Multiply the annual cost per psi ($/psi) by the total pressure loss.

If your compressor operates less than 24 hours a day, multiply the cost determined from the graph by actual hours of operation per year dived by 8760. Example: pressure loss during single shift operation at five days a week or 2080 hours per year would cost 2080 divided by 8720 or about 24% of the cost determined from the graph. This is the ongoing annual cost necessary merely to compensate for pressure loss in your system.

EXAMPLE: Pressure at air compressor (100 hp) is 120 psig, pressure at point of use is 100 psig = 20 psi drop. If operation is 24/7, kWh is 8 cents your pressure drop cost is $10,000 per year. (8 x 500 x 20). Single shift operation = $2,400 per year.
For information on how to reduce your pressure drop please contact us.