air compressor kw to cfm calculator

Ft. = 7.48 gallons. First unit: kilowatt (kW) is used for measuring power. { if(bhp == "") else How many atmosphere cubic feet / minute are in 1 kilowatt? var hour = document.getElementById('hour').value; This makes the compressors start and stop less, which is great for their health. Pressure drop, every compressed air system worst enemy! CONVERT :   between other power measuring units - complete list. { Let’s see. It acts like a buffer for sudden air consumption spikes. while (rgx.test(x1)) { document.getElementById('energy_user').value = round_up(((bhp * 0.746) / ME ) * hour); x2 = x.length > 1 ? function cal_kWh() var RE_NUM = /^[0-9. if(bhp == "") '.' } View Newsletter Archives », © 2009-2020 Lewis Systems and Service Company. '); } In other words, per HP, the compressor output will be smaller at 125 psi. Pressure drop is created by resistance in the system between the compressor and the air consumer. return false; x = nStr.split('. CFM of compressed air required to raise a known system pressure to a desired system pressure:C2 = Required CFM total C1 = Existing or known CFM P2 = Desired pressure P1 = Known Pressure EXAMPLE: A 75 HP Compressor rated at 320 CFM t 125 PSIG will hold only 85 PSI and we desire 125 PSI.C1 = 320 CFM P2 = 125 + 14.7 (139.7) P1 = 85 + 14.7 (99.7) return false; } The power converter from kW ( kilowatts ) measure to atm cfm ( atmosphere cubic feet / minute ) equivalent. 4 kilowatts to atmosphere cubic feet / minute = 83.65 atm cfm. 1 Cu. atm cfm ANSWER: 15 kW = 313.68 atm cfm, Abbreviation, or prefix, for kilowatt is: kW So we must create a higher pressure at the compressor, to account for the pressure drop. function addCommas(nStr) alert('Please enter some value for cost'); The answer is: 1 kW equals 20.91 atm cfm. Not as catchy, I know . '); The link to this tool will appear as: power from kilowatt (kW) to atmosphere cubic feet / minute (atm cfm) conversion. A 10 HP unit will output around 40 to 50 cfm at 100 psi. if (!RE_NUM.test(bhp)) { var rgx = /(\d+)(\d{3})/; Not really a rule of thumb, but here are some typical discharge air temperatures of industrial air compressors: Of course, temperatures will vary depending on running conditions like cleanliness of coolers, ambient temperatures, loading times, etc. document.getElementById('bhp').focus(); + x[1] : ''; As a rule of thumb, 2 psi pressure drop costs 1% extra energy. Now empty the tank and refill again. Subscribe document.getElementById('metric_ton').value = round_up(document.getElementById('energy_user').value * 0.000718); { In SI units, this rule of thumb would be: 5 liters per day per kW compressor power return false; else 42 Industrial Dr, Keyport, NJ 07735. var cost = document.getElementById('cost').value; Ambient temperature: 20 degrees CelsiusRelative humidity:50%A 45 HP compressor Runs 24 hours a day. But first and foremost, its essential to understand that CFM and KW are not directly convertible metrics. My goal is to share knowledge about industrial air compressors and compressed air systems. Discuss with Lewis Systems Audit Professionals the potential benefits of an energy audit in Charlotte NC, Raleigh NC, Greensboro NC and Lynchburg VA. 9300 Stockport Place • Charlotte, NC 28273, 140 North Business Ct • Rocky Mount, NC 27804, Get promotions, news, and helpful tips. return false; alert('Please enter some value for cost'); var hour = document.getElementById('hour').value; return false; } document.getElementById('hour').focus(); return false; } document.getElementById('hour').focus(); return Math.round(val); Want to save on energy and running costs? } It keeps the pressure more stable, because with a bigger air receiver, it requires more air flow out of the receiver for the same amount of pressure drop. ]+$/; document.getElementById('energy_cost').value = round_up(document.getElementById('energy_user').value * cost); Free Compressed Air Basics CourseLearn about compressed air - click here, Learn about industrial compressed air systems and receive fresh articles in your inbox. ]+$/; x2 = x.length > 1 ? } CFM refers to Cubic Feet per Minute, which measures the volume of air that is coming out of an air compressor each minute. A big air receiver helps to keep the compressed air system stable. How much water is generated in a compressed air system depends mainly on the relative humidity and temperature of the ambient air. return