[Stoves] the 150 gasifier in operation in Vietnam (Matt Redmond)
Matthew Redmond
mredmond3 at gatech.edu
Tue Mar 6 07:54:51 CST 2012
Kevin,
You make a good point about both temperature and atmosphere being important
as to whether a material will oxidize. If there was 0% oxygen available,
oxidation would not occur even at high temperatures. However, when the
stove is turned off, the wire mesh would still be very hot, and probably
able to oxidize in atmospheric air.
Silicon Carbide seems like a reasonable mesh choice - chemically stable and
able to withstand high temperatures. It even has a higher emissivity than
stainless steels in the 0.7-10 micron wavelength range (red visible light -
mid-IR range), meaning that it will emit more EM radiation than a stainless
steel at the same temperature.
http://www.pyrometry.com/emissivity_materials.php
I was able to find some Silicon Carbide meshes using a google search for
"silicon carbide mesh". Note they are not called wire meshes, but are just
called meshes. They are a bit expensive, though.
Perhaps some inspiration can be taken from lanterns used for camping?
http://en.wikipedia.org/wiki/Gas_mantle
-Matt Redmond
On Mon, Mar 5, 2012 at 11:23 PM, <stoves-request at lists.bioenergylists.org>wrote:
> Send Stoves mailing list submissions to
> stoves at lists.bioenergylists.org
>
> To subscribe or unsubscribe via the World Wide Web, visit
>
> http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org
>
> or, via email, send a message with subject or body 'help' to
> stoves-request at lists.bioenergylists.org
>
> You can reach the person managing the list at
> stoves-owner at lists.bioenergylists.org
>
> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of Stoves digest..."
>
>
> Today's Topics:
>
> 1. Re: the 150 gasifier in operation in Vietnam (Anand Karve)
> 2. Re: the 150 gasifier in operation in Vietnam (Paul Olivier)
> 3. Re: the 150 gasifier in operation in Vietnam (Anand Karve)
> 4. Re: the 150 gasifier in operation in Vietnam (Paul Olivier)
> 5. Re: the 150 gasifier in operation in Vietnam (Kevin)
> 6. Re: the 150 gasifier in operation in Vietnam (Paul Olivier)
> 7. Re: the 150 gasifier in operation in Vietnam (Andrew C. Parker)
> 8. Re: the 150 gasifier in operation in Vietnam (Kevin)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Tue, 6 Mar 2012 11:54:04 +0800
> From: Anand Karve <adkarve at gmail.com>
> To: Discussion of biomass cooking stoves
> <stoves at lists.bioenergylists.org>
> Subject: Re: [Stoves] the 150 gasifier in operation in Vietnam
> Message-ID:
> <CACPy7SfmvGjavu+QG0YeJfgQi6FaajbzspBuaYKef-wOTsgzeg at mail.gmail.com
> >
> Content-Type: text/plain; charset="iso-8859-1"
>
> Dear Paul,
> even stainless steel is no good. At high temperature, it corrodes and
> crumbles into pieces.
> Yours
> A.D.Karve
>
> On Mon, Mar 5, 2012 at 4:03 PM, Steve Taylor
> <steve at thetaylorfamily.org.uk>wrote:
>
> >
> >
> > On 5 March 2012 02:56, Paul Olivier <paul.olivier at esrla.com> wrote:
> >
> >>
> >> I know that a tungsten wire mesh exists.
> >> But no doubt this would be too expensive.
> >>
> >>
> > Tungsten will oxidise to nothing very quickly. Probably Incoloy would be
> > ideal
> >
> > Steve
> >
> > _______________________________________________
> > Stoves mailing list
> >
> > to Send a Message to the list, use the email address
> > stoves at lists.bioenergylists.org
> >
> > to UNSUBSCRIBE or Change your List Settings use the web page
> >
> >
> http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org
> >
> > for more Biomass Cooking Stoves, News and Information see our web site:
> > http://www.bioenergylists.org/
> >
> >
> >
>
>
> --
> ***
> Dr. A.D. Karve
> Trustee & Founder President, Appropriate Rural Technology Institute (ARTI)
> -------------- next part --------------
> An HTML attachment was scrubbed...
> URL: <
> http://lists.bioenergylists.org/pipermail/stoves_lists.bioenergylists.org/attachments/20120306/5fbe23aa/attachment-0001.html
> >
>
> ------------------------------
>
> Message: 2
> Date: Tue, 6 Mar 2012 10:58:50 +0700
> From: Paul Olivier <paul.olivier at esrla.com>
> To: Discussion of biomass cooking stoves
> <stoves at lists.bioenergylists.org>
> Subject: Re: [Stoves] the 150 gasifier in operation in Vietnam
> Message-ID:
> <CAOreFvY6_NnqqWAKBTE2egbYKVrHWWSNBCNe63SRY_7d0ZpDNA at mail.gmail.com
> >
> Content-Type: text/plain; charset="iso-8859-1"
>
> A.D.,
>
> I am looking for a 446 stainless steel wire mesh.
> Have you ever worked with silicon carbide mesh?
> It is used as an emitter in thermophotovoltaics.
>
> Paul
>
> On Tue, Mar 6, 2012 at 10:54 AM, Anand Karve <adkarve at gmail.com> wrote:
>
> > Dear Paul,
> > even stainless steel is no good. At high temperature, it corrodes and
> > crumbles into pieces.
