[Stoves] the 150 gasifier in operation in Vietnam

[Kevin]

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



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      -- 
      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/

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    -- 
    ***
    Dr. A.D. Karve
    Trustee & Founder President, Appropriate Rural Technology Institute (ARTI)




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  -- 
  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/



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