<br><br>Good day Paul,<br><br>Thank you for your prompt reply. <br><br>How have you arrived at 440 kg weight from 700 m3 of methane? Will you please elaborate?<br><br>Regards,<br><br>Krishna<br><br><br><br><br><div class="gmail_quote">
On Thu, Mar 31, 2011 at 3:52 PM, Paul Harris <span dir="ltr"><<a href="mailto:paul.harris@adelaide.edu.au">paul.harris@adelaide.edu.au</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
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<p class="MsoNormal"><span style="font-size: 11pt; color: rgb(31, 73, 125);">G’day Krishna,</span></p>
<p class="MsoNormal"><span style="font-size: 11pt; color: rgb(31, 73, 125);"> </span></p>
<p class="MsoNormal"><span style="font-size: 11pt; color: rgb(31, 73, 125);">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).</span></p>
<p class="MsoNormal"><span style="font-size: 11pt; color: rgb(31, 73, 125);"> </span></p>
<p class="MsoNormal"><span style="font-size: 11pt; color: rgb(31, 73, 125);">Hope this helps,</span></p>
<p class="MsoNormal"><span style="font-size: 11pt; color: rgb(31, 73, 125);">HOOROO</span></p>
<p class="MsoNormal"><span style="font-size: 11pt; color: rgb(31, 73, 125);"> </span></p>
<p class="MsoNormal"><span style="font-size: 10.5pt; font-family: Consolas; color: rgb(31, 73, 125);">Mr. Paul Harris, Room 202 Charles Hawker Building, Faculty of
Sciences, The University of Adelaide, Waite Campus, PMB 1, Glen Osmond SA
5064 Ph : <a href="tel:%2B61%208%208303%207880" target="_blank">+61 8 8303 7880</a>
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<p class="MsoNormal"><b><span style="font-size: 10pt;" lang="EN-US">From:</span></b><span style="font-size: 10pt;" lang="EN-US"> <a href="mailto:digestion-bounces@lists.bioenergylists.org" target="_blank">digestion-bounces@lists.bioenergylists.org</a>
[mailto:<a href="mailto:digestion-bounces@lists.bioenergylists.org" target="_blank">digestion-bounces@lists.bioenergylists.org</a>] <b>On Behalf Of </b>Murali
Krishna<br>
<b>Sent:</b> Thursday, 31 March 2011 4:47 PM<br>
<b>To:</b> <a href="mailto:Digestion@bioenergylists.org" target="_blank">Digestion@bioenergylists.org</a><br>
<b>Subject:</b> [Digestion] density of methane and bottling</span></p>
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<p class="MsoNormal">Hi,<br>
<br>
I shall thank you to clarify the follwoing:<br>
<br>
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.<br>
<br>
Krishna</p>
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