[Digestion] Digestion Digest, Vol 5, Issue 19

Wed Jan 26 21:02:44 CST 2011

what is the flow rate and pressure you will be having for the gas. Pls
give minimum and maximum values.

On 1/27/11, digestion-request at lists.bioenergylists.org
<digestion-request at lists.bioenergylists.org> wrote:
> Send Digestion mailing list submissions to
> 	digestion at lists.bioenergylists.org
>
> To subscribe or unsubscribe via the World Wide Web, visit
> 	http://lists.bioenergylists.org/mailman/listinfo/digestion_lists.bioenergylists.org
>
> or, via email, send a message with subject or body 'help' to
> 	digestion-request at lists.bioenergylists.org
>
> You can reach the person managing the list at
> 	digestion-owner at lists.bioenergylists.org
>
> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of Digestion digest..."
>
>
> Today's Topics:
>
>    1. Biogas meter (fwitarsa at umd.edu)
>    2. Re: Biogas meter (Alastair James Ward)
>    3. Re: Biogas meter (Alexander Eaton)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Tue, 25 Jan 2011 15:57:05 -0500 (EST)
> From: <fwitarsa at umd.edu>
> To: digestion at lists.bioenergylists.org
> Subject: [Digestion] Biogas meter
> Message-ID: <20110125155705.BCG47917 at po7.mail.umd.edu>
> Content-Type: text/plain; charset=us-ascii
>
> Hi there,
>
> My name is Freddy Witarsa and I am a student at University of Maryland in
> the
> US. We are currently building biodigesters and I am designing the gas
> collection
> system. I have a question regarding the biogas meters that could be used for
> measuring the amount of biogas produced. Currently, we have a chinese model
> meter JBD2.5-SA. We are hesitant to use it because it is not temperature and
> pressure compensated. Does anyone have any good suggestions for low-flow
> gas meter that is pressure and temperature compensated?
>
> Also, diaphragm meters seems to be ideal for low-flow gas measurement, but I
> believe it is not ideal for biogas because of the biogas moisture content,
> which
> could lead to corrosion of the meter. Does anyone know of diaphragm meters
> that are built specially for biogas (i.e. with stainless steel etc.)?
>
> Thank you very much for your help.
>
> Freddy Witarsa
>
>
>
> ------------------------------
>
> Message: 2
> Date: Wed, 26 Jan 2011 09:07:48 +0100
> From: Alastair James Ward <Alastair.Ward at agrsci.dk>
> To: For Discussion of Anaerobic Digestion
> 	<digestion at lists.bioenergylists.org>
> Subject: Re: [Digestion] Biogas meter
> Message-ID:
> 	<6195E102F8A53148ADF2761BF536F98F0285D47E05D6 at DJFEXMBX01.djf.agrsci.dk>
> 	
> Content-Type: text/plain; charset="us-ascii"
>
> Hi Freddy,
>
> I suppose you could measure temperature and pressure and correct your
> recorded figures?
>
> I have not used diaphragm meters, I have heard they do not last long but
> then I have seen some being used for months if not years with a silica gel
> column fitted upstream of the meter. They are pretty cheap too and sometimes
> available with digital outputs for online measurement.
>
>
>
> Med venlig hilsen / Regards
> Alastair James Ward
>
>
>
> -----Original Message-----
> From: digestion-bounces at lists.bioenergylists.org
> [mailto:digestion-bounces at lists.bioenergylists.org] On Behalf Of
> fwitarsa at umd.edu
> Sent: 25. januar 2011 21:57
> To: digestion at lists.bioenergylists.org
> Subject: [Digestion] Biogas meter
>
> Hi there,
>
> My name is Freddy Witarsa and I am a student at University of Maryland in
> the US. We are currently building biodigesters and I am designing the gas
> collection system. I have a question regarding the biogas meters that could
> be used for measuring the amount of biogas produced. Currently, we have a
> chinese model meter JBD2.5-SA. We are hesitant to use it because it is not
> temperature and pressure compensated. Does anyone have any good suggestions
> for low-flow gas meter that is pressure and temperature compensated?
>
> Also, diaphragm meters seems to be ideal for low-flow gas measurement, but I
> believe it is not ideal for biogas because of the biogas moisture content,
> which could lead to corrosion of the meter. Does anyone know of diaphragm
> meters that are built specially for biogas (i.e. with stainless steel etc.)?
>
> Thank you very much for your help.
>
> Freddy Witarsa
>
> _______________________________________________
> Digestion mailing list
>
> to Send a Message to the list, use the email address
> Digestion at bioenergylists.org
>
> to UNSUBSCRIBE or Change your List Settings use the web page
> http://lists.bioenergylists.org/mailman/listinfo/digestion_lists.bioenergylists.org
>
> for more information about digestion, see Beginner's Guide to Biogas
> http://www.adelaide.edu.au/biogas/
> and the Biogas Wiki http://biogas.wikispaces.com/
>
>
>
>
> ------------------------------
>
> Message: 3
> Date: Wed, 26 Jan 2011 10:26:45 -0700
