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. |
Zhang, Li-Zhi Heat and mass transfer in a quasi-counter flow membrane-based total heat exchanger Journal Article In: International Journal of Heat and Mass Transfer, vol. 53, no. 23, pp. 5478 - 5486, 2010, ISSN: 0017-9310. Abstract | Links | BibTeX | Tags: CFD modeling, Conjugate heat transfer, Conjugate mass transfer, Membrane, Quasi-counter flow @article{ZHANG20105478,Membrane-based total heat exchangers (or energy recovery ventilators) are the key equipments to fresh air ventilation, which is helpful for the control of respiratory diseases like Swine flu and SARs. Cross flow has been the predominant flow arrangement for these equipments. However performances are limited with this arrangement. A counter flow arrangement is the best. In this research, a quasi-counter flow parallel-plates total heat exchanger is constructed and investigated. A detailed mathematical modeling is conducted and the model is experimentally verified. The temperature and humidity values on membrane surfaces, and in the fluids are solved as a conjugate problem. The fluid flow, heat and mass transport equations in the entry regions are solved directly. The mean Nusselt and Sherwood numbers, and the sensible and latent effectiveness of the exchanger are calculated. It is found that the effectiveness of the current arrangement lie between those for cross flow and those for counter flow arrangements. The results also found that the flow can be divided distinctly into three zones: two cross-like zones and a pure-counter flow zone. The less the cross-like zones are, the larger the pure-counter flow zone is, and the greater the effectiveness is. The study also provides a solution of modeling mass transfer with FLUENT software from heat mass analogy. |