Air or any other gas in a moving stream possessing kinetic energy is impinged on a foraminous barrier having a multitude of dissimilar adjacent nozzle orifices. Such impingement converts the kinetic energy of the stream to internal energy within the gas; and compression through the nozzle orifices of the foraminous barrier also increases the internal energy and reduces the pressure of the air or other gas (Bernoulli's principle), and greatly increases the downstream intensity of turbulence in the flowing air or gas. This treatment conditions the air, after its expansion in a processing chamber, to effect mixing with and rapid vaporization of liquid substances at low temperatures without the addition of external sensible heat, or with less external sensible heat, thus effecting savings of energy in many industrial, commercial and consumer applications. Typically, the foraminous barrier consists of two screens having appropriate characteristics pressed together in firm contact with their interstices randomly arranged. The foraminous barrier can be installed on diverse new and existing equipment.
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