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.
2010 |
Min, Jingchun; Hu, Teng; Liu, Xiaowei Evaluation of moisture diffusivities in various membranes Journal Article In: Journal of Membrane Science, vol. 357, no. 1, pp. 185 - 191, 2010, ISSN: 0376-7388. Abstract | Links | BibTeX | Tags: Diffusivity, Mass transfer, Membrane, Membrane resistance, Water vapor @article{MIN2010185,An experimental set-up was designed and constructed to investigate the moisture permeation through a membrane. The test section consists mainly of an airflow channel, a membrane, and a water tank, with the membrane being sandwiched between the channel and water tank. An air gap exists between the membrane and the water in the water tank to avoid any possible wetting of the membrane by the water. Moisture transfers from the water to the airstream in the channel through the air gap and membrane. The moisture transfer process was described using a serial resistance model, which involves the convective moisture resistance in the channel, the moisture resistance through membrane, and the moisture resistance caused by the air gap. Special methods were developed to determine the convective and air gap resistances, with the membrane resistance obtained by subtracting such two resistances from the total resistance. Tests were conducted on three membranes including the PVDF (poly vinylidene fluoride), PES (poly ether sulfone) and cellulose membranes for airflow rates from 3.0 to 5.0l/min, yielding Reynolds numbers from 117 to 195. The results showed that the moisture diffusivities in these membranes were in the order of 10−7 to 10−6kg/ms, with the PVDF yielding the maximum diffusivity and the PES giving the minimum diffusivity. |
2004 |
Luo, R; Niu, J L Determination of water vapor diffusion and partition coefficients in cement using one FLEC Journal Article In: International Journal of Heat and Mass Transfer, vol. 47, no. 10, pp. 2061 - 2072, 2004, ISSN: 0017-9310. Abstract | Links | BibTeX | Tags: Cement, Diffusion coefficient, FLEC, Mass diffusion, Partition coefficient, Water vapor @article{LUO20042061,Water vapor diffusion and partition coefficients in cement slabs were determined by solving the inverse problem of one-dimensional unsteady mass diffusion based on measurements of the concentration of water vapor in a field and laboratory emission cell (FLEC) system. A solution for multi-process mass diffusion was obtained to analyze the influence of the non-uniform initial water vapor concentration distribution on the determination of diffusion and partition coefficients. The main factors affecting the accuracy of the diffusion and partition coefficients were discussed. Good agreement between the measured data and the predictions of the inverse problems showed that the mass diffusion in the cement slabs could be described accurately by the one-dimensional model. |