> > Yours
> > A.D.Karve
> >
> > On Mon, Mar 5, 2012 at 4:03 PM, Steve Taylor <
> steve at thetaylorfamily.org.uk
> > > wrote:
> >
> >>
> >>
> >> On 5 March 2012 02:56, Paul Olivier <paul.olivier at esrla.com> wrote:
> >>
> >>>
> >>> I know that a tungsten wire mesh exists.
> >>> But no doubt this would be too expensive.
> >>>
> >>>
> >> Tungsten will oxidise to nothing very quickly. Probably Incoloy would be
> >> ideal
> >>
> >> Steve
> >>
> >> _______________________________________________
> >> Stoves mailing list
> >>
> >> to Send a Message to the list, use the email address
> >> stoves at lists.bioenergylists.org
> >>
> >> to UNSUBSCRIBE or Change your List Settings use the web page
> >>
> >>
> http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org
> >>
> >> for more Biomass Cooking Stoves, News and Information see our web site:
> >> http://www.bioenergylists.org/
> >>
> >>
> >>
> >
> >
> > --
> > ***
> > Dr. A.D. Karve
> > Trustee & Founder President, Appropriate Rural Technology Institute
> (ARTI)
> >
> >
> >
> > _______________________________________________
> > Stoves mailing list
> >
> > to Send a Message to the list, use the email address
> > stoves at lists.bioenergylists.org
> >
> > to UNSUBSCRIBE or Change your List Settings use the web page
> >
> >
> http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org
> >
> > for more Biomass Cooking Stoves, News and Information see our web site:
> > http://www.bioenergylists.org/
> >
> >
> >
>
>
> --
> Paul A. Olivier PhD
> 27C Pham Hong Thai Street
> Dalat
> Vietnam
>
> Louisiana telephone: 1-337-447-4124 (rings Vietnam)
> Mobile: 090-694-1573 (in Vietnam)
> Skype address: Xpolivier
> http://www.esrla.com/
> -------------- next part --------------
> An HTML attachment was scrubbed...
> URL: <
> http://lists.bioenergylists.org/pipermail/stoves_lists.bioenergylists.org/attachments/20120306/e5cee431/attachment-0001.html
> >
>
> ------------------------------
>
> Message: 3
> Date: Tue, 6 Mar 2012 12:02:16 +0800
> From: Anand Karve <adkarve at gmail.com>
> To: Discussion of biomass cooking stoves
> <stoves at lists.bioenergylists.org>
> Subject: Re: [Stoves] the 150 gasifier in operation in Vietnam
> Message-ID:
> <CACPy7SfPxcjVuX-Xc_hGPuoH7F033_5=Q1oG3_c4wa1KiCeWpg at mail.gmail.com
> >
> Content-Type: text/plain; charset="iso-8859-1"
>
> Dear Paul,
> I have not worked with that grade of stainless steel and also not worked
> with silicon carbide mesh.
> Yours
> A.D.Karve
>
> On Tue, Mar 6, 2012 at 11:58 AM, Paul Olivier <paul.olivier at esrla.com
> >wrote:
>
> > A.D.,
> >
> > I am looking for a 446 stainless steel wire mesh.
> > Have you ever worked with silicon carbide mesh?
> > It is used as an emitter in thermophotovoltaics.
> >
> > Paul
> >
> > On Tue, Mar 6, 2012 at 10:54 AM, Anand Karve <adkarve at gmail.com> wrote:
> >
> >> Dear Paul,
> >> even stainless steel is no good. At high temperature, it corrodes and
> >> crumbles into pieces.
> >> Yours
> >> A.D.Karve
> >>
> >> On Mon, Mar 5, 2012 at 4:03 PM, Steve Taylor <
> >> steve at thetaylorfamily.org.uk> wrote:
> >>
> >>>
> >>>
> >>> On 5 March 2012 02:56, Paul Olivier <paul.olivier at esrla.com> wrote:
> >>>
> >>>>
> >>>> I know that a tungsten wire mesh exists.
> >>>> But no doubt this would be too expensive.
> >>>>
> >>>>
> >>> Tungsten will oxidise to nothing very quickly. Probably Incoloy would
> be
> >>> ideal
> >>>
> >>> Steve
> >>>
> >>> _______________________________________________
> >>> Stoves mailing list
> >>>
> >>> to Send a Message to the list, use the email address
> >>> stoves at lists.bioenergylists.org
> >>>
> >>> to UNSUBSCRIBE or Change your List Settings use the web page
> >>>
> >>>
> http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org
> >>>
> >>> for more Biomass Cooking Stoves, News and Information see our web
> site:
> >>> http://www.bioenergylists.org/
> >>>
> >>>
> >>>
> >>
> >>
> >> --
> >> ***
> >> Dr. A.D. Karve
> >> Trustee & Founder President, Appropriate Rural Technology Institute
> (ARTI)
> >>
> >>
> >>
> >> _______________________________________________
> >> Stoves mailing list
> >>
> >> to Send a Message to the list, use the email address
> >> stoves at lists.bioenergylists.org
> >>
> >> to UNSUBSCRIBE or Change your List Settings use the web page
> >>
> >>
> http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org
> >>
> >> for more Biomass Cooking Stoves, News and Information see our web site:
> >> http://www.bioenergylists.org/
> >>
> >>
> >>
> >
> >
> > --
> > Paul A. Olivier PhD
> > 27C Pham Hong Thai Street
> > Dalat
> > Vietnam
> >
> > Louisiana telephone: 1-337-447-4124 (rings Vietnam)
> > Mobile: 090-694-1573 (in Vietnam)
> > Skype address: Xpolivier
> > http://www.esrla.com/
> >
> > _______________________________________________
> > Stoves mailing list
> >
> > to Send a Message to the list, use the email address
> > stoves at lists.bioenergylists.org
> >
> > to UNSUBSCRIBE or Change your List Settings use the web page
> >
> >
> http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org
> >
> > for more Biomass Cooking Stoves, News and Information see our web site:
> > http://www.bioenergylists.org/
> >
> >
> >
>
>
> --
> ***
> Dr. A.D. Karve
> Trustee & Founder President, Appropriate Rural Technology Institute (ARTI)
> -------------- next part --------------
> An HTML attachment was scrubbed...
