[Stoves] Variable Speed Stove Fan SIMPLIFIED

Tue Dec 5 13:21:17 CST 2006

Hi Some more Jeff!!

Yes -- in the past Kevin and I were the Chimney promoting people as well --
I use that system on my process furnaces here -- one for drying the coconut
gratings -- the other for boiling down cane juice.

I developed (and this is years ago now) a very efficient and economic way
to build a chimney stack -- even in 3rd world.

I use regular thin gauge -- cheap sheet metal grooved roofing -- 16 ft
length works just fine -- roll it and pop rivet it!

But -- back to this present mission --

Jeff -- your HydroFan has great possibilities of being the correct answer
-- the pumping of the water can be easily accomplished in numerous ways
using steam.

In fact -- this was how the first steam engines came about.

Take a look at this Url:

http://www.history.rochester.edu/steam/thurston/1878/Chapter1.html

Specifically:

Fig. 5.De Caus's Apparatus, A. D. 1605.

In 1615, Salomon de Caus, who had been an engineer and architect under
Louis XIII. of France, and later in the employ of the English Prince of
Wales, published a work at Frankfort, entitled " Les Raisons des Forces
Mouvantes, avec diverses machines tant utile que plaisante," in which he
illustrated his proposition, " Water will, by the aid of fire, mount higher
than its source," by describing a machine designed to raise water by the
expanding power of steam.

In the sketch here given (Fig. 5), and which is copied from the original in
" Les Raisons des Forces Mouvantes," etc., A is the copper ball containing
water; in, the cock at the extremity of the pipe, taking water from the
bottom, C', of the vessel; 1), the cock through which the vessel is filled.
The sketch was probably made by De Caus's own hand.

The machine of De Caus, like that of Porta, thus consisted of a metal
vessel partly filled with water, and in which a pipe was fitted, leading
nearly to the bottom, and open at the top. Fire being applied, the steam
formed by its elastic force drove the water out through the vertical pipe,
raising it to a height limited only by either the desire of the builder or
the strength of the vessel.

***********************************

Looks like water pumping problem solved for your hydroFan application in
the most simplest of manners -- and Look MA -- no moving parts!!

(As long as you have some waste heat of -- say -- 300 F or more)

Well -- say a couple of hand operated valves. First of all -- using this
system one can greatly increase the head of water (height of your
reservoir) -- easy to go 15 feet -- as example (About 7 psi steam pressure
would then be required)

So the amount of water flow would be much less.

Second -- the spent water is collected in a container at the bottom --
after it has done "work" in your HydroFan -- now -- here comes the cute part.

You run a pipe to the pumping chamber from the spend water return. That
pipe exits from the bottom of that water reservoir. and enters the top side
or bottom of the steam expansion chamber.

Once you steam expansion pump has depleted it water charge -- you close the
top valve and open the valve to the drain reservoir -- 

As long as the drain reservoir is a foot or so higher than the steam
expansion chamber -- water will flow into the expansion chamber --
condensing the steam there -- and thus drawing in the water from that
reservoir till full.

You then open the valve to pump water to the high reservoir -- and close
the valve going to the low one.

Cycle repeats -- water "pumps" --

Make sure your hydro pump is made of materials that can take -- say -- 180
F water.

Run the system hot -- and again -- a side benefit is even much more
purified water produced every day!!

When you stop the system you do so with the high tank charged -- so you
have that "energy" stored (classical potential energy) to start your fire
for the next time.

You further replenish by condensing as described the steam expansion pump
chamber with a fresh batch of water.

Next time you start up -- when the top tank runs down to fill the bottom
reservoir -- drain and bottle that -- it is "purified" cold water -- by
then the expansion chamber should have "pressure" -- and ready to pump up
the upper tank full again.

Once could also consider this a stationary Minto Wheel??

>From India:

http://www.geocities.com/vikrantsuri3/projreport.html

or:

http://my.voyager.net/~jrrandall/MintoWheel.html

And never forget Jeff -- a "Dunk-Bird" could run a bellows!!

The mechanically inclined might well browse that entire WWW site. 

http://www.history.rochester.edu/steam/thurston/1878/index.html

Great reading!!

If we are going to dream -- at least let's do it in color??

The Dunk-Bird Stove!!

(Sounds like a winner to me!!)

Peter / Belize

At 01:04 PM 12/5/2006 -0500, you wrote:
>Dear Peter,
>
>On Monday 04 December 2006 11:15 pm, Peter Singfield wrote:
>> There you go Jeff -- a wooden steam engine -- what more could one want --
>> eh??
>
>I've thought about it before!!! I agree.
>
>That's why I like the Bisschop engine, power and heat. Your wooden steam 
>engine would be simpler.
>
>When I get the time I will add Kevin's and your information to the article 
>(HydroFan).
>
>It takes sometime to really understand how much power a stove uses/makes to 
>move air. Keven's chimney makes a stove better at moving air. Amazing how 
>much work a chimney can do. Maybe it was a bigger invention than the wheel.
>
>Volumetric efficiency, anybody?
>
>
>Jeff
>
>
>
>
>-- 
>Jeff Davis
>Somewhere 20 miles south of Lake Erie, USA
>http://www.velocity.net/~jeff0124
>
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