The FLEC® has been validated and used in research for many years.
Below is a publication list of journal articles, abstracts, poster or oral presentations where the FLEC or CHEMATEC’s other products have been in focus.
If you have anything that can be added to the list, we encourage you to contact CHEMATEC.
2006 |
Zhang, Li-Zhi Investigation of moisture transfer effectiveness through a hydrophilic polymer membrane with a field and laboratory emission cell Journal Article In: International Journal of Heat and Mass Transfer, vol. 49, no. 5, pp. 1176 - 1184, 2006, ISSN: 0017-9310. Abstract | Links | BibTeX | Tags: Air dehumidification, Diffusion, Hydrophilic membranes, Moisture transfer @article{ZHANG20061176,This research focuses studies of water permeation potential through a polymer membrane with the help of a standard field and laboratory emission cell. Special efforts are devoted to finding a correlation governing the relations between the number of transfer units (NTU) and the moisture exchange effectiveness. As a first step, moisture diffusivity in the hydrophilic polymer membrane is experimentally measured. In combination with mathematical modeling, the moisture concentration distributions in the cell, the water uptake gradients in the membrane, as well as the local vapor emission rate on membrane surface, are investigated. The results are that the emission rates show a non-uniform character and a polynomial equation governing the moisture exchange effectiveness and the dimensionless number of transfer units, could be used to inversely estimate the diffusivity of water vapor in hydrophilic membranes. The form and the value of constants in the equation are obtained. |
Zhang, Li-Zhi Evaluation of moisture diffusivity in hydrophilic polymer membranes: A new approach Journal Article In: Journal of Membrane Science, vol. 269, no. 1, pp. 75 - 83, 2006, ISSN: 0376-7388. Abstract | Links | BibTeX | Tags: Air dehumidification, Gas separation, Hydrophilic membranes, Mass diffusion @article{ZHANG200675,Moisture diffusivity in hydrophilic membranes is measured traditionally by stepwise drying experiments or steady state permeation tests. Problems with these methods are that the convective moisture resistance in membrane boundary layers is seldom taken into account, and the distributed nature of moisture emissions on membrane surface and air concentration above it often give distorted results. In this study, a new method designed to overcome these imperfections is proposed in predicting the diffusivity of moisture in hydrophilic membranes. The key equipment is a filed and laboratory emission cell. The whole technique comprises two steps: in the first step, the cell surface convective mass transfer coefficient is obtained; and in the second step, moisture diffusivity in membrane is measured. The technique also involves a two-dimensional modeling of moisture transport in membranes. |