nLPM stands for Normal Liters per Minute. This is actually a mass flow rate because it describes the amount of gas that would have the indicated LPM volumetric flow rate AT 1 atmosphere pressure and 0 degrees C. The actual volumetric flow rate (LPM) at any other temperature or pressure condition must be adjusted according to the ratios of absolute temperatures and (inversely) absolute pressures.
Conversion from LPM to NLPM: NLPM = LPM * (273.15/Tgas)*(Pgas/14.696) Where Pgas is absolute pressure in PSI Tgas is gas temperature in Kelvin e.g. Convert 1000LPM to nLPM value by considering the gas temperature 30 deg. cel. & absolute pressure 1 bar NLPM = 1000 * (273.15/303.15)*(14.50377/14.696) NLPM = ~ 890 - Sanjay Rajput (Pune)
To convert cmh to cfm ..... divide cmh by 1.7 to convert into cfm....
Tr = cfm/400
CFM is a rate of flow. KW is a rate of energy. You really cannot convert them.
divide by 60
1,000 cfm (feet3/min) is 0.4719474 m3/sec.
hoe do you convert household system?
No. BTUs are heat (British Thermal Units) and cfm is a measure of air flow volume (cubic feet per minute)
Cmh = cubic meters per hour cfm = cubic feet per minute m3/hr * 35.3ft3/m3 * hr/60minutes = ft3/minute So, 1 cmh = 0.5883 cfm
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If you know the FPM and you know the area of your flow say duct work (20"x20")...first convert your area 20*20=400 in2 to Ft220"*20" = 400in2 400in2/144 = 2.7777Ft2Now that you know the area in Ft2 you can use the equation [ FPM*area(ft2) = CFM ]if your FPM is 500 and we use the 20"x20" duct then500fpm * 2.777Ft2 = 1388.5 cfm
CFM is a Volumetric Flow Rate while m/s is a velocity, you need the additional measurement of the Cross Sectional Area of the flow to fully work it out.Since there are 2118.88 CFM : 1 m3/s41.3 CFM divided by 2118.88 = 0.01949 m3/sDivide this by the area in m2 & you will get m/s.