Abstract Feed spacers are the critical components of any spiral-wound filtration module, dictating performance. Three spacer designs, namely a non-woven commercial (varying filament cross-section), symmetric pillar spacer, and novel hole-pillar (constant diameter) were studied using Direct Numerical Simulations (DNS), 3-D printed subsequently experimentally tested in lab-scale ultrafiltration s...

The spiral-wound element is an industry standard because of its high membrane area packing density, low cost of manufacture, and extensive installation base worldwide. Plastic mesh spacers create a feed-channel between facing membrane leafs and promote turbulent flow, which aids to reduce solute concentration polarization and related scaling and fouling phenomena. Computational and experimental...

A three-dimensional modelling approach is used to study the effects of operating and ambient conditions on the thermal behaviour of the spiral wound supercapacitor. The transient temperature distribution during cycling is obtained by using the finite element method with an implicit predictor-multicorrector algorithm. At the constant current of 2A, the results show that the maximum temperature a...

We present a comparison of barstrength Qb and circumnuclear dust morphology for 75 galaxies in order to investigate how bars affect the centers of galaxies. We trace the circumnuclear dust morphology and amount of dust structure with structure maps generated from visible-wavelength HST data, finding that tightly wound nuclear dust spirals are primarily found in weakly barred galaxies. While str...

Batch RO is designed to achieve high energy efficiency and recovery in desalination. However, so far relatively few experiments on batch have been reported. Here we present an extensive experimental study of a single-acting, free-piston system using 8-inch spiral wound membrane. The was tested the laboratory with brackish feed water containing up 5 g/L NaCl. objective quantify performance terms...

In DEMO, the divertor must endure steady state loads of 10 MW m−2 and transient thermal cycling up to 20 m−2. A novel target, termed Spiral Plate Module (SPM) designed meet these loads, was initially optimized by a one-dimensional, steady-state model. The best design trade-off between wall overheat (τs)—a figure merit for cooling performanceand pumping ratio (ηP)—a comparison pressure drop inci...

In this paper, we designed a new detecting system of bridge cables with a snake-shaped robot. It can solve the problems such as inefficiency and danger of aloft work in the bridge detecting by workers. The detecting system of the bridge cables includes: a snake-shaped robot; a multiple and monocular vision detection module; a nondestructive magnetic leakage detecting module; a magnetostrictive ...

Grade 1 open spiral fracture of left tibia in a 1.5 year-old horse was treated using a combination of 4.5 mm locking compression plate (LCP) and a dynamic compression plate applied in a neutralization manner. The open wound was managed postoperatively by regular dressing and lavage. Radiograph at 24 days post-treatment revealed callus formation and at two months complete bridging callus was obs...