> From: Alexander Eaton <alex at sistemabiobolsa.com>
> To: For Discussion of Anaerobic Digestion
> 	<digestion at lists.bioenergylists.org>
> Subject: Re: [Digestion] Biogas meter
> Message-ID:
> 	<AANLkTinWCuv9VOQ8K_Gu_zeWu-C_eXbV0-j0RFQ3npWJ at mail.gmail.com>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Freddy,
>
> We have used a diaphragm meter made here (Elster, BK-G 1.6), and they seem
> to available in other places as they were recently shown to work on a biogas
> project (small scale) in Peru.  This systems has a combination of latex and
> plastic components that are in contact with the gas to avoid corrosion.  We
> were able to get good results below the rated pressure, but at one point I
> was able to keep a flame lit, without the gas registering on the meter.
> That was at about 5-10 mm of water column, very very low.  This systems
> costs about $40 US.
>
> Saludos,
> A
>
> On Wed, Jan 26, 2011 at 1:07 AM, Alastair James Ward <
> Alastair.Ward at agrsci.dk> wrote:
>
>> Hi Freddy,
>>
>> I suppose you could measure temperature and pressure and correct your
>> recorded figures?
>>
>> I have not used diaphragm meters, I have heard they do not last long but
>> then I have seen some being used for months if not years with a silica gel
>> column fitted upstream of the meter. They are pretty cheap too and
>> sometimes
>> available with digital outputs for online measurement.
>>
>>
>>
>> Med venlig hilsen / Regards
>> Alastair James Ward
>>
>>
>>
>> -----Original Message-----
>> From: digestion-bounces at lists.bioenergylists.org [mailto:
>> digestion-bounces at lists.bioenergylists.org] On Behalf Of fwitarsa at umd.edu
>> Sent: 25. januar 2011 21:57
>> To: digestion at lists.bioenergylists.org
>> Subject: [Digestion] Biogas meter
>>
>> Hi there,
>>
>> My name is Freddy Witarsa and I am a student at University of Maryland in
>> the US. We are currently building biodigesters and I am designing the gas
>> collection system. I have a question regarding the biogas meters that
>> could
>> be used for measuring the amount of biogas produced. Currently, we have a
>> chinese model meter JBD2.5-SA. We are hesitant to use it because it is not
>> temperature and pressure compensated. Does anyone have any good
>> suggestions
>> for low-flow gas meter that is pressure and temperature compensated?
>>
>> Also, diaphragm meters seems to be ideal for low-flow gas measurement, but
>> I believe it is not ideal for biogas because of the biogas moisture
>> content,
>> which could lead to corrosion of the meter. Does anyone know of diaphragm
>> meters that are built specially for biogas (i.e. with stainless steel
>> etc.)?
>>
>> Thank you very much for your help.
>>
>> Freddy Witarsa
>>
>> _______________________________________________
>> Digestion mailing list
>>
>> to Send a Message to the list, use the email address
>> Digestion at bioenergylists.org
>>
>> to UNSUBSCRIBE or Change your List Settings use the web page
>> http://lists.bioenergylists.org/mailman/listinfo/digestion_lists.bioenergylists.org
>>
>> for more information about digestion, see Beginner's Guide to Biogas
>> http://www.adelaide.edu.au/biogas/
>> and the Biogas Wiki http://biogas.wikispaces.com/
>>
>>
>> _______________________________________________
>> Digestion mailing list
>>
>> to Send a Message to the list, use the email address
>> Digestion at bioenergylists.org
>>
>> to UNSUBSCRIBE or Change your List Settings use the web page
>>
>> http://lists.bioenergylists.org/mailman/listinfo/digestion_lists.bioenergylists.org
>>
>> for more information about digestion, see
>> Beginner's Guide to Biogas
>> http://www.adelaide.edu.au/biogas/
>> and the Biogas Wiki http://biogas.wikispaces.com/
>>
>>
>
>
> --
> Alexander Eaton
> Sistema Biobolsa
> IRRI-Mexico
> RedBioLAC
>
> Mex cel: (55) 11522786
> US cel: 970 275 4505
>
> alex at irrimexico.org
> alex at sistemabiobolsa.com
>
> sistemabiobolsa.com
> www.irrimexico.org
> www.redbiolac.org
> -------------- next part --------------
> An HTML attachment was scrubbed...
> URL:
> <http://lists.bioenergylists.org/pipermail/digestion_lists.bioenergylists.org/attachments/20110126/68c52aa5/attachment-0001.html>
>
> ------------------------------
>
> _______________________________________________
> Digestion mailing list
>
> to Send a Message to the list, use the email address
> Digestion at bioenergylists.org
>
> to UNSUBSCRIBE or Change your List Settings use the web page
> http://lists.bioenergylists.org/mailman/listinfo/digestion_lists.bioenergylists.org
>
> for more information about digestion, see
> Beginner's Guide to Biogas
> http://www.adelaide.edu.au/biogas/
> and the Biogas Wiki http://biogas.wikispaces.com/
>
>
>
> End of Digestion Digest, Vol 5, Issue 19
> ****************************************
>

-- 
Kind Regards,

*Sumedh Bapat*
*+919881090693 / +919879110924*