Inversion temperature for adiabatic evaporation of liquid into an air-steam mixture
E.P. Volchkov1, A.I. Leontiev2, and S.N. Makarova1
1Kutateladze Institute of Thermophysics SB RAS, Novosibirsk, Russia
2Bauman Moscow State Technical University, Moscow, Russia
Pages: 493–504
Abstract
This paper deals with adiabatic evaporation of various liquids into an air-steam mixture and pure superheated steam. The focus is made on the inversion temperature, which means that the rate of liquid evaporation into an air-steam mixture (superheated steam) becomes equal to the rate of evaporation into dry air. A simple analytical solution for finding of inversion temperature was derived, and the required conditions of existence of the given phenomenon are found. The influence of parameters of the main flow (vapor quantity, pressure, and flow regime) on the value of inversion temperature is analysed. It is shown that consideration of the influence of injection flow on relative function of heat transfer for inversion temperature definition of ethanol, acetone, and benzene is necessary. A comparison with numerical modelling was made to estimate the analytical solution accuracy.
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