false; { Typically, in a system without air dryer, 1/4 of that will condense into liquid in the after cooler. At 20 degrees Celsius and a relative humidity of 50%, a quick calculation gives us that this compressor takes in around 23 gallons of water per day. Conversion tool with multiple power units. if (!RE_NUM.test(cost)) { } Not all of that water in condense into liquid. x1 = x1.replace(rgx, '$1' + ',' + '$2'); nStr += ''; It also helps in removing oil and water from the compressed air (condensation in the air receiver). "); document.getElementById('metric_ton').value = addCommas(document.getElementById('metric_ton').value); return x1 + x2; { document.getElementById('energy_cost').value = addCommas(document.getElementById('energy_cost').value); Learn About Lewis Systems Energy Audit Today! return x1 + x2; 2 kilowatts to atmosphere cubic feet / minute = 41.82 atm cfm. document.getElementById('cost').focus(); In both equations, you can substitute your information to see what you actually pay to make compressed air each year at your facility. } } document.getElementById('bhp').focus(); A compressor makes compressed air – but it also produces lot’s of water! The water comes from the ambient intake air. 1 kilowatt to atmosphere cubic feet / minute = 20.91 atm cfm. document.getElementById('net_profit').value = round_up(document.getElementById('energy_cost').value / 0.08); If we convert this rule of thumb to SI units, we get something like: For every 1 kW power, a compressor delivers 2.5 to 3.2l/s. Download my free report ‘Hidden Compressor Problems”, Single-stage piston compressor: 350°F or 180°C, Two-stage piston compressor:  250°F or 120°C. { } else Combined brake horsepower rating of operating air compressors, ME: 0.96 0.95 0.94 0.93 0.92 0.91 0.90 0.85, www.epa.gov/cleanenergy/energy-resources/refs.html, Lontra Signs Agreement with IAC to Begin U.S. Distribution, Schulz Opens New Office in the United States, Atlas Copco Specialty Rental's Compressors Comply with EPA and Save on Stack Testing, Emerson Introduces AVENTICS Series AF2 Flow Sensor Monitor. If we run it for 6000 hours per year, at 10 cents per kWh, we pay: 33 * 6000 * 0.10 = $ 19,800  in electricity cost per year! if(hour == "") QUESTION: 15 kW = ? In this rule of thumb, a day is 24 running hours, and this is really worst-case, like running your compressor in a tropical rain forest for example. Converted to SI units, this rule of thumb becomes: Air receivers should be 30 liters for every 1 l/s compressor capacity. document.getElementById('bhp').focus(); The objective of compressed air energy-savings projects is to reduce the kWh consumed by the electric motors powering your air compressors. 2/4 will condense in the piping system (if given time to cool down) and the last 1/4 will stay in the compressed air as water vapor. else Let’s work backwards with our formula and see what we get. function round_up(val) document.getElementById('hour').focus(); For example, lets take a 45 HP /  33 kW air compressor. This costs use extra energy, and therefore money. { The objective of compressed air energy-savings projects is to reduce the kWh consumed by the electric motors powering your air compressors. The objective of compressed air energy-savings projects is to reduce the kWh consumed by the electric motors powering your air compressors. document.getElementById('energy_user').value = round_up(((bhp * 0.746) / ME ) * hour); Air receivers should be 500 liters for every 1 m3/h compressor capacity. The air compressor cfm psi calculator formula is: CFM = Tank Volume in Cubic Feet x Standard Pressure (ATM) during a cycle x Cranks per Minute. x1 = x[0]; { return false; { alert("Please enter numeric values only. { var bhp = document.getElementById('bhp').value; if (!RE_NUM.test(bhp)) { Web design by, Kobelco KNW Series Oil-Free Rotary Screw Air Compressors, Powerex Industrial, Medical Air & Gas Products. function addCommas(nStr) nStr += ''; Power units represent power physics, which is the rate at which energy is used-up, either transformed or transferred from its source to elsewhere, by various ways within the nature of physics. As a rule of thumb, for every 18 °F above 200 °F, the compressor oil life is reduced by 50%. var ME = document.getElementById('me_val').value; 3. work with power's values and properties. document.getElementById('cost').focus();

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