Atomization vs Vaporization

[Jeffrey Engel]

Is 10 microns the magic number for water as well?

Jeffrey Engel
--- Robert Harris <bob at bobthecomputerguy.com> wrote:
> Revist Ideal Gas Laws.
> 
> The absorbtion of heat in the intake tract and the
> cylinder prior to
> combustion is not to affect the energy release of
> combustion, it is to both
> reduce the work of induction and to increase the
> amount of the inducted
> charge.
> 
> The heat of vaporization of fuel is large with
> respect to the inducted air
> mass and thus can cause significant changes in the
> temperature and thus total
> quantity of inlet charge.
> 
> Liquid fuel atomized to 10 microns or less ( you
> will see that number many
> times ) burns not as a liquid - droplet by droplet -
> as essentially identical
> to a pre-mixed gas.
> 
> A liquid "vaporized" has transitions to a gas state
> - with a significant size
> change.  Water expands approx 1800 times going to
> steam - fuel significantly
> less, but the resultant vapor molecule is orders of
> magnitude greater in size
> than the liquid.
> 
> Atomized - preferably to 10 micron or less - fuel
> absorbs heat - thus cooling
> the intake charge and increasing the fresh charge
> inductable - without
> appreciatory changing the size of the fuel particle
> 
> Vaporization the fuel absorbs the heat, but since a
> state change is involved,
> it greatly expands the space occupied by the fuel. 
> The benefits of cooling
> are offset by the loss of space by vaporization.
> 
> Atomize - not vaporize.
> 
> 
>
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