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Vortex Pressure Regulation

VACUUM VORTEX TUBE


The proprietary Vacuum Vortex Tube (VVT) provides an energy division of the atmospheric air or any other gaseous medium that feeds the VVT under atmospheric pressure. The VVT operates out of a vacuum pump or source of vacuum at the VVT’s outlet that pools the air through the VVT’s tangential inlet nozzles. Swirling gas flow energy separation under vacuumed conditions is known to be similar to the VT. The VVT, however, is different from the VT in the value of its geometrical design parameters.

The VVT thermal efficiency e.g. ‘cold’ and ‘hot’ flows net temperature increment ΔT is roughly proportional to rarefaction in the cold and the hot flows; i.e. to the differential between the actual absolute pressure in the vacuumed vortex discharge flow and the atmospheric absolute pressure (30Hg).

Some magnitudes of ΔT at different rarefactions and at the cold and hot flows split of 50%:50% are shown below.

Cold/hot flow absolute pressure, Hg

Temperature increment, ΔT°F

20 31
15 50
10 70

Since air feeds the VVT without first being pressurized, the VVT when used as a cold generator is highly efficient, as it does not have any latent heat, which is often typical for schemes utilizing compressed gases.

The cooling and heating or cooling duty created in the VVT can be utilized directly or through a heat exchanger as shown in Fig. 1.

Figure 1 - Vacuum Vortex Tube (VVT)

The VVT is available in the conventional Two Flows design that produces the vacuumed cold and vacuumed hot flows (see Fig. 1) and as the One Flow unit. The One Flow VVT converts the whole inlet flow into a vacuumed cold air. Accordingly, the cooling duty generated in the OF VVT can be utilized directly or through a heat exchanger.

     

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