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Forced Vaporization of Water

Report Number: AFOSR-65-2260
Author: Erickson, T. A.
Corporate Author: IIT Research Inst.
Date of Publication: 1965
Pages: 4
Contract: AF 49(638)1121
Original AD Number: AD 625363

The usual Hertz-Knudsen relation derived for the rate of evaporation of pure liquids is given by n =(2πMRTs)-1/2(Ps-P).  The rate of evaporation is shown to be represented as well, if not better, by a relation derived from a classical thermodynamic treatment of the forced vaporization of water as a steady-rate process.  On the basis of this derivation, the mass flow is decribed by the equation n=NA-1ln(P0/P).

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