Ultrasonic spraying

[abyssin3]

A question came to my mind, it is often said that the pantone requires a cold water vapor, in any case not too hot.

Now I remember that we used already 10 years ago in the medical environment of nebulizers by ultrasound to make a very fine water vapor. I thought this technique only existed in this area until I saw these garden fountains which make a very fine and cold vapor.
Ex:
http://www.plantes-carnivores.com/fiche ... ateurs.php

Ultrasonic modules sold at conrad type retailers are around 5-6 €, rather efficient (high evaporation and droplet size <100µM see 10µM) and consume very little electric current (2W?). Does anyone think it could have a useful role in water doping? Rather than going through the exhaust, it's a little easier ...
The disadvantage of this kind of system is of course that there is no heat recovery from the exhaust. So if this one has an important role in fuel economy, it is missed. On the other hand, the spraying would be unequaled compared to all that we know currently.


PS: my post has nothing to do with the two ads above, but I can't remove them.

[ange]

Hello,
The idea is interesting, the "snag" salt is that the "steam" of water must be hot around ~ 90-100 ° C. So plan to reheat water.
Another point: The lifetime of the ultrasonic membrane -6 -12 months ....

[Christophe]

Significantly insufficient flow ...

[MichelM]

Hello
It seems to me that André tried at first but the problem was the life of the system. For the flow it is possible to put several or of sufficient size. The air and water must be warm before entering the reactor but without it being dry steam.
I would have liked to try to see (0,5 µm droplet). I tried: the centrifugal atomizer (20 to 40 µm), a cage with a fine stainless steel grid with a small motor running at 10 rpm;
spraying with an airbrush is also good, but it requires air flow and pressure;
and finally by auto type injector but you also need a pump with a little pressure on the other hand we dose the amount of water well ...
Michel

[renaud67]

that's what you need !!
http://www.shirafrapa.com/french/images/foggers/shira%206head%20pic2.jpg

[Petrus]

I have been interested in this process for quite some time, I plan to give myself a small injection of water (without pantone) on a 125 4t motorcycle, the flow should be sufficient for this displacement, right?

[MichelM]

Doesn't MDFD have to be cheap? It would take 2 MDFD1 for 1L / H, but 48W by 2 and a few Kg ...
For the 125 you don't need a lot of water (hot spray) and you have to be able to deplete the carburetion otherwise there will be no gain in consumption ...
Michel

[abyssin3]

Significantly insufficient flow ...

Not sure, to make 0.5L / 100Km, that might be enough, you just have to see the fountains ...
As for the electric consumption, it seems to me that it is derisory, and especially not 48W for a small membrane. That said, it is true that the lifespan of such equipment may not be huge.

In any case, as Petrus said, for a 125cm², it could be impeccable.

[Petrus]

the selectronic kit consumes 25W for a flow rate of 400ml / h
http://www.selectronic.fr/article.asp?a ... .2593-9999

For the lifetime I saw on other sites that the pellet lasted 3000h

[Petrus]

For the 125 you don't need a lot of water (hot spray) and you have to be able to deplete the carburetion otherwise there will be no gain in consumption ...
Michel

Hot water ?
I thought it was preferable to have the coldest possible air intake (therefore denser) to have better combustion in this sense, the ultrasonic nebulization is very interesting.