Formation of condensation aerosols at high vapor supersaturation

Highly Dispersed Aerosols (Vysokodispersne Aerozoli)

“…Therefore, the results [16] for the calculations of the process of aerosol formation are still inapplicable. It should be pointed out that the concentration of dimers in nitrogen, calculated by this method, differ sompwhat from the concentration calculated by Reed's method [6].…”

“…The latter error can be eliminated by using, instead of Reed's method, methods of calculating reduced group integrals, although even the latter methods for such calculations require a much larger volume of calculations than Reed's method. Sutugin and Fuks [6] advance a method of calculating nucleation of high supersaturations, based on the combining of the theory of constant nucleus dimension with Reed's calculations. According to this method the process is broken down into several tens or hundreds of time intervals At.…”

“…This program was combined with the above-described method of calculating nucleation and condensation growth [6].…”

“…A generator of the first of these two types was used in the above--mentioned work [6]. The dependence of the dispersion of the HDA on the operating mode of such a generator was investigated by way of example of an aerosol obtained through the condensation of MoO 3 vapor in a hot air stream flowing into cold air at the rate of 8 to 580 m/sec [35].…”

“…Therefore it is difficult to produce aerosols with particle dimensions less than 100 X in heat exchanger generators. The formation of MoO 3 aerosols by passing hot air containing vapors of this substance at a rate of I to 28 I/min through a quartz water cooler with a diameter of 20 trnn was investigated in [35]. At greater concentrations of 0.002--8 g/m 3 the average dimension of the particles obtained, determined from a certain BET method for specific area of powders obtained by the precipitation of these aerosols, was 130--1,000 A.…”