> URL: <
> http://lists.bioenergylists.org/pipermail/stoves_lists.bioenergylists.org/attachments/20120306/4197ee58/attachment-0001.html
> >
>
> ------------------------------
>
> Message: 4
> Date: Tue, 6 Mar 2012 11:12:35 +0700
> From: Paul Olivier <paul.olivier at esrla.com>
> To: Discussion of biomass cooking stoves
> <stoves at lists.bioenergylists.org>
> Subject: Re: [Stoves] the 150 gasifier in operation in Vietnam
> Message-ID:
> <CAOreFvar1C75TkTYsHmF8yS=Qw0aJ02nxsoU-rbeNaTfXSUwPA at mail.gmail.com
> >
> Content-Type: text/plain; charset="iso-8859-1"
>
> 446 stainless can handle temperatures as high as 1,200 C.
> Silicon carbide is quite cheap, and it can handle temperatures as high as
> 1,650 C.
> http://accuratus.com/silicar.html
>
> Thanks.
> Paul
>
> On Tue, Mar 6, 2012 at 11:02 AM, Anand Karve <adkarve at gmail.com> wrote:
>
> > Dear Paul,
> > I have not worked with that grade of stainless steel and also not worked
> > with silicon carbide mesh.
> > Yours
> > A.D.Karve
> >
> > On Tue, Mar 6, 2012 at 11:58 AM, Paul Olivier <paul.olivier at esrla.com
> >wrote:
> >
> >> A.D.,
> >>
> >> I am looking for a 446 stainless steel wire mesh.
> >> Have you ever worked with silicon carbide mesh?
> >> It is used as an emitter in thermophotovoltaics.
> >>
> >> Paul
> >>
> >> On Tue, Mar 6, 2012 at 10:54 AM, Anand Karve <adkarve at gmail.com> wrote:
> >>
> >>> Dear Paul,
> >>> even stainless steel is no good. At high temperature, it corrodes and
> >>> crumbles into pieces.
> >>> Yours
> >>> A.D.Karve
> >>>
> >>> On Mon, Mar 5, 2012 at 4:03 PM, Steve Taylor <
> >>> steve at thetaylorfamily.org.uk> wrote:
> >>>
> >>>>
> >>>>
> >>>> On 5 March 2012 02:56, Paul Olivier <paul.olivier at esrla.com> wrote:
> >>>>
> >>>>>
> >>>>> I know that a tungsten wire mesh exists.
> >>>>> But no doubt this would be too expensive.
> >>>>>
> >>>>>
> >>>> Tungsten will oxidise to nothing very quickly. Probably Incoloy would
> >>>> be ideal
> >>>>
> >>>> Steve
> >>>>
> >>>> _______________________________________________
> >>>> Stoves mailing list
> >>>>
> >>>> to Send a Message to the list, use the email address
> >>>> stoves at lists.bioenergylists.org
> >>>>
> >>>> to UNSUBSCRIBE or Change your List Settings use the web page
> >>>>
> >>>>
> http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org
> >>>>
> >>>> for more Biomass Cooking Stoves, News and Information see our web
> site:
> >>>> http://www.bioenergylists.org/
> >>>>
> >>>>
> >>>>
> >>>
> >>>
> >>> --
> >>> ***
> >>> Dr. A.D. Karve
> >>> Trustee & Founder President, Appropriate Rural Technology Institute
> >>> (ARTI)
> >>>
> >>>
> >>>
> >>> _______________________________________________
> >>> Stoves mailing list
> >>>
> >>> to Send a Message to the list, use the email address
> >>> stoves at lists.bioenergylists.org
> >>>
> >>> to UNSUBSCRIBE or Change your List Settings use the web page
> >>>
> >>>
> http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org
> >>>
> >>> for more Biomass Cooking Stoves, News and Information see our web
> site:
> >>> http://www.bioenergylists.org/
> >>>
> >>>
> >>>
> >>
> >>
> >> --
> >> Paul A. Olivier PhD
> >> 27C Pham Hong Thai Street
> >> Dalat
> >> Vietnam
> >>
> >> Louisiana telephone: 1-337-447-4124 (rings Vietnam)
> >> Mobile: 090-694-1573 (in Vietnam)
> >> Skype address: Xpolivier
> >> http://www.esrla.com/
> >>
> >> _______________________________________________
> >> Stoves mailing list
> >>
> >> to Send a Message to the list, use the email address
> >> stoves at lists.bioenergylists.org
> >>
> >> to UNSUBSCRIBE or Change your List Settings use the web page
> >>
> >>
> http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org
> >>
> >> for more Biomass Cooking Stoves, News and Information see our web site:
> >> http://www.bioenergylists.org/
> >>
> >>
> >>
> >
> >
> > --
> > ***
> > Dr. A.D. Karve
> > Trustee & Founder President, Appropriate Rural Technology Institute
> (ARTI)
> >
> >
> >
> > _______________________________________________
> > Stoves mailing list
> >
> > to Send a Message to the list, use the email address
> > stoves at lists.bioenergylists.org
> >
> > to UNSUBSCRIBE or Change your List Settings use the web page
> >
> >
> http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org
> >
> > for more Biomass Cooking Stoves, News and Information see our web site:
> > http://www.bioenergylists.org/
> >
> >
> >
>
>
> --
> Paul A. Olivier PhD
> 27C Pham Hong Thai Street
> Dalat
> Vietnam
>
> Louisiana telephone: 1-337-447-4124 (rings Vietnam)
> Mobile: 090-694-1573 (in Vietnam)
> Skype address: Xpolivier
> http://www.esrla.com/
> -------------- next part --------------
> An HTML attachment was scrubbed...
