[Stoves] Concentrators in ND TLUDs

[Paul Anderson]

Martin,

It is a "what works best" approach.   There is substantial leeway, but 
limits.   With a 6 or 7 inch fuel cylinder, the concentrator hole is 
normally 3 inches.   2.5 to 3.5 seems fine.   But 2 or 4 inch diameters 
do not work well.

As with so many TLUD topics, there are great opportunities for some 
serious research about the concentrator.

I think that the "restraining" of the flow is NOT very important.   Take 
off the top of my Quad or Champion TLUDs, and the fire does not 
increase.   Instead, it "drifts" across the entire diameter.

Last day in Uganda on this trip.   I need to pack my 150 pound of 
checked baggage, including many kilos of Jatropha seeds that I 
pre-inspect before taking them to inspection by the USA agriculture 
people at the airport.

Paul

Paul S. Anderson, PhD  aka "Dr TLUD"
Email:  psanders at ilstu.edu   Skype: paultlud  Phone: +1-309-452-7072
Website:  www.drtlud.com

On 2/24/2013 3:08 PM, Boll, Martin Dr. wrote:
> Paul, Paal, Crispin and all,
>
> A lot of time ago I asked myself if "diaphragm" by  T-LUDs could be an even adequate name instead of concentrator-disk.
> - That expression would lay the accent on restraining the flow, which I guess, could be as well of importance as concentration.
> - Just a thought on the function, not a suggestion to change the name of the disk-.
>
> Regards
> Martin
>
> P.S. the cross-section ratio:  hole to metal-disk is _always_ 1 to 1 ?
>   - That means: The radius of hole- and disk-diameter differ by the factor root of 2 .
>
> By all described T-LUDs  I saw this ratio; or are there other/different ratios ?
> Is there a _simple to understand_ explanation for that ratio, beside "that works best" ?
>
>
>
>   
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