vortex tube, medium size, instant cooling tubes

What is a Vortex Tube?

The Vortex Tube is an effective, low cost solution to a wide variety of industrial spot cooling and process cooling needs. Compressed air is injected into the vortex tube, flows at a rate of up to 1,000,000 RPM towards the 'hot' end of the tube. Once this hot air reaches the end, a small amount is exhausted through a control valve. The rest of the air is forced backwards towards the other end and exits as 'cold' air. The Vortex Tube can decrease temperatures by ~115°F (46°C) and raise temperatures up by ~200°F (93°C) from the initial inlet air temperature.

Which Vortex Tube will best suite my needs?
Our Vortex Tubes are available in 2 sizes (Small and Medium). Each Vortex Tube is constructed of stainless steel. The wear resistance of stainless steel, as well as its resistance to corrosion and oxidation, assures that Vortex Tube will provide years of reliable, maintenance free-operation.

 

Advantage of Vortex tube
 
Safety, as no electricity at the point of application.
No RF interference.
Low cost of ownership
Lower noise.
SS 304 construction.
Available in two sizes
Enhances reliability and durability of equipment
  Applications or Vortex Tube
 
Panel cooling
Sewing machine needle cooling
Tools and plastic grinding and machining
Spot cooling

 

HOW IT WORKS: Vortex Tubes

    • (A) Compressed air, normally 80 to 100 PSIG (5.5 - 6.9 BAR) enters the Vortex Tube through a standard NPTM inlet and tangentially through a generator into the vortex spin chamber.

    • (B) This air stream spinning at up to 1,000,000 RPM travels in one direction along the small (hot end) tube and then is forced back through the center of this outer vortex.

    • (C) The brass control valve on the hot end allows for quick n' easy adjustment of the "cold fraction".

    • (D) As the center column travels towards the opposite end, it gives off kinetic energy in the form of heat to the outside stream of air and exits the vortex tube as cold air.

 

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Which Vortex Tube will best suite my needs?

Our Vortex Tube are available in 2 sizes (Small and Medium). Each Vortex Tube is constructed of stainless steel. The wear resistance of stainless steel, as well as its resistance to corrosion and oxidation, assures that Vortex Tube will provide years of reliable, maintenance free-operation.

7500 Series Vortex Tube Specifications

The 7500 series Vortex Tube are used in most industrial applications, such as electrical control panel cooling, tool cooling, and parts cooling. These Vortex Tubes optimize airflow and temperature drop to produce maximum cooling power or Btu/hr. (Kcal/hr.).


Size
Model No.
Air Consumption
BTU/Hr. @ 100 PSIG
Kcal / Hr. @ 6.9
Small 7502 2 SCFM (57 SLPM) 145 BTU/Hr. 37
Small 7504 4 SCFM (113 SLPM) 275 BTU/Hr. 69
Small 7508 8 SCFM (227 SLPM) 560 BTU/Hr. 141
Medium 7510 10 SCFM (283 SLPM) 700 BTU/Hr. 176
Medium 7515 15 SCFM (425 SLPM) 1100 BTU/Hr. 277
Medium 7525 25 SCFM (708 SLPM) 1800 BTU/Hr.
454
Medium 7530 30 SCFM (850 SLPM) 2060 BTU/Hr. 519
Medium 7540 40 SCFM (1133 SLPM) 2800 BTU/Hr. 706


7700 Series Vortex Tube Specifications

The 7700 series Vortex Tube are used in applications which require extreme cold termperatures such as circuit board testing, and lab sampling cooling. These Vortex Tubes provide the lowest cold air temperatures, but at a low cold airflow (when less than a 50% cold fraction is used). The 7700 services Vortex Tubes should be only used when temperatures below 0º (-18ºC).


Size
Model No.
Air Consumption
BTU/Hr. @ 100 PSIG
Kcal/Hr. @ 6.9 BAR
Small 7702 2 SCFM (57 SLPM) -- --
Small 7704 4 SCFM (113 SLPM) -- --
Small 7708 8 SCFM (227 SLPM) -- --
Medium 7710 10 SCFM (283 SLPM) - --
Medium 7715 15 SCFM (425 SLPM) -- --
Medium 7725 25 SCFM (708 SLPM) -- --
Medium 7730 30 SCFM (850 SLPM) -- --
Medium 7740 40 SCFM (1133 SLPM) -- --


Other Factors

Inlet Air Temperature
The Vortex Tube will provide a temperature drop from the temperature of the compressed air supply.