> URL: <
> http://lists.bioenergylists.org/pipermail/stoves_lists.bioenergylists.org/attachments/20120306/cdc3305f/attachment-0001.html
> >
>
> ------------------------------
>
> Message: 5
> Date: Tue, 6 Mar 2012 00:39:39 -0400
> From: "Kevin" <kchisholm at ca.inter.net>
> To: "Discussion of biomass cooking stoves"
> <stoves at lists.bioenergylists.org>
> Subject: Re: [Stoves] the 150 gasifier in operation in Vietnam
> Message-ID: <01679C76365247A7A4B457DF4120AFED at usera594fda0bf>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Dear Paul
>
> Why not start with simple mild steel screen, of various sizes, and test
> them to see how long they last?
>
> Exotic materials will probably last longer, but at a very much higher cost.
>
> Once you have cost and "lifetime" information, then you can make the best
> decision about what materials to use.
>
> Best wishes,
>
> Kevin
> ----- Original Message -----
> From: Paul Olivier
> To: Discussion of biomass cooking stoves
> Sent: Tuesday, March 06, 2012 12:12 AM
> Subject: Re: [Stoves] the 150 gasifier in operation in Vietnam
>
>
> 446 stainless can handle temperatures as high as 1,200 C.
> Silicon carbide is quite cheap, and it can handle temperatures as high as
> 1,650 C.
> http://accuratus.com/silicar.html
>
> Thanks.
> Paul
>
>
> On Tue, Mar 6, 2012 at 11:02 AM, Anand Karve <adkarve at gmail.com> wrote:
>
> Dear Paul,
> I have not worked with that grade of stainless steel and also not
> worked with silicon carbide mesh.
> Yours
> A.D.Karve
>
>
> On Tue, Mar 6, 2012 at 11:58 AM, Paul Olivier <paul.olivier at esrla.com>
> wrote:
>
> A.D.,
>
> I am looking for a 446 stainless steel wire mesh.
> Have you ever worked with silicon carbide mesh?
> It is used as an emitter in thermophotovoltaics.
>
> Paul
>
>
> On Tue, Mar 6, 2012 at 10:54 AM, Anand Karve <adkarve at gmail.com>
> wrote:
>
> Dear Paul,
> even stainless steel is no good. At high temperature, it corrodes
> and crumbles into pieces.
> Yours
> A.D.Karve
>
>
> On Mon, Mar 5, 2012 at 4:03 PM, Steve Taylor <
> steve at thetaylorfamily.org.uk> wrote:
>
>
>
>
> On 5 March 2012 02:56, Paul Olivier <paul.olivier at esrla.com>
> wrote:
>
>
> I know that a tungsten wire mesh exists.
> But no doubt this would be too expensive.
>
>
>
> Tungsten will oxidise to nothing very quickly. Probably Incoloy
> would be ideal
>
> Steve
>
>
>
> _______________________________________________
> Stoves mailing list
>
> to Send a Message to the list, use the email address
> stoves at lists.bioenergylists.org
>
> to UNSUBSCRIBE or Change your List Settings use the web page
>
> http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org
>
> for more Biomass Cooking Stoves, News and Information see our
> web site:
> http://www.bioenergylists.org/
>
>
>
>
>
>
> --
> ***
> Dr. A.D. Karve
> Trustee & Founder President, Appropriate Rural Technology Institute
> (ARTI)
>
>
>
> _______________________________________________
> Stoves mailing list
>
> to Send a Message to the list, use the email address
> stoves at lists.bioenergylists.org
>
> to UNSUBSCRIBE or Change your List Settings use the web page
>
> http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org
>
> for more Biomass Cooking Stoves, News and Information see our web
> site:
> http://www.bioenergylists.org/
>
>
>
>
>
>
> --
> Paul A. Olivier PhD
> 27C Pham Hong Thai Street
> Dalat
> Vietnam
>
> Louisiana telephone: 1-337-447-4124 (rings Vietnam)
> Mobile: 090-694-1573 (in Vietnam)
> Skype address: Xpolivier
> http://www.esrla.com/
>
> _______________________________________________
> Stoves mailing list
>
> to Send a Message to the list, use the email address
> stoves at lists.bioenergylists.org
>
> to UNSUBSCRIBE or Change your List Settings use the web page
>
> http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org
>
> for more Biomass Cooking Stoves, News and Information see our web
> site:
> http://www.bioenergylists.org/
>
>
>
>
>
>
> --
> ***
> Dr. A.D. Karve
> Trustee & Founder President, Appropriate Rural Technology Institute
> (ARTI)
>
>
>
>
> _______________________________________________
> Stoves mailing list
>
> to Send a Message to the list, use the email address
> stoves at lists.bioenergylists.org
>
> to UNSUBSCRIBE or Change your List Settings use the web page
>
> http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org
>
> for more Biomass Cooking Stoves, News and Information see our web site:
> http://www.bioenergylists.org/
>
>
>
>
>
>
> --
> Paul A. Olivier PhD
> 27C Pham Hong Thai Street
> Dalat
> Vietnam
>
> Louisiana telephone: 1-337-447-4124 (rings Vietnam)
> Mobile: 090-694-1573 (in Vietnam)
> Skype address: Xpolivier
> http://www.esrla.com/
>
>
>
>
> ------------------------------------------------------------------------------
>
>
> _______________________________________________
> Stoves mailing list
>
> to Send a Message to the list, use the email address
> stoves at lists.bioenergylists.org
>
> to UNSUBSCRIBE or Change your List Settings use the web page
>
> http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org
>
> for more Biomass Cooking Stoves, News and Information see our web site:
> http://www.bioenergylists.org/
>
>
>
>
>
> ------------------------------------------------------------------------------
>
>
> No virus found in this message.
