Determination of external mass transfer coefficients in dynamic sorption (DVS) measurements

Alva Thorell, Lars Wadsö

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7 !!Citations (SciVal)
135 Nedladdningar (Pure)

Sammanfattning

A sorption balance is an instrument used to measure vapor uptake in a sample at controlled temperature and relative humidity. It is most commonly used to determine equilibrium values (sorption isotherms), but is also used for kinetic measurements of transport coefficients. Such measurements can be affected by the external mass transfer resistance in the gas phase around the sample. This paper presents a method to determine the external mass transfer coefficient for a given flow geometry using a water saturated sample, including corrections for temperature changes from evaporative cooling, which is found to have considerable effect on the calculated constant.
Originalspråkengelska
TidskriftDrying Technology
Tidigt onlinedatum2017 jun 23
StatusE-pub ahead of print - 2017 jun 23

Ämnesklassifikation (UKÄ)

  • Teknik och teknologier

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