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Q: What is the true cost of compressed air?
A: 15% fixed cost for the compressor, installation, depreciation
and insurance.
20% operating cost for inspection, maintenance and repair.
65% power cost for energy and demand to operate the system
At $0.06 per kWhr, the estimated cost of compressed air is $0.02
per 100 cfm ($0.0002 per cubic foot). A 10 hp compressor delivering
35 cfm = $0.007/minute, $0.42/hour, $10.08/day, $302.40/month
or $3,628.80/year.
Q: What is the hidden cost of bad air quality?
A: Bad Air = Repair Cost + Replacement Cost + Lost Production.
Q: What is the cost of pressure drops?
A: Avoid costly pressure drops and save money. NOTE: A 10 hp compressor
producing 35 cfm at 100 psig and connected to a straight run of
100 feet of 1" diameter pipe will result in a .27 psi pressure
drop. Every 90° elbow will equal to an additional 25 feet
of pipe. Four elbows, another loss of 1.12 psi. Each lost pound
of pressure equals the loss of .5 percent horsepower. Horsepower
equates to power; power equates to money.
Q: What is the cost of an air leak?
A: Eliminate air leaks and save money. The cost of a 1.8"
air leak at 100 psi (26 cubic feet per minute) represents $0.31
per hour or $313 for every 10,000 hours of operation. Fix the
leak and save money.
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