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SPECIFICATIONS: Vortex Tube

Which Vortex Tube will best suit 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 the STREAMTEK™ Vortex Tube will provide years of reliable, maintenance free-operation.

7500 Series Vortex Tube Specifications

The 7500 series Vortex Tubes 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
Large 7550 50 SCFM (1416 SLPM) 3400 BTU/Hr. 857
Large 7575 75 SCFM (2124 SLPM) 5100 BTU/Hr. 1285
Large 75100 100 SCFM (2832 SLPM) 6800 BTU/Hr. 1714
Large 75150 150 SCFM (4248 SLPM) 10200 BTU/Hr. 2570

7700 Series Vortex Tube Specifications

The 7700 series Vortex Tubes are used in applications that require extreme cold temperatures such as circuit board testing, and lab sample 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 only be used when temperatures are below 0° (-18°C).

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) -- --
Large 7550 50 SCFM (1416 SLPM) -- --
Large 7575 75 SCFM (2124 SLPM) -- --
Large 75100 100 SCFM (2832 SLPM) -- --
Large 75150 150 SCFM (4248 SLPM) -- --

Other Factors

Inlet Air Temperature
The STREAMTEK™ 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 STREAMTEK™ Vortex Tube. Anything over this will have a performance degradation of ~ 5°F (2.8°C).

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

Noise/Muffling
Both Small and Medium Vortex Tubes can be quite noisy if un-ducted. STREAMTEK™ offers mufflers 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 airflow at the 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" temperatures and in most applications, the Vortex Tube is "preset" to produce a specific temperature drop.

The cold fraction table above is ONLY for the STREAMTEK 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 drops and the cold end airflow vary inversely as the "cold fraction" changes. The cooling effect is a balance and combination of both outlet flow and temperature drop. Colder temperatures do NOT always mean the absolute highest cooling effect will be produced.

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