Back Pressure
A low back pressure, up to 2 PSIG (.1 BAR), will not affect the performance of the Vortex Tube. Anything over this will have a performance degration of ~ 5ºF (2.8ºC).

Filtration
Filtration to maintain clean air is necessary at a rate of 25 microns or less. filters contain a 5 micron element and are properly sized for airflow.

Noise/Muffling
Both Small and Medium Vortex Tubes can be quite noisey if unducted. offers mufflters for both cold and hot air discharge. If the cold air is ducted, muffling is not usually required.


Vortex Tube Specifications

PSIG
Cold Fraction
10% 20% 30% 40% 50% 60% 70% 80% 90%
20
63F | 35C
62F | 34C
60F | 33C
56F | 31C
51F | 28C
44F | 24C
36F | 20C
28F | 15C
17F | 9C
7F | 4C
15F | 8C
25F | 14C
36F | 20C
50F | 28C
64F | 36C
83F | 46C
107F | 59C
148F | 82C
                 
40
91F | 51C
88F | 49C
85F | 47C
80F | 44C
73F | 41C
63F | 35C
52F | 28C
38F | 21C
26F | 14C
9F | 5C
21F | 11C
35F | 19C
52F | 29C
71F | 39C
92F | 51C
117F | 65C
147F | 82C
220F | 122C
                   
60
107F | 59C
104F | 58C
100F | 56C
93F | 52C
84F | 47C
73F | 41C
60F | 33C
45F | 25C
29F | 16C
10F | 6C
24F | 13C
40F | 22C
59F | 33C
80F | 44C
104F | 58C
132F | 73C
168F | 93C
236F | 131C
                   
80
119F | 66C
115F | 64C
110F | 61C
102F | 57C
92F | 51C
80F | 44C
66F | 36C
49F | 27C
31F | 17C
11F | 7C
25F | 14C
43F | 24C
63F | 35C
86F | 48C
113F | 63C
143F | 79C
181F | 101C
249F | 138C
                   
100
127F | 71C
123F | 68C
118F | 66C
110F | 61C
99F | 55C
86F | 48C
71F | 39C
53F | 29C
33F | 18C
12F | 8C
26F | 14C
45F | 25C
67F | 37C
91F | 51C
119F | 66C
151F | 84C
192F | 107C
252F | 140C
                   
120
133F | 74C 129F | 72C 124F | 69C 116F | 64C 104F | 58C 91F | 50C 74F | 41C 55F | 31C 34F | 19C
13F | 8C 27F | 14C 46F | 26C 69F | 38C 94F | 52C 123F | 68C 156F | 87C 195F | 108C 257F | 142C

    The percentage of cold air produced versus total filtered compressed air consumed by vortex tube.
    Pounds per Square Inch Gauge
    Drop in temperature.
    Rise in temperature.

Actual Vortex Tube Performance

The cold fraction is the "percentage flow" of the airflow at cold end. So a 60% cold fraction means 60% of airflow comes out cold end and 40% goes out the hot end.

The above table is for the 7500 Series (10-15 SCFM) Medium sized vortex tubes. The performance can significantly change for higher flow designs. With that said, it's not generally important to get such "low" tempueratures and in most application the Vortex Tube is "preset" to produce a specific temperature drop.

The cold fraction table above is ONLY for the 7500 Series Generators, or as some competitors like to call ('H' Generators). The 7700 Series Vortex Tube ('C' Generators), produce very cold temperatures but with a lower cold end flow. The 7700 Generators are not designed for high BTU/Hr (or watt) cooling effect.

Temperature drop and Cold end airflow vary inversely between the two as the "cold fraction" changes. The cooling effect is a balance and combination of both outlet flow and temperature drop. Colder temperatures produces do NOT always mean the absolute highest cooling effect will be produced.