[Digestion] density of methane and bottling

Paul Harris paul.harris at adelaide.edu.au
Thu Mar 31 05:22:14 CDT 2011


G'day Krishna,

 

I think the different figures are for different pressures and/or
temperatures, as conventions vary. I have a value of 0.628 kg/m3 at 1.103
kPa and 20C, so 1000 m3 of biogas will become 737 cubic metres of 95%
methane. Ignoring the CO2 will give 700 m3 of methane, weighing about 440
kg. This will be the mass whatever the pressure (unless you have a leak!).
At 180 bar the volume will be approximately 4 cubic metres (at 20C).

 

Hope this helps,

HOOROO

 

Mr. Paul Harris, Room 202 Charles Hawker Building, Faculty of Sciences, The
University of Adelaide, Waite Campus, PMB 1, Glen Osmond SA 5064 Ph    : +61
8 8303 7880      Fax   : +61 8 8303 4386 mailto:paul.harris at adelaide.edu.au
http://www.adelaide.edu.au/directory/paul.harris

 

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From: digestion-bounces at lists.bioenergylists.org
[mailto:digestion-bounces at lists.bioenergylists.org] On Behalf Of Murali
Krishna
Sent: Thursday, 31 March 2011 4:47 PM
To: Digestion at bioenergylists.org
Subject: [Digestion] density of methane and bottling

 

Hi,

I shall thank you to clarify the follwoing:

The density of methane is shown as 0.67, 0.72 and 1.2 on the web.  Presuming
that 1000 cubic meter of methane at 70% in biogas,  purified upto 95% and
then compressed what will be the output of gas in kgs.  It is likely to be
compressed at three stages upto 180 bar pressure.

Krishna

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