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#1
04-07-2008, 01:03 AM
 HR3@sanmargroup.com Guest Posts: n/a
1 SCFH = How much Nm3/hr.

1 SCFH = How much Nm3/hr. Pls. let me know.
#2
04-07-2008, 03:44 AM
 JohnS Moderator Join Date: Dec 2007 Location: SE Michigan, USA Posts: 9,535 Rep Power: 19
Re: 1 SCFH = How much Nm3/hr.

Quote:
 Originally Posted by HR3@sanmargroup.com 1 SCFH = How much Nm3/hr. Pls. let me know.
Well, it is easy and hard:
1 ft³ = 0.028 316 8466 m³
N != S

"Normal" in Nm³ implies conditions of 273.15 K (0 °C) and 101.325 kPa. "Standard" in SCFH implies some standard temperature and the same pressure. Problem is, different industries use 15 °C, 60 °F, 20 °C, 75°F, 25 °C, and possibly others. Unless you know which standard temperature, SCFM is basically meaningless. If you find the temperature, convert to volume at 0 °C using Ideal Gas Law first, then convert to m³.
#3
07-26-2010, 05:27 AM
 Unregistered Guest Posts: n/a
Re: 1 SCFH = How much Nm3/hr.

Quote:
 Originally Posted by HR3@sanmargroup.com 1 SCFH = How much Nm3/hr. Pls. let me know.
1scfm - 1.699 Nm3/Hr
1SCFH = 0.02832 Nm3/Hr
#4
09-30-2010, 04:01 PM
 Unregistered Guest Posts: n/a
Re: 1 SCFH = How much Nm3/hr.

Quote:
 Originally Posted by JohnS Well, it is easy and hard: 1 ft³ = 0.028 316 8466 m³ N != S "Normal" in Nm³ implies conditions of 273.15 K (0 °C) and 101.325 kPa. "Standard" in SCFH implies some standard temperature and the same pressure. Problem is, different industries use 15 °C, 60 °F, 20 °C, 75°F, 25 °C, and possibly others. Unless you know which standard temperature, SCFM is basically meaningless. If you find the temperature, convert to volume at 0 °C using Ideal Gas Law first, then convert to m³.
This is a problem in the industry to be honest.

I've worked on technical documents that mention "standard" but didn't mention the basis for the standard.

Depending on which industry you're dealing with, the temperature can differ as mentioned above.

So you must know which temperature the standard is based on. You can assume, but you may get a different answer than what you're looking for. This is very crucial especially if you're selling gases to consumers.

If you can get hold of the mass flow, then I think it's easier to work on it to get the corresponding volume flow.
#5
09-15-2011, 02:03 AM
 Unregistered Guest Posts: n/a
1000 scmh = howmuch kg/hr

media -natural gas
flow - 1000scmh
temp --ambient
final output of heter =60deg C
I have to convert mass flow
1000 scmh = howmuch kg/hr
#6
10-18-2011, 08:42 PM
 Unregistered Guest Posts: n/a
Re: 1 SCFH = How much Nm3/hr.

1000 scfh = how much kg?cm2
#7
03-22-2012, 08:22 AM
 Unregistered Guest Posts: n/a
Re: convert scfh to ppm

If a valve is leaking 0.5 scfh, can we determine how many parts per million the leak is?
#8
04-11-2012, 11:45 PM
 Unregistered Guest Posts: n/a
2.7 MMSCFH = How much Sm3/hr.

2.7 MMSCFH = How much sm3/hr. Pls. let me know.[/QUOTE]
#9
04-12-2012, 03:55 AM
 JohnS Moderator Join Date: Dec 2007 Location: SE Michigan, USA Posts: 9,535 Rep Power: 19
Re: 2.7 MMSCFH = How much Sm3/hr.

Quote:
 Originally Posted by Unregistered 2.7 MMSCFH = How much sm3/hr. Pls. let me know.
[/QUOTE]

At the same temperature and pressure
2.7 x 10^6 scfh x 0.028 316 8466 m³/ft³ = 76455.5 m³/h
#10
07-19-2012, 03:05 AM
 Haresh Mod Guest Posts: n/a
Re: convert scfh to ppm

Quote:
 Originally Posted by Unregistered If a valve is leaking 0.5 scfh, can we determine how many parts per million the leak is?
Dear Sir,

1 PPM = 0.0001%
1000PPM = 1%

So now you have to mention your total flow of Valve so that we will easily decide for leakage.
percentage.

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