[Stoves] the 150 gasifier in operation in Vietnam (Matt Redmond)

Thu Mar 8 19:34:07 CST 2012

FWIW, I see these ceramic elements in many small gas cartridge cooking 
stoves on sale in Taiwan for the outdoor market. Though no doubt the 
criterion for acceptable durability is different than it would be for a 
stove intended for daily use.

Robert Taylor

----- Original Message ----- 
From: "Andrew C. Parker" <acparker at xmission.com>
To: "Discussion of biomass cooking stoves" <stoves at lists.bioenergylists.org>
Sent: Friday, March 09, 2012 9:23 AM
Subject: Re: [Stoves] the 150 gasifier in operation in Vietnam (Matt 
Redmond)

> Keep in mind the environment you will be using the ceramics in.  Will it 
> survive liquid being spilled on it?  For a heating stove there shouldn't 
> be a problem.
>
>
> On Thu, 08 Mar 2012 18:10:41 -0700, Paul Olivier <paul.olivier at esrla.com> 
> wrote:
>
>> Ron,
>>
>> I think that this is what I need:
>> http://www.hceramic.com/products/Liquefied_gas_stove_slice/
>> You found it.
>> Thanks.
>>
>> Paul
>>
>> On Fri, Mar 9, 2012 at 7:42 AM, Paul Olivier <paul.olivier at esrla.com> 
>> wrote:
>>
>>> Very good, Ron.
>>>
>>> Paul
>>>
>>>
>>> On Fri, Mar 9, 2012 at 7:21 AM, <rongretlarson at comcast.net> wrote:
>>>
>>>> Paul, Matt, list:
>>>>
>>>>    I like your (earlier) idea of a ceramic "strainer".   You might want
>>>> to start by doing more googling on the topic of "ceramic foam" - which
>>>> seems to be a relatively new sub-discipline of the ceramic industry. 
>>>> The
>>>> "foam" companies seem to be able to produce a material which can serve 
>>>> as a
>>>> strainer (open cell structure, not closed) - which will allow the hot 
>>>> gases
>>>> to flow through the foam.
>>>>
>>>>   Here is one example of a group explaining this sort of work:
>>>>          http://www.madehow.com/Volume-5/Ceramic-Filter.html#b
>>>>
>>>>    There are plenty of companies doing this "foam" work - to be found 
>>>> via
>>>> googling.
>>>>
>>>>   Following Matt's suggestions below,  there may be a place also for
>>>> "rock wool" - vs glass fiber (to get higher temp capability.
>>>>
>>>> If you use metal (as below),  I think a thin ceramic coating might help
>>>> on longevity, if the coating is thin enough.  Will be hard to match
>>>> coefficients of thermal expansion, but may be possible .
>>>>
>>>> Ron
>>>>
>>>> ------------------------------
>>>> *From: *"Paul Olivier" <paul.olivier at esrla.com>
>>>> *To: *mredmond3 at gatech.edu
>>>> *Cc: *"Discussion of biomass cooking stoves" <
>>>> stoves at lists.bioenergylists.org>
>>>> *Sent: *Thursday, March 8, 2012 4:54:46 PM
>>>> *Subject: *Re: [Stoves] the 150 gasifier in operation in Vietnam (Matt
>>>> Redmond)
>>>>
>>>>
>>>> Matt,
>>>>
>>>> One way to solve the problem of what material to use in a wire mesh 
>>>> dome
>>>>  is to view the wire mesh as a disposable item that might last but a 
>>>> few
>>>> months.
>>>> I found an easy way to insert a 304 stainless steel wire mesh disk (30
>>>> mesh) into a rigid receiving structure that is dome-shaped.
>>>> When a flat wire mesh disk is pushed into the shape of a dome, it 
>>>> exerts
>>>> a lot of pressure against the receiving structure.
>>>> Nothing has to be welded.
>>>> When it wears out, it is pulled out, and another disk is put in its 
>>>> place.
>>>>
>>>> Thanks.
>>>> Paul
>>>>
>>>> On Wed, Mar 7, 2012 at 7:44 PM, Matthew Redmond 
>>>> <mredmond3 at gatech.edu>wrote:
>>>>
>>>>> Ron, List,
>>>>>
>>>>> Interesting find. You reported that the silicon carbide meshes for
>>>>> drywall sanding are really just paper meshes coated with silicon 
>>>>> carbide.
>>>>>
>>>>> I was trying to think of other materials that can handle high
>>>>> temperatures and ceramics came to mind. Ceramics are often used in 
>>>>> metal
>>>>> casting processes. Aluminum Oxide, or even some sorts of fiberglass 
>>>>> have
>>>>> high working temperatures.  Ceramics generally have higher emissivity 
>>>>> than
>>>>> metals (~ 0.7 I think).
>>>>>
>>>>> It looks like fiberglass meshes are often used to filter molten 
>>>>> aluminum
>>>>> and iron for casting operations.  Perhaps something like this would 
>>>>> have
>>>>> longer lifetimes? Again, cost may become a big issue, but here are 2 
>>>>> that I
>>>>> found:
>>>>>
>>>>> http://www.ecplaza.net/trade-leads-seller/fiberglass-mesh-for-aluminium-filtration--6816138.html
>>>>> http://www.king-in-china.com/productview.asp?id=954
>>>>>
>>>>> Just throwing a few more ideas out there.
>>>>>
>>>>> -Matt Redmond
>>>>>
>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>> --
>>>> 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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>>>
>>>
>>> --
>>> 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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