[Stoves] Cajun Rocket Pot/ capacitive discharge stud weldie

[Dean Still]

Hi Lanny,

We tested a couple of pots with fins but the space between the fins clogged
up quickly with soot, a good insulator.

Best,

Dean

On Sun, Jul 28, 2013 at 5:21 AM, Lanny Henson <lannych at bellsouth.net> wrote:

>
>  Lanny have you seen capacitive discharge stud welding?
>>
>
> Yes I have a stud welder but I did not realize it would weld dissimilar
> metals especially aluminum to anything else.
>
> Stud welding is very finicky and will leave a blemish on the opposite side
> of thin metal.
>
> When a stud weld fails you have to grind the surface to clean it up before
> rewelding.. How are you going to do that if it is between the other studs?
>
> Attaching studs, fins or anything to a pot is going to be problematic, but
> attaching something to the pot holder may be practical. The heat transfer
> may not be as good as having something attached to the pot but it could
> possibly improve the heat transfer.
>
> Lanny Henson
>
> ----- Original Message ----- From: <ajheggie at gmail.com>
> To: "Discussion of biomass cooking stoves" <stoves at lists.bioenergylists.**
> org <stoves at lists.bioenergylists.org>>
> Sent: Sunday, July 28, 2013 5:23 AM
> Subject: Re: [Stoves] Cajun Rocket Pot
>
>
>  [Default] On Sat, 27 Jul 2013 20:48:02 -0400,"Lanny Henson"
>> <lannych at bellsouth.net> wrote:
>>
>>  I like creative people and take no pleasure criticizing their work but
>>> it is going to be too expensive and difficult to make with all the pegs.
>>>
>>
>> Lanny have you seen capacitive discharge stud welding? This would
>> allow welding of dissimilar metals to the pot in any pattern. I have
>> no idea of costs.
>>
>> Have you done heat transfer tests with your 4mm aluminium pot compared
>> with the thinner stainless one? Stainless is a notoriously poor
>> conductor of heat and theoretically would need to be just under a
>> tenth of the thickness of aluminium for the same conductivity, but I
>> do use stainless pots at home.
>>
>> Finally can you explain the difference between a vat and a pot?
>>
>> Paul I do consider this to be important because biomass stoves have an
>> inherent problem with heat transfer compared with natural gas or LPG
>> so improvements in heat exchange will have high benefits.
>>
>> AJH
>>
>
>
>
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