> Checked by AVG - www.avg.com
> Version: 2012.0.1913 / Virus Database: 2114/4852 - Release Date: 03/05/12
> -------------- next part --------------
> An HTML attachment was scrubbed...
> URL: <
> http://lists.bioenergylists.org/pipermail/stoves_lists.bioenergylists.org/attachments/20120306/3aa72940/attachment-0001.html
> >
>
> ------------------------------
>
> Message: 6
> Date: Tue, 6 Mar 2012 12:00:41 +0700
> From: Paul Olivier <paul.olivier at esrla.com>
> To: Discussion of biomass cooking stoves
> <stoves at lists.bioenergylists.org>
> Subject: Re: [Stoves] the 150 gasifier in operation in Vietnam
> Message-ID:
> <CAOreFvZByxEciQ=PA_uEXGG2+kXWUcoDQa51VzogA3jO=UGreQ at mail.gmail.com
> >
> Content-Type: text/plain; charset="iso-8859-1"
>
> Kevin,
>
> I do not think that normal mild steel wire mesh would make it through a
> single gasifier run.
> I'm afraid that it has to be something "exotic".
> This wire mesh really gets hot.
> Someone measured the temperature about 4 inches above the dome.
> When the probe reached 500 C, he stopped.
>
> Thanks.
> Paul
>
> On Tue, Mar 6, 2012 at 11:39 AM, Kevin <kchisholm at ca.inter.net> wrote:
>
> > **
> > Dear Paul
> >
> > Why not start with simple mild steel screen, of various sizes, and test
> > them to see how long they last?
> >
> > Exotic materials will probably last longer, but at a very much higher
> > cost.
> >
> > Once you have cost and "lifetime" information, then you can make the best
> > decision about what materials to use.
> >
> > Best wishes,
> >
> > Kevin
> >
> > ----- Original Message -----
> > *From:* Paul Olivier <paul.olivier at esrla.com>
> > *To:* Discussion of biomass cooking stoves<
> stoves at lists.bioenergylists.org>
> > *Sent:* Tuesday, March 06, 2012 12:12 AM
> > *Subject:* Re: [Stoves] the 150 gasifier in operation in Vietnam
> >
> > 446 stainless can handle temperatures as high as 1,200 C.
> > Silicon carbide is quite cheap, and it can handle temperatures as high as
> > 1,650 C.
> > http://accuratus.com/silicar.html
> >
> > Thanks.
> > Paul
> >
> > On Tue, Mar 6, 2012 at 11:02 AM, Anand Karve <adkarve at gmail.com> wrote:
> >
> >> Dear Paul,
> >> I have not worked with that grade of stainless steel and also not worked
> >> with silicon carbide mesh.
> >> Yours
> >> A.D.Karve
> >>
> >> On Tue, Mar 6, 2012 at 11:58 AM, Paul Olivier <paul.olivier at esrla.com
> >wrote:
> >>
> >>> A.D.,
> >>>
> >>> I am looking for a 446 stainless steel wire mesh.
> >>> Have you ever worked with silicon carbide mesh?
> >>> It is used as an emitter in thermophotovoltaics.
> >>>
> >>> Paul
> >>>
> >>> On Tue, Mar 6, 2012 at 10:54 AM, Anand Karve <adkarve at gmail.com>
> wrote:
> >>>
> >>>> Dear Paul,
> >>>> even stainless steel is no good. At high temperature, it corrodes and
> >>>> crumbles into pieces.
> >>>> Yours
> >>>> A.D.Karve
> >>>>
> >>>> On Mon, Mar 5, 2012 at 4:03 PM, Steve Taylor <
> >>>> steve at thetaylorfamily.org.uk> wrote:
> >>>>
> >>>>>
> >>>>>
> >>>>> On 5 March 2012 02:56, Paul Olivier <paul.olivier at esrla.com> wrote:
> >>>>>
> >>>>>>
> >>>>>> I know that a tungsten wire mesh exists.
> >>>>>> But no doubt this would be too expensive.
