conversion :-nm3 to m3

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conversion :-nm3 to m3

Postby vishal dixit » Wed Apr 21, 2004 12:54 pm

how to convert :-normal metre cube to meter cube.
vishal dixit

Re: conversion :-nm3 to m3

Postby Guest » Thu Apr 22, 2004 11:06 pm

vishal dixit wrote:how to convert :-normal metre cube to meter cube.

metre and meter are the same thing.

Postby Guest » Thu Jul 14, 2005 3:25 pm

[quote="Anonymous"]Representing "normal meter cubed" as Nm³ or nm³ is a bad practice, contrary to SI conventions because "n" is reserved as a prefix for nano-, and "N" is reserved for newton. This is guarenteed to cause confusion for some people who read it. Since "normal" is not usually used in the US, I don't know what the preferred notation is.

Not too sure that it is bad practice to use N for 'normal'. There are precendents for multiple use of the same letters, e.g. m for milli and metre. The key thing is to ensure that units are separated with spaces or full stops (e.g. N m or N.m for Newton metres) whereas prefixes are adjacent (e.g. Nm3 for normal metres cubed).

However, use of 'Normal' has always created confusion regarding what temperature is applied, e.g. 0 C, 15 C, 20 C, 60 F. I used to think it was 20 C but have now been converted to the 0 C definition (although this is anything but 'normal' where I live!). Perhaps the important thing is to ensure that the document/spec/data sheet that refers to Nm3 has a clear definition in terms of temperature. Don't thing there is any confusion on the pressure of 1.013 bar a though?

Nm3 to m3

Postby Sagar » Mon Aug 29, 2005 12:32 pm

I dont think that Nm3 is a bad pratice as most of the design value of a gas flow mentioned by suppliers outside india is that.. only thing is we need to convert them to m3/h during calcutions - which is same as mentioned b4 - nm3 is volume at 1atm or 10330 mmWc and 273 K , and hence actual volume at given conditions can be evaluated by ideal gas law..

Postby Guest » Mon Aug 29, 2005 6:19 pm

The SI Brochure (or NIST SP 330, if you're American) specifically deprecate attaching "qualifers" of any kind directly to the unit.

Re: conversion :-nm3/hr to kg/hr

Postby krishna » Tue Oct 23, 2007 11:07 am

Conversion of Flue gas of 24000 Nm3/Hr to kg/Hr

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