This paper addresses the optimum design of reverse-flow gas cyclones through the solution of 2 numerical nonlinear optimization problems that respectively maximize cyclone collection and an efficiency/cost ratio. The simulation model was based on the predictive properties of the 1998 finite diffusivity model of Mothes and Löffler, in which the particle turbulent dispersion coefficient is estimated through an empirical correlation between the radial Peclet and Reynolds numbers. The optimizations were formulated with constraints on pressure drop, saltation velocity, and geometrical considerations such that feasible cyclones could always be obtained. The two geometries, named RS_VHE and RS_K, are different from available high-efficiency designs and represent reverse-flow cyclones with a predicted, significantly improved performance. The geometry RS_VHE was built and tested on a laboratory scale, providing experimental evidence of a significantly improved design.
- Advanced Cyclone Systems, S. A.
- Global Optimization of Reverse-Flow Gas Cyclones: Application to ...
Protix Receives 45M€ in Funding to Scale Production of Insect Proteins
Today, the insect supply industry reached a significant milestone with Netherlands-based Protix, the leading insect company, closing 45M€ in funding – delivered by Aqua-Spark, the first investment company focused on sustainable aquaculture, Rabobank, BOM and various private investors. Protix breeds insects for animal feed, as insects offer a low-impact protein alternative that can be cultivated on a variety of food scraps. This is of the utmost importance as global populations continue to grow and the...
Laboratory test report - the effect of scale formation on heat transfer coils
BackgroundEVAPCO, Inc. recently introduced new Evaporative Condensers and Closed Circuit Coolers which utilize extended surface coils. For decades extended “fin” surfaces have been used on heat transfer coils, often referred to as “finned coils” primarily in an effort to increase dry capacity. However, in the past the fin material was limited to carbon steel tubes with a “round profile” prior to hot dip galvanizing. In most cases, the fin material was applied to a few rows of...
Tetrapak, Alfa Laval, Westfalia, Cream separators and Sialex®Ring - Case Study
Tipperary Co-operative, use Sialex®Ring to help control "Scaling" on Plate Heat and Shell and Tube heat exchangers on their " hot water circuits". A further area suitable to benefit from Sialex® is in the Cream separators. These devices are prone to "Scale" build up on flushing jets. Cleaning requires did-assembly and cleaning. This can occur several times during a year. Platetek Engineering proposed installing Sialex®Ring onto the water "feed lines" to the cream separators (Alfa Laval, westphalia)....
Case Study PHE (Plate Heat Exchanger) test results in hard water region
Industry, hotels, commercial buildings even private homes in "Hard" water areas are at a disadvantage due to "Scale" formation on devices, particularly those attached to "Hot" water circuits. A PHE (Plate Heat Exchanger) with a known "Scaling" problem is selected for testing. The attached case study demonstrates how with an "Open" mind, even those sceptical of our products capabilities, do not dispute the achieved results.
Variability of water residence time and free chlorine and disinfection by-product concentrations ...
Sampling campaigns at several points in a sector of a distribution network were conducted during several months to study the spatial and temporal variation of the free chlorine concentration (FCC) and disinfection by-product concentrations (DBPC) at the scale of a residential neighborhood. The water residence times (RT) at these sampling points and for the same period were also simulated using EPANET. Within the neighborhood, the results reveal significant differences in measured FCCs and DBPCs and low intra-day...