> >>>>>>
> >>>>>>
> >>>>> Tungsten will oxidise to nothing very quickly. Probably Incoloy would
> >>>>> be ideal
> >>>>>
> >>>>> Steve
> >>>>>
> >>>>> _______________________________________________
> >>>>> Stoves mailing list
> >>>>>
> >>>>> to Send a Message to the list, use the email address
> >>>>> stoves at lists.bioenergylists.org
> >>>>>
> >>>>> to UNSUBSCRIBE or Change your List Settings use the web page
> >>>>>
> >>>>>
> http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org
> >>>>>
> >>>>> for more Biomass Cooking Stoves, News and Information see our web
> >>>>> site:
> >>>>> http://www.bioenergylists.org/
> >>>>>
> >>>>>
> >>>>>
> >>>>
> >>>>
> >>>> --
> >>>> ***
> >>>> Dr. A.D. Karve
> >>>> Trustee & Founder President, Appropriate Rural Technology Institute
> >>>> (ARTI)
> >>>>
> >>>>
> >>>>
> >>>> _______________________________________________
> >>>> Stoves mailing list
> >>>>
> >>>> to Send a Message to the list, use the email address
> >>>> stoves at lists.bioenergylists.org
> >>>>
> >>>> to UNSUBSCRIBE or Change your List Settings use the web page
> >>>>
> >>>>
> http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org
> >>>>
> >>>> for more Biomass Cooking Stoves, News and Information see our web
> site:
> >>>> http://www.bioenergylists.org/
> >>>>
> >>>>
> >>>>
> >>>
> >>>
> >>> --
> >>> Paul A. Olivier PhD
> >>> 27C Pham Hong Thai Street
> >>> Dalat
> >>> Vietnam
> >>>
> >>> Louisiana telephone: 1-337-447-4124 (rings Vietnam)
> >>> Mobile: 090-694-1573 (in Vietnam)
> >>> Skype address: Xpolivier
> >>> http://www.esrla.com/
> >>>
> >>> _______________________________________________
> >>> Stoves mailing list
> >>>
> >>> to Send a Message to the list, use the email address
> >>> stoves at lists.bioenergylists.org
> >>>
> >>> to UNSUBSCRIBE or Change your List Settings use the web page
> >>>
> >>>
> http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org
> >>>
> >>> for more Biomass Cooking Stoves, News and Information see our web
> site:
> >>> http://www.bioenergylists.org/
> >>>
> >>>
> >>>
> >>
> >>
> >> --
> >> ***
> >> Dr. A.D. Karve
> >> Trustee & Founder President, Appropriate Rural Technology Institute
> (ARTI)
> >>
> >>
> >>
> >> _______________________________________________
> >> Stoves mailing list
> >>
> >> to Send a Message to the list, use the email address
> >> stoves at lists.bioenergylists.org
> >>
> >> to UNSUBSCRIBE or Change your List Settings use the web page
> >>
> >>
> http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org
> >>
> >> for more Biomass Cooking Stoves, News and Information see our web site:
> >> http://www.bioenergylists.org/
> >>
> >>
> >>
> >
> >
> > --
> > Paul A. Olivier PhD
> > 27C Pham Hong Thai Street
> > Dalat
> > Vietnam
> >
> > Louisiana telephone: 1-337-447-4124 (rings Vietnam)
> > Mobile: 090-694-1573 (in Vietnam)
> > Skype address: Xpolivier
> > http://www.esrla.com/
> >
> > ------------------------------
> >
> > _______________________________________________
> > Stoves mailing list
> >
> > to Send a Message to the list, use the email address
> > stoves at lists.bioenergylists.org
> >
> > to UNSUBSCRIBE or Change your List Settings use the web page
> >
> >
> http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org
> >
> > for more Biomass Cooking Stoves, News and Information see our web site:
> > http://www.bioenergylists.org/
> >
> > ------------------------------
> >
> > No virus found in this message.
> > Checked by AVG - www.avg.com
> > Version: 2012.0.1913 / Virus Database: 2114/4852 - Release Date: 03/05/12
> >
> >
> > _______________________________________________
> > Stoves mailing list
> >
> > to Send a Message to the list, use the email address
> > stoves at lists.bioenergylists.org
> >
> > to UNSUBSCRIBE or Change your List Settings use the web page
> >
> >
> http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org
> >
> > for more Biomass Cooking Stoves, News and Information see our web site:
> > http://www.bioenergylists.org/
> >
> >
> >
>
>
> --
> Paul A. Olivier PhD
> 27C Pham Hong Thai Street
> Dalat
> Vietnam
>
> Louisiana telephone: 1-337-447-4124 (rings Vietnam)
> Mobile: 090-694-1573 (in Vietnam)
> Skype address: Xpolivier
> http://www.esrla.com/
> -------------- next part --------------
> An HTML attachment was scrubbed...
> URL: <
> http://lists.bioenergylists.org/pipermail/stoves_lists.bioenergylists.org/attachments/20120306/02c47922/attachment-0001.html
> >
>
> ------------------------------
>
> Message: 7
> Date: Mon, 05 Mar 2012 22:11:23 -0700
> From: "Andrew C. Parker" <acparker at xmission.com>
> To: "Discussion of biomass cooking stoves"
> <stoves at lists.bioenergylists.org>
> Subject: Re: [Stoves] the 150 gasifier in operation in Vietnam
> Message-ID: <op.waqgo9fuuoov7l at user-8ezctxe031>
> Content-Type: text/plain; charset=iso-8859-15; format=flowed;
> delsp=yes
>
> If I understood the patents, the material needs not only to be refractory,
> but also to radiate heat in the desired frequency (turns red with heat).
