## How to convert Kg/hr to Nm3/hr

## How to convert Kg/hr to Nm3/hr

(OP)

Can anyone help....

How do I convert Kg/hr to Nm3/hr?

The liquid is Ammonia, Flow Rate is 7200 Kg/hr, Density is 681 Kg/m3 & Pressure is 17.5 Barg

Thanks.

How do I convert Kg/hr to Nm3/hr?

The liquid is Ammonia, Flow Rate is 7200 Kg/hr, Density is 681 Kg/m3 & Pressure is 17.5 Barg

Thanks.

## RE: How to convert Kg/hr to Nm3/hr

If your flow is LIQUID ammonia then you can pretty safely assume that this is incompressible and thus volume does not vary with pressure (density is constant with pressure).

Simply divide the kg/h by density (kg/m3) to get m3/h (actual m3 of ammonia flowing per hour).

## RE: How to convert Kg/hr to Nm3/hr

David

## RE: How to convert Kg/hr to Nm3/hr

## RE: How to convert Kg/hr to Nm3/hr

1) the volume at actual conditions which you obtain by dividing by the density at the process temperature

or

2) the standard volume where you divide by the density at 15degC (or, 60degF dependent as appropriate).

These calculations are quite familiar (the other way round) in hydrocarbon metering where volumetric flow measurements are often made but where the mass is required, and often the volume amounts are recorded as at standard conditions rather than the sometimes variable process conditions.

JMW

www.ViscoAnalyser.com

## RE: How to convert Kg/hr to Nm3/hr

Use density = (MW * Pressure) / (gas constant * temp(abs))

Nm^3 are Normal

Temperature = 0 degC (273.15 degK)

Pressure = 760 mm Hg

Regards

David

## RE: How to convert Kg/hr to Nm3/hr

David

## RE: How to convert Kg/hr to Nm3/hr

http://

"We don't believe things because they are true, things are true because we believe them."

## RE: How to convert Kg/hr to Nm3/hr

Have you even read this thread or did you just jump from the old question to a pointless answer? The OP hasn't been back in this thread in over a month.

David

## RE: How to convert Kg/hr to Nm3/hr

Flareman stated: "Nm^3 are Normal Temperature = 0 degC (273.15 degK) Pressure = 760 mm Hg"

The link namely shows that many different definitions of standard references conditions are currently being used by organizations all over the world...

"We don't believe things because they are true, things are true because we believe them."