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CHARLIE 998
03-16-2006, 07:54 PM
Any other measurement unit of compressed air other than SCFM and Newton Cubic Meter/hr? My customer wants it in Kg/Hr but I'm not familiar with this unit, he could have missed some words.

Robert Fogt
03-16-2006, 10:05 PM
SCFM stands for Standard Cubic Feet per Minute, with the "standard" being standard temperature and pressure.

NCM stands for Normal Cubic Meter, not Newton as you have. The "normal" being standard temperature and pressure.

The symbol kg stands for kilogram, a unit of mass.

You can convert between volume in cubic feet or cubic meters to a unit of mass such as kilograms, but for that you need the density of the substance.

I know the density of air at standard temperature of 4º C and standard pressure of 1 atmosphere, so I can help convert SCF or NCM to kilograms.

But you mention compressed air, which would not be standard pressure. Do you have the density of this?

Unregistered
03-19-2006, 09:10 AM
SCFM stands for Standard Cubic Feet per Minute, with the "standard" being standard temperature and pressure.

NCM stands for Normal Cubic Meter, not Newton as you have. The "normal" being standard temperature and pressure.

The symbol kg stands for kilogram, a unit of mass.

You can convert between volume in cubic feet or cubic meters to a unit of mass such as kilograms, but for that you need the density of the substance.

I know the density of air at standard temperature of 4º C and standard pressure of 1 atmosphere, so I can help convert SCF or NCM to kilograms.

But you mention compressed air, which would not be standard pressure. Do you have the density of this?

Thank you for the information. What is the equivalent of 300SCFM to kg/hr?

Unregistered
03-23-2006, 04:35 AM
How Can I Convert 300scfm To Kg/hr.

Ty

Unregistered
03-23-2006, 04:35 AM
How Can I Convert 300scfm To Kg/hr.

Ty

Robert Fogt
03-23-2006, 01:02 PM
Dry air at 0º C at pressure of 1 atmosphere has a density of 1.29 kg/m³

That would make 300 cubic feet equal to about 11 kilograms.

300 cubic foot/min = 11 kg/min * 60 = 660 kg/hr

Unregistered
03-28-2006, 04:56 AM
Dry air at 0º C at pressure of 1 atmosphere has a density of 1.29 kg/m³

That would make 300 cubic feet equal to about 11 kilograms.

300 cubic foot/min = 11 kg/min * 60 = 660 kg/hr

Thank you very much.

Unregistered
04-07-2006, 10:28 AM
Convert newton meters to kilagrams

Unregistered
05-02-2006, 03:16 AM
how can I convert 1 Nm. cubic per hr. to cubic meter per hr.

gerdeose
05-02-2006, 03:23 AM
how can I convert 1 Nm. cubic per hr. to cubic meter per hr.

how can I convert 1 Nm. cubic per hr. to cubic meter per hr.[/QUOTE]

Unregistered
05-10-2006, 12:38 PM
FYI, Nm3 and SCF are molar quantities, not volumetric quantities
the actual quantity of moles in each depends on what the definition of standard or normal is...always 1 atm pressure, but temp varies...most common I have seen is 60 F for std temp and 0 C for normal temp
300 SCFM is probably 660 kg/h x (492/520) to adjust for temp

Unregistered
05-31-2006, 12:00 PM
This is the Airflow from the Exhaust air from Generator. 2,498 SCFM at a temperature of 977 Deg. F. We need to convert SCFM to Kg/Hr. Can someone help me with this.

Unregistered
05-31-2006, 02:27 PM
The 977 F temperature doesn't matter...you need std conditions temp, which I'll assume is 60 F. You also need the exhaust air MW, and that will depend on what fuel was burned and how much excess air was sent to the burner.
379.5 SCF = 1 lb-mol
Conversion is: kg/h = 2498 SCF/min x 1/379.5 lb-mol/SCF x ?? lb/lb-mol x 60 min/h x 0.454 kg/lb

Unregistered
01-06-2007, 07:35 AM
What is 120 kg/hr in newton meters please?

Unregistered
02-27-2007, 09:00 PM
Any other measurement unit of compressed air other than SCFM and Newton Cubic Meter/hr? My customer wants it in Kg/Hr but I'm not familiar with this unit, he could have missed some words.

Any other measurement unit like Kg to meter, or meter to Kg, Kg to numbers etc

Mrs X
02-28-2007, 04:32 PM
Hi, kg (kilogram) is a unit for weight, it is part of the metric system. 1kg is the same as about 2.2pounds. If you know the flow mass in pounds per hour, you can use these conversion pages to convert it straight to kg/Hr.

gen_vive
05-14-2007, 08:46 AM
help! urgent!

how do i convert ft3/hr to kg/hr? The substance is LPG

Unregistered_Trivikram
07-04-2007, 10:25 PM
Hi... I want to the coversion factor for Newton Cubic Meter / Hr to Tonnes / Day for gaseous oxygen, liquid oxygen & liquid nitrogen. Please help ... !!!

Unregistered
10-15-2009, 11:21 PM

Unregistered
10-16-2009, 06:49 AM
Could you please explain the equation for me? I don't know where you come up with the values of 2498 SCF/Min.
What is the 1/379.5 lb-mol?

It has been sooooooo long since I took chemistry..

JohnS
10-16-2009, 08:42 AM
Could you please explain the equation for me? I don't know where you come up with the values of 2498 SCF/Min.
What is the 1/379.5 lb-mol?

It has been sooooooo long since I took chemistry..

2498 scfm was the "given" in post 12.
379/5 scf is the molar volume of a pound-mole at "standard" conditions of 60 °F, 1 atm. It can be obtained by plugging those values into ideal gas law (and using a value for R, the gas constant, in that unit system.)

Unregistered
11-04-2009, 10:30 PM
how can I convert 30000 Nm. cubic per hr. of air quantity to cubic meter per hr.

JohnS
11-05-2009, 06:25 AM
how can I convert 30000 Nm. cubic per hr. of air quantity to cubic meter per hr.

The "N" is for normal, not newton. It means the volume has either been measured at or converted to normal conditions of 101.325 kPa and 0 °C.

The volume of a gas is a function of temperature and pressure. If you want the volume at any other conditions, you will have to convert it using the Ideal Gas Law or some other gas equation of state.

The first stem is if you don't want normal cubic meters, at what temperature and pressure do you want the volume stated. The volume of a gas has no meaning unless temperature and pressure are stated (or implied).

Unregistered
12-29-2010, 09:36 PM
SCFM stands for Standard Cubic Feet per Minute, with the "standard" being standard temperature and pressure.

NCM stands for Normal Cubic Meter, not Newton as you have. The "normal" being standard temperature and pressure.

The symbol kg stands for kilogram, a unit of mass.

You can convert between volume in cubic feet or cubic meters to a unit of mass such as kilograms, but for that you need the density of the substance.

I know the density of air at standard temperature of 4º C and standard pressure of 1 atmosphere, so I can help convert SCF or NCM to kilograms.

But you mention compressed air, which would not be standard pressure. Do you have the density of this?

Thank you Mr. robert fogt for your comment. it cleared my confusion about NCM/hr as i considered it to be "newton cubic meter/hr". thanks again !

Unregistered
10-01-2012, 09:54 PM
what will be 3456 SCFM to convert to KG/H.
Please respond. Possible with explanation of how we derive the conversion part concern