[Digestion] density of methane and bottling

[Murali Krishna]

Good day Paul,

Thank you for your prompt reply.

How have you arrived at 440 kg weight from 700 m3 of methane? Will you
please elaborate?

Regards,

Krishna




On Thu, Mar 31, 2011 at 3:52 PM, Paul Harris <paul.harris at adelaide.edu.au>wrote:

>  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,
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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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>
>
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