how I can convert from the NM3/HR t

[Amir Nagy]

how I can convert from the NM3/HR to KG/HR for natural gas ?

 

[LittleInch]

By knowing the gas density at whatever your nominal pressure is.

"Natural" gas is usually about 0.7 to 0.9 kg/m3

https://www.engineeringtoolbox.com/gas-density-d_158.html

Depends how exact you want to be, but this is really basic stuff...

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[1503-44]

And temperature.

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[LittleInch]

Well he said NM3/hr so the density needs to be at that pressure and temperature. Amir - Note that Nm3 is not fixed, but commonly 101325Pa and 15C/60F or somewhere close to it.

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[1503-44]

Sometimes, especially in the EU, but rarely in the US, "standard" temp might be 0°C

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[horacio Torres]

Use  PV = ZNRT    

normal conditions    P = 1 bar  T = 15 ° C

Using equation you can transform NM3  to  Kg/Hr

You need the molecular weight of natural gas and with standart P Y T you will find density at this conditions

Density =  PxPM / ZxRxT  Check the right units for the calculations.


Horacio

 

[MortenA]

Amir, Nm³ is a specific amount of mols (no matter what gas you are referring to): 0.02241 Nm3/mol or 0.0442 kmol/Nm3

So if you know your MW of the gas then you can easily calculate mass flow.

If pure CH¤ (18 kg/kmol)

1Nm³/hr= 18*0.0442= 0.803 kg/hr

This is of course assuming that you consider the most normal conditions: 1 atm and 0ºC but as others have mentioned normal is only "normal"....

Best regards, Morten

 

[1503-44]

Sometimes which "standard" temperature and pressure you use makes the most difference.

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