Vortex tubes produce up to 6000 BTU/hr (1757 watts) of refrigeration and temperatures as low as -40 deg to solve a variety of industrial spot cooling and process cooling needs. With no moving parts, a vortex tube is highly reliable and inexpensive; and requires no electrical connection at the cooling site. Vortex tubes cool instantly, relying on compressed air spinning in the tube to separate the air into cold and hot air streams.
Vortex tubes are a compact source of refrigeration and cooling, with models ranging from 6 – 13 inches (150 – 330 mm) long and cooling capacities ranging from 100 – 6000 BTU/hour (29 – 1757 watts). Vortex tube performance is easily adjustable by changing the inlet air pressure, ratio of cool air to exhaust or by changing the generator in the tube itself. And while normally used for cooling, vortex tubes can also be used for heating applications, merely by channeling the exhaust hot air to the application.
Vortex tube technology was invented by French physicist Georges Ranque in 1930, and first developed for industrial use by Vortec in the 1960s. Since then, vortex tubes have been applied for a wide range of cooling applications on machines, assembly lines, in processes and for testing and measurements.
|Material of Construction||Brass/Stainless Steel||Brass/Stainless Steel||Brass/Stainless Steel||Aluminum|
|Inlet, inch, NPT||1/8||1/8||1/8||1/4|
|Cooling Capacity (BTU/hr)||100||200||400||640|
|Air Consumption @ 100 psig (scfm)||2||4||8||11|
|Inlet, Female or Male||F||F||F||F|
|Material of Construction||Stainless Steel||Aluminum||Aluminum||Aluminum||Aluminum|
|Inlet, inch, NPT||1/4||1/4||1/2||1/2||1/2|
|Cooling Capacity (BTU/hr)||1500||2650||3000||4500||6000|
|Air Consumption @ 100 psig (scfm)||25||35||50||75||100|
|Inlet, Female or Male||M||F||M||M||M|
Due to the fact that we are continuously improving our products, the descriptions, illustrations, specifications,dimensions, and part numbers are subject to change without notice. Every effort has been made to have the information on this site error free, we can not be responsible for errors and or omissions.
ITW Vortec's vortex tube products have been solving industrial cooling problems for years. Using only filtered, factory compressed air as a power source, they convert ordinary compressed air into two air streams -- one hot and one cold. At 100 PSIG (6.9 Bar) and 70° F (21° C) inlet temperature, a vortex tube can produce refrigeration up to 6000 BTUH (1512 kcal/H) or temperatures to -40° F (-40° C).
Choose one of our Cold Air Guns for quick, easy installation or the model from our complete vortex tube line that best fits the specific needs of your application.
|Vortex Tube Models and Performance Specifications:|
|MODEL NO.||COMPRESSED AIR PRESSURE -- 100 PSIG||COMPRESSED AIR PRESSURE -- 6.9 BAR||
DROP ° F*
DROP ° C*
* Airflow temperature can be dropped up to an additional 20° F (11° C). Colder airflow temperatures are produced by adjusting the needle valve to increase the hot airflow. The needle valve is located in the hot exhaust. Vortex Tubes produce less airflow at colder temperatures and have less BTUH (kcal/H) capacity.
|VOR.106GEN||Individual Generator for VOR.106 Vortex Tube -- specify 2, 4 or 8 SCFM|
|VOR.106MC||Cold End Muffler for VOR.106 Vortex Tube|
|VOR.208GEN||Individual Generator for VOR.208 Vortex Tube -- specify 11, 15, 25 or 35 SCFM|
|VOR.208MC||Cold End Muffler for VOR.208 or VOR.308 Vortex Tubes|
|VOR.208MH||Hot End Muffler for VOR.106 or VOR.208 Vortex Tubes|
|VOR.308MH||Hot End Muffler for VOR.308 Vortex Tube|
|VOR.328M||Cold or Hot End Muffler for VOR.328 Vortex Tube|
|VOR.328XB||Individual Generator for VOR.328 Vortex Tube -- specify 50, 75 or 100 SCFM|
Any fluid that flows and rotates about an axis such as a tornado, is called a vortex. A vortex tube creates a vortex and separates it into two air streams-one hot and one cold. Figure 1 shows how a vortex tube works. Compressed air enters a cylindrical generator which is proportionately larger than the hot (long) tube. The generator causes the air to spiral. The spiraling air is forced down the inner walls of the hot tube at speeds reaching 1,000,000 rpm. At the end of the hot tube, a small portion of this air exits through a needle valve as hot air. The remaining air is forced back through the center of the incoming air stream but at a slower speed. The heat in slower moving air is transferred to the faster moving incoming air. This super-cooled air flows through the center of the generator and exits through the cold air exhaust port.
Temperature Separation Effects
The Vortex Tube Creates two types of vortices: free and forced. In a free vortex (like a whirlpool) the angular velocity of a fluid particle increases as it moves toward the Center of the vortex-that is, the closer a particle of fluid is to the center of a vortex, the faster it rotates. In a forced vortex, the velocity is directly, proportional to the radius of the vortex-the closer the center, the slower the velocity.
In a vortex tube, the outer (hot) air stream is a free vortex. The inner (cold) air stream is a forced vortex. The rotational movement of the forced vortex is controlled by the free vortex (hot air stream). The turbulence of both the hot and cold air streams cause the layers to be locked together in a single, rotational mass.
The inner air stream flows through the hollow core of the outer air stream at a slower velocity than the outer air stream. Since the energy is proportional to the square of the velocity, the cold air stream loses its energy by heat transfer. This allows energy to flow from the inner air stream to the outer air stream as heat creating a cold inner air stream.
The percentage of total input air volume released through the cold air exhaust of a Vortex Tube is called the Cold Fraction. A valve located in the hot air exhaust of the Vortex Tube controls the Cold Fraction. For example, if the total compressed air input is 15 SCFM (424.5 SLPM) and the Cold Fraction is 70%, the amount of air exiting the cold end wilt be 10.5 SCFM (297.2 SLPM); 4.5 SCFM (127.4 SLPM) exits the hot end.
Cold Fractions of 60-80% produce maximum efficiency-greatest power (BTUH) output- and are ideal for cooling machining operations, electrical controls and enclosures, liquid baths and workers. Low Cold Fractions (less than 50%) have reduced airflows and produce the lowest temperatures for cooling glass, laboratory experiments and for testing electronic components.
° F(° C)
° F(° C)
° F(° C)
The descriptions, illustrations, specifications, dimensions, and part numbers are subject to change without notice.
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