2134/34580
J.M. Topper
J.M.
Topper
The measurement and characterisation of small quantities of moisture in powders
Loughborough University
2018
untagged
Chemical Engineering not elsewhere classified
2018-08-17 10:34:15
Thesis
https://repository.lboro.ac.uk/articles/thesis/The_measurement_and_characterisation_of_small_quantities_of_moisture_in_powders/9239963
It is well known that changes in atmospheric humidity can
significantly affect the ease of recovery of stored powders. This
is demonstrated, explained and an investigation of a technique to
monitor the effects involved is carried out.
The demonstration is by construction of powder shear tests at
various humidities. The effects observed are explained in terms of the water vapour–surface interaction by use of common physical adsorption
models. To devise an efficient monitoring technique the
literature pertaining to moisture measurement is reviewed and an
electrical conduction method is preferred. A mathematical model for flow of electrical current through a powder bed is developed
and is shown to be reasonable.