Statistical Rate Theory Examination of Ethanol Evaporation

Abstract

A series of low-temperature (246 < T(I)(L) < 267 K) steady-state ethanol evaporation experiments have been conducted to determine the saturation vapor pressure of metastable ethanol. The measured interfacial conditions have been used with statistical rate theory (SRT) to develop an expression for the saturation vapor pressure as a function of temperature, f(srt)(eth). This expression is shown to be thermodynamically consistent because it gives predictions of both the evaporative latent heat and the liquid constant-pressure specific heat that are in agreement with independent measurements of these properties. In each experiment, the interfacial vapor temperature was measured to be greater than the interfacial liquid temperature, [triple bond]DeltaT(I)(LV). When f(srt)(eth) is used in SRT to predict DeltaT(I)(LV), the results are shown to be consistent with the measurements. Other expressions for the saturation vapor pressure that are in the literature are examined and found to be thermodynamically inconsistent and do not lead to valid predictions of DeltaT(I)(LV).

Evaporation of Micro-Droplets: the "Radius-Square-Law" Revisited

“…A new attitude is often sought. The application of statistical rate theory (SRT) [8,9] or irreversible thermodynamics [10,11] make an example.…”

Energy Transport by Thermocapillary Convection during Sessile-Water-Droplet Evaporation

“…During each experiment, the temperatures and the temperature gradients in each phase were measured at 10 positions along the interface. A coupled system of equations was formed that included the statistical rate theory (SRT) expression for the evaporation flux [16][17][18] and solved to predict the droplet shape and the evaporation rate. These predictions are evaluated by comparing the measured droplet shape and the measured pumping rate with those FIG.…”

“…Because of symmetry, the thermocapillary convection vanishes at the droplet apex [17,18]. The evaporation flux at this point, j ev ð0Þ, is determined from the measured temperatures and temperature gradients in each phase and Eq.…”

Specificity Switching Pathways in Thermal and Mass Evaporation of Multicomponent Hydrocarbon Droplets: A Mesoscopic Observation

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