[Stoves] More about concentrators.

[Anderson, Paul]

Julien,    (and to the Stoves Listserv, and for posting at my website  www.drtlud.com/eposts<http://www.drtlud.com/eposts>   )

Interesting.
Are the nozzles with slanted walls (like in a funnel) or with straight sides?    What diameters at each end for what sized of TLUD gasifiers?

Paul

Doc / Dr TLUD / Paul S. Anderson, PhD
Exec. Dir. of Juntos Energy Solutions NFP
Email:  psanders at ilstu.edu<mailto:psanders at ilstu.edu>       Skype:   paultlud
Phone:  Office: 309-452-7072    Mobile: 309-531-4434
Website:   www.drtlud.com<http://www.drtlud.com>

From: Julien Winter <winter.julien at gmail.com>
Sent: Thursday, March 28, 2019 8:31 AM
To: Norman Baker <ntbakerphd at gmail.com>

Hi Norm;

Instead of a concentrator ring, try a nozzle.    A nozzle brings the burning gases together without the shape edges of a concentrator ring.   The sharp edges could generate soot.  A nozzle has smooth edges.   TLUD nozzles are being manufactured, but they are being misused!!   People are turning them upside down and using them to load mason jars with food.   So, you can find TLUD nozzels on the shelves for food canning supplies in hardware stores.

The reason why I got into the stove burner design business about five years ago was because when I used concentrator rings, I got deposits on the bottom of pots.

Cheers,
Julien.



On Thu, Mar 28, 2019 at 1:47 AM Norman Baker <ntbakerphd at gmail.com<mailto:ntbakerphd at gmail.com>> wrote:
Paul;

I assume you mean the diameter of the stack or combustor? In prior tests with concentrator rings, a whole that has a diameter of 70% of the stack seem to be adequate. Lately, I have been going to about an 80% diameter.  In one publication I read the stack diameter should be at least 60% of the feedstock barrel diameter. Otherwise the time needed for gases to exit the combustor became too fast and hence too short for complete combustion. Is this your experience? And how about the rest of you chiming in on this.

Norm

On Wed, Mar 27, 2019 at 8:05 PM Anderson, Paul <psanders at ilstu.edu<mailto:psanders at ilstu.edu>> wrote:
Norm,

In general, the diameter of the hole is about half of the diameter.   But there might not be any visible (noticeable) impact if reduced or enlarge 10 to 20% of the size of the  hole.  Trial and error are your best bets to get this refined.

I look forward to hearing of your results.

Paul


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