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Full-Text Articles in Engineering
Liquid Drop Growth On A Fiber, A. Yarin, George Chase, W. Liu, S. Doiphode, Darrell Reneker
Liquid Drop Growth On A Fiber, A. Yarin, George Chase, W. Liu, S. Doiphode, Darrell Reneker
Darrell Hyson Reneker
A quantitative model is described and verified to predict the growth of oil droplets by coalescence on a single nanofiber. The model considers a stream of fluid carrying many tiny droplets of a different fluid. The mechanisms by which the tiny droplets are captured by a drop growing on a fiber are considered. Different capture mechanisms are examined, including interception, Brownian motion of droplets, and vapor deposition by diffusion. It is shown that droplet interception and Brownian diffusion contribute to drop growth on nanofibers for airborne oil droplets in the size range from 100 to 1000 nm. Merging of growing …
Recycled Expanded Polystyrene Nanofibers Applied In Filter Media, C. Shin, George Chase, Darrell Reneker
Recycled Expanded Polystyrene Nanofibers Applied In Filter Media, C. Shin, George Chase, Darrell Reneker
Darrell Hyson Reneker
In this work polystyrene (PS) nanofibers are electrospun from recycled expanded polystyrene (EPS). These fibers are mixed with micro glass fibers to modify the glass fiber filter media. The filter media are tested in the separation of water droplets from an emulsion of water droplets in oil. Water-in-oil emulsion separations are important to the petrochemical industries for product quality, safety, ecologic and economic reasons. The experimental results in this work show that polystyrene nanofibers with diameters of around 600 nm were produced by the electrospinning method. The addition of the nanofibers to conventional micron sized fibrous filter media improves the …
The Effect Of Nanofibers On Liquid-Liquid Coalescence Filter Performance, C. Shin, George Chase, Darrell Reneker
The Effect Of Nanofibers On Liquid-Liquid Coalescence Filter Performance, C. Shin, George Chase, Darrell Reneker
Darrell Hyson Reneker
A number of factors influence the efficiency and the economics of the separation of dispersed liquid drops in an immiscible liquid–liquid mixture. One important factor that controls the performance of a filter medium in the separation is the fiber size. Electrospun polymer nanofibers have diameters in the nanometer range and are arbitrarily long. The experimental results in this work show that adding nanofibers to conventional micron-sized fibrous filter media improves the separation efficiency of the filter media but also increases the pressure drop. An optimum in the performance occurs (significant increase in efficiency with minimal increase in pressure drop) with …