[Stoves] Powering a TLUD Fan

[Boll, Martin Dr.]

Andrew, thanks for reminding, and
Erin, thanks for re-entering my old proposals and pictures to the discussion of the stovers!


Out of my view draft for a stove should be divided into:
1. A small amount of sufficient high pressured air for primary air.
2. A bigger amount  of low pressured air for secondary air. (recently mentioned in the discussion 5 times the amount  of primary air)

ad 1. 
When the primary air has a pressure that is remarkable higher than the pressure-loss made by the burning-chamber, ashes, etc. the amount can be determined/achieved by a variable "stenosis" (resistance). By that, the amount does not change much by different resistances  in the burning-chamber.
In older anesthesia-apparatus the administration of all the fresh gasses were given and measured in liters per minute ( approx. possible setting from 100ml up to 10 liters per minute). 
The volume was measured by a rotameter. ( a small ball flying by the gass-streamin in a cone-shaped graduated glass-tube, indicating the gas-flow). The fresh-gas-flow did not change remarkably within the artificial respiratory pressure-changes ( maximal pressure differences between 0 cm and 40cm water-column)
For stove-research-experiments a rotameter would be important, for simple use there could be only a quenching-clamp in the primary-air-tube.

ad 2.
The secondary air could be made by a simple (low-pressure) multi-fin-axial-fan ( propeller-like ) which transports the air in direction of the axis.
The radial-fans dealing with a centrifugal air-stream make some more pressure.

- Erin digged out my old low-tech-proposal the Malot-rotor, -I guess, when it would be placed in a housing, it could make a (slightly) higher pressure than the computer-fans.
But I doubt it will do fine for primary air.

Bellows:
Could make sufficient pressure for primary-air.
Andrew, I don't know whether I wrote about double-way-bellows in that time and about connected and phase-shifted bellows.
I think, to get a reasonable continuous flow, there should be at least one double-way-bellows connected to a flow-egalising air-bag. 

Two small phase-shifted double-bellows, could possibly do the job without an connected air-bag. The phase-shifting is no problem; the movement can be done by hand or feet, without hurry.

Funny to be reminded to those old low-tech ideas. -There are still others in my mind :-)

Regards

Martin