I will try to answer your questions Eric.
A Even your vacuum will leak some dirty air into the environment of a house
interior because it is impossible to have an airtight seal.
A My machine is not a vacuum cleaner. And the air being drawn through the
carpet is immediately replaced by the air that comes from the outlet this
means that the seals do not fail under the ambient air pressure in the same
way that the Vacuum cleaner seals do.
Q I prefer a central vacuum where all the dirty air is exhausted outside
and not in the
house. Granted this air and the heat or cooling it contains is wasted.
A So It would not be able to replace energy lost and be no more efficient
than a Vacuum cleaner.
And it is not possible for everyone to have such a system and in any case it
reminds me of the days when people emptied their buckets out of the window.
Q Do you not run air through the motor to cool it? Where do you dump it.
You
certainly cannot use the hot dirty air to cool the motor!
A It is possible to make motors that use thinner laminations and this will
reduce the eddy currents that flow and reduce heat. And using thicker wire
for the windings will make the motors run much cooler than the vacuum
cleaner motors.
But because the closed loop cleaner uses much less power normall motors run
cool.
Q Where do you dump it. You certainly cannot use the hot dirty air to cool
the motor!
A The same as with the Vacuum Cleaner
In a vacuum cleaner the motor draws the air from the carpet then through the
dust bag, which acts as the primary filter, and the majority of the dust is
deposited there leaving only the finest of particles to continue on through
the system and the motor.
The fine filters are not introduced into the Vacuum cleaner system until the
air has been through the motor it is the fine filters that obstruct the air
flow causing the need for larger motors and creating the back pressures that
cause the vacuum cleaner seals to fail.
In the CAFC or closed loop cleaner the exhaust air is returned to the head
of the cleaner after being allowed to expand in expansion chambers and
hoses, this causes the temperature of the air to drop.
It is then directed onto the carpet to lift dirt and dust, along with the
action of the revolving brush at this point it comes under the influenced of
the intake of air from the fan, and the carpet or floor acts as the lower
wall of a continuous air channel where the flow of air is completely
independent of the 14.7 pounds per square inch of ambient air pressure.
This unique aerodynamic action is why the machine works at a fraction of the
power of a conventional cleaner.
The surface area of the CAFC case and the carpet itself further reduce the
temperature of the air and in practice this system will run cooler than a
vacuum cleaner for the same amount work achieved.
When I try to explain the CAFC to someone it reminds me that at school we
were told that a two-stroke engine should not work. But for some unknown
reason it did.
In fact the reason is quite logical but not easy to explain.
And look what happened to Frank Whittle and his engine only a World war got
that off the ground.
Cheers
Ben.
[email protected]
http://www.edginton.info/project1
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