Air Moisture Content
Grains of water in one cubic foot of air at various temperatures and percentages of saturation. On average, for every 20 degrees Fahrenheit temperature drop, we loose one half the water.
Dew Point Conversion Chart
Cost of Compressed Air
15% Fixed Charges: Compressor, Installation, Depreciation, Insurance, Repair.
15% Operating Charges: Attendance, Lubrication, Cooling-Water, Filters.
70% Power: Electric Motor Driven (both energy & demand) at 6 cents/kW hr.
20 cents per 1000 CF @ 100 PSIG: 200 HP = 1000 CFM X 60 min. X 24 hr. = $288.00 per day.
Rule of Thumb: Cost $1.00 per HP per 24 hrs. at 6 cents per kW hour.
Cost of Air Leakage 1/4″ leak = 2,920,000 cu. ft. per month = $684.00.
Discharge, Cubic Feet, Free Air Per Minute
Friction of Air in Hose
Pipe Size Recommendation (80-125 PSI)
Sand Blasting Nozzles