> Patent US4452225 used Monel. Patent US6612834 requires "an inoxidizable,
> non-porous refractory material formed to be permeable and non-porous and
> which turns red with heat." Patent US7631640 only describes high
> temperature metal (No mention of heated color).
>
> Also, could someone who knows more about these things than I (most of you,
> I'd wager) please review US6612834? It can be read at:
> <
> http://www.google.com/patents?id=DjoNAAAAEBAJ&printsec=frontcover&dq=US6612834&hl=en&sa=X&ei=sZdVT471HaaviAKnuOi2Bw&ved=0CDQQ6AEwAA
> >,
> if the url doesn't work, just type the patent number into google to get to
> google patents.
>
> I am curious about the inventor's explanation of his use of an amplifying
> outer enclosure (labeled "5"). It starts at Column 8 line 59 and goes
> through Column 9 line 57. The goal being to convert as much heat as
> possible into IR radiation.
>
>
> On Mon, 05 Mar 2012 21:12:35 -0700, Paul Olivier <paul.olivier at esrla.com>
> wrote:
>
> > 446 stainless can handle temperatures as high as 1,200 C.
> > Silicon carbide is quite cheap, and it can handle temperatures as high as
> > 1,650 C.
> > http://accuratus.com/silicar.html
> >
> > Thanks.
> > Paul
>
>
>
> ------------------------------
>
> Message: 8
> Date: Tue, 6 Mar 2012 02:23:24 -0400
> From: "Kevin" <kchisholm at ca.inter.net>
> To: "Discussion of biomass cooking stoves"
> <stoves at lists.bioenergylists.org>
> Subject: Re: [Stoves] the 150 gasifier in operation in Vietnam
> Message-ID: <93A22F3DD3BD4FEE91ED724C5DD2D6A9 at usera594fda0bf>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Dear Paul
> ----- Original Message -----
> From: Paul Olivier
> To: Discussion of biomass cooking stoves
> Sent: Tuesday, March 06, 2012 1:00 AM
> Subject: Re: [Stoves] the 150 gasifier in operation in Vietnam
>
>
> Kevin,
>
> I do not think that normal mild steel wire mesh would make it through a
> single gasifier run.
>
> # Certainly, "red hot mild steel" in an oxidizing air atmosphere will
> scale up and fail quickly. However, you don't have that.... you have a
> combustion zone atmosphere. It is very simple and cheap[ to try. Try it,
> and let the screen itself tell you that it needs to be of higher quality.
>
> I'm afraid that it has to be something "exotic".
>
> # Let the system prove to you that it needs to be exotic. :-)
>
> This wire mesh really gets hot.
>
> # "Hot" is one thing, but "oxdizing atmosphere" is another. If the
> atmosphere the screen "sees" is "adequately reducing", then mild steel
> might be an economically good solution. On the other hand, as the
> atmosphere becomes increasingly oxidizing, then the more exotic materials
> are required.
>
> Someone measured the temperature about 4 inches above the dome.
> When the probe reached 500 C, he stopped.
>
> # A material that would fail in air at 500 C might be quite acceptable in
> a reducing atmosphere at 500 C
>
> # The problem is one of Temperature AND Atmosphere. You could probably
> reduce costs safely, with a test program that confirmed the minimum quality
> screen material that would do an acceptable job.
> Best wishes,
>
> Kevin
>
> Thanks.
> Paul
>
>
> On Tue, Mar 6, 2012 at 11:39 AM, Kevin <kchisholm at ca.inter.net> wrote:
>
> Dear Paul
>
> Why not start with simple mild steel screen, of various sizes, and test
> them to see how long they last?
>
> Exotic materials will probably last longer, but at a very much higher
> cost.
>
> Once you have cost and "lifetime" information, then you can make the
> best decision about what materials to use.
>
> Best wishes,
>
> Kevin
> ----- Original Message -----
> From: Paul Olivier
> To: Discussion of biomass cooking stoves
> Sent: Tuesday, March 06, 2012 12:12 AM
> Subject: Re: [Stoves] the 150 gasifier in operation in Vietnam
>
>
> 446 stainless can handle temperatures as high as 1,200 C.
> Silicon carbide is quite cheap, and it can handle temperatures as
> high as 1,650 C.
> http://accuratus.com/silicar.html
>
> Thanks.
> Paul
>
>
> On Tue, Mar 6, 2012 at 11:02 AM, Anand Karve <adkarve at gmail.com>
> wrote:
>
> Dear Paul,
> I have not worked with that grade of stainless steel and also not
> worked with silicon carbide mesh.
> Yours
> A.D.Karve
>
>
> On Tue, Mar 6, 2012 at 11:58 AM, Paul Olivier <
> paul.olivier at esrla.com> wrote:
>
> A.D.,
>
> I am looking for a 446 stainless steel wire mesh.
> Have you ever worked with silicon carbide mesh?
> It is used as an emitter in thermophotovoltaics.
>
> Paul
>
>
> On Tue, Mar 6, 2012 at 10:54 AM, Anand Karve <adkarve at gmail.com>
> wrote:
>
> Dear Paul,
> even stainless steel is no good. At high temperature, it
> corrodes and crumbles into pieces.
> Yours
> A.D.Karve
>
>
> On Mon, Mar 5, 2012 at 4:03 PM, Steve Taylor <
> steve at thetaylorfamily.org.uk> wrote:
>
>
>
>
> On 5 March 2012 02:56, Paul Olivier <paul.olivier at esrla.com>
> wrote:
>
>
> I know that a tungsten wire mesh exists.
