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Links to air vortex
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Note: This device has limited application
but its scope is viable in certain areas for eco village applications.
Air Conditioning with
ordinary compressed air with No electricity and No moving parts
 
AMAZING
On one ends we get a freezing temperature of minus 50
degree and the other end supplies plus 250 degrees.
THIS
DEVICE HAS NO MOVING PARTS
What Is a Vortex Tube?
A low cost, reliable, maintenance-free solution to a
variety of industrial spot cooling problems. Using an ordinary supply of
compressed air as a power source, vortex tubes create two streams of air, one
hot and one cold, with no moving parts. Vortex tubes can produce:
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Applications |
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Advantages |
 | Cooling electronic
controls |
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| Cooling machining
operations |
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| Cooling CCTV cameras |
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| Setting hot melts |
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| Cooling soldered parts |
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| Cooling gas samples |
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| Electronic component
cooling |
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| Cooling heat seals |
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| Cooling environmental
chambers |
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| No moving parts |
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| No electricity or
chemicals |
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| Small, lightweight |
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| Low cost |
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| Maintenance free |
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| Instant cold air |
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| Durable - stainless
steel |
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| Adjustable temperature |
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| Interchangeable
generators |
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How a Vortex Tube Works
Compressed air, normally 80-100
PSlG (5.5 - 6.9 BAR), is ejected tangentially through a generator into the
vortex spin chamber. At up to 1,000,000 RPM, this air stream
revolves toward the hot end where some escapes through the control
valve. The remaining air, still spinning, is forced back through the
center of this outer vortex. The inner stream gives off kinetic energy in
the form of heat to the outer stream and exits the vortex tube as cold
air. The outer stream exits the opposite end as hot air. There
is a detailed discussion of vortex tube history and theory later in this
section. |
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Controlling
Temperature and Flow in a Vortex Tube
Click to enlarge
Cold airflow and temperature are
easily controlled by adjusting the slotted valve in the hot air outlet.
Opening the valve reduces the cold airflow and the cold air temperature.
Closing the valve increases the cold airflow and the cold air temperature.
The percentage of air directed to the cold outlet of the vortex tube
is called the "cold fraction". In most applications, a cold fraction of
80% produces a combination of cold flow rate and temperature drop that
maximizes refrigeration, or Btu/hr. (Kcal/hr.) output of a vortex tube.
While low cold fractions (less than 50%) produce lowest temperatures, cold
airflow rate is sacrificed to achieve them.
Most industrial applications, i.e.,
process cooling, part cooling, chamber cooling, require maximum
refrigeration and utilize the 3200 series Vortex Tube. Certain "cryogenic"
applications, i.e., cooling lab samples, circuit testing, are best served
by the 3400 series Vortex Tube.
Setting a vortex tube is easy.
Simply insert a thermometer in the cold air exhaust and set the
temperature by adjusting the valve at the hot end. Maximum
refrigeration (80% cold fraction) is achieved when cold air temperature is
50°F (28°C) below compressed air temperature.
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