> But no doubt this would be too expensive.
>
>
>
> Tungsten will oxidise to nothing very quickly. Probably
> Incoloy would be ideal
>
> Steve
>
>
>
> _______________________________________________
> Stoves mailing list
>
> to Send a Message to the list, use the email address
> stoves at lists.bioenergylists.org
>
> to UNSUBSCRIBE or Change your List Settings use the web page
>
> http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org
>
> for more Biomass Cooking Stoves, News and Information see
> our web site:
> http://www.bioenergylists.org/
>
>
>
>
>
>
> --
> ***
> Dr. A.D. Karve
> Trustee & Founder President, Appropriate Rural Technology
> Institute (ARTI)
>
>
>
> _______________________________________________
> Stoves mailing list
>
> to Send a Message to the list, use the email address
> stoves at lists.bioenergylists.org
>
> to UNSUBSCRIBE or Change your List Settings use the web page
>
> http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org
>
> for more Biomass Cooking Stoves, News and Information see our
> web site:
> http://www.bioenergylists.org/
>
>
>
>
>
>
> --
> Paul A. Olivier PhD
> 27C Pham Hong Thai Street
> Dalat
> Vietnam
>
> Louisiana telephone: 1-337-447-4124 (rings Vietnam)
> Mobile: 090-694-1573 (in Vietnam)
> Skype address: Xpolivier
> http://www.esrla.com/
>
> _______________________________________________
> Stoves mailing list
>
> to Send a Message to the list, use the email address
> stoves at lists.bioenergylists.org
>
> to UNSUBSCRIBE or Change your List Settings use the web page
>
> http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org
>
> for more Biomass Cooking Stoves, News and Information see our
> web site:
> http://www.bioenergylists.org/
>
>
>
>
>
>
> --
> ***
> Dr. A.D. Karve
> Trustee & Founder President, Appropriate Rural Technology Institute
> (ARTI)
>
>
>
>
> _______________________________________________
> Stoves mailing list
>
> to Send a Message to the list, use the email address
> stoves at lists.bioenergylists.org
>
> to UNSUBSCRIBE or Change your List Settings use the web page
>
> http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org
>
> for more Biomass Cooking Stoves, News and Information see our web
> site:
> http://www.bioenergylists.org/
>
>
>
>
>
>
> --
> Paul A. Olivier PhD
> 27C Pham Hong Thai Street
> Dalat
> Vietnam
>
> Louisiana telephone: 1-337-447-4124 (rings Vietnam)
> Mobile: 090-694-1573 (in Vietnam)
> Skype address: Xpolivier
> http://www.esrla.com/
>
>
>
> --------------------------------------------------------------------------
>
>
> _______________________________________________
> Stoves mailing list
>
> to Send a Message to the list, use the email address
> stoves at lists.bioenergylists.org
>
> to UNSUBSCRIBE or Change your List Settings use the web page
>
> http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org
>
> for more Biomass Cooking Stoves, News and Information see our web
> site:
> http://www.bioenergylists.org/
>
>
>
>
> --------------------------------------------------------------------------
>
>
> No virus found in this message.
> Checked by AVG - www.avg.com
> Version: 2012.0.1913 / Virus Database: 2114/4852 - Release Date:
> 03/05/12
>
>
>
>
> _______________________________________________
> Stoves mailing list
>
> to Send a Message to the list, use the email address
> stoves at lists.bioenergylists.org
>
> to UNSUBSCRIBE or Change your List Settings use the web page
>
> http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org
>
> for more Biomass Cooking Stoves, News and Information see our web site:
> http://www.bioenergylists.org/
>
>
>
>
>
>
> --
> Paul A. Olivier PhD
> 27C Pham Hong Thai Street
> Dalat
> Vietnam
>
> Louisiana telephone: 1-337-447-4124 (rings Vietnam)
> Mobile: 090-694-1573 (in Vietnam)
> Skype address: Xpolivier
> http://www.esrla.com/
>
>
>
>
> ------------------------------------------------------------------------------
>
>
> _______________________________________________
> Stoves mailing list
>
> to Send a Message to the list, use the email address
> stoves at lists.bioenergylists.org
>
> to UNSUBSCRIBE or Change your List Settings use the web page
>
> http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org
>
> for more Biomass Cooking Stoves, News and Information see our web site:
> http://www.bioenergylists.org/
>
>
>
>
>
> ------------------------------------------------------------------------------
>
>
> No virus found in this message.
> Checked by AVG - www.avg.com
> Version: 2012.0.1913 / Virus Database: 2114/4852 - Release Date: 03/05/12
> -------------- next part --------------
> An HTML attachment was scrubbed...
> URL: <
> http://lists.bioenergylists.org/pipermail/stoves_lists.bioenergylists.org/attachments/20120306/e6147ec2/attachment.html
> >
>
> ------------------------------
>
> _______________________________________________
> Stoves mailing list
>
> to Send a Message to the list, use the email address
> stoves at lists.bioenergylists.org
>
> to UNSUBSCRIBE or Change your List Settings use the web page
>
> http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org
>
>
> for more Biomass Cooking Stoves, News and Information see our web site:
> http://www.bioenergylists.org/
>
>
> End of Stoves Digest, Vol 19, Issue 11
> **************************************
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.bioenergylists.org/pipermail/stoves_lists.bioenergylists.org/attachments/20120306/98b210fc/attachment.html>
More information about the Stoves
mailing list