current flow Articles

This research investigated the effects of co- and counter-current flow patterns on oil-water-solid separation efficiencies of a circular separator with inclined coalescence mediums. Oil-water-solid separations were tested at different influent concentrations and flowrates. Removal efficiencies increased as influent flowrate decreased, and their correlationship can be represented by power ...

Aug. 31, 2010

By IWA Publishing

A new method of validation of the mathematical model of the processes taking place inside the aluminium electrolysis cell has been proposed. The method is based on the comparison of the calculation results of the entropy generation rates obtained in theoretical way with the exergy losses estimated from global exergy balance equation. The following irreversible processes have been analysed - ...

Nov. 10, 2014

By Inderscience Publishers

We present a brief review of time dependent quantum transport theory for analysing nanoelectronic devices. We focus on both theoretical and numerical techniques developed recently for calculating time-dependent current flowing through noninteracting phase-coherent conductors connected to external leads, in response to external time dependent bias voltages. For sharp step- and square-shaped ...

Aug. 21, 2008

By Inderscience Publishers

Abstract The transient electromagnetic (TEM) response from a conductive plate buried in a conductive half-space and energized by a large-loop transmitter is investigated in a heuristic manner. The vortex and galvanic components are each calculated directly in the time domain using an approximate procedure which ignores the electromagnetic coupling present in the complete solution. In ...

Jan. 17, 1984

By Geonics Limited

This paper examines the application of a proven geophysical technology that is highly effective in assessing seepage flow conditions through, beneath and around earthen embankments. The technology works rapidly with minimal disruptions to dam operations—it requires no drilling or draining of the reservoir. It has become a competitive solution to many of the complex challenges faced with dam ...

Jan. 15, 2013

By Willowstick Technologies LLC

Electrical conductivity is a measure of the ability of a solution to cany* a current. Current flow in liquids differs from mat in metal conductors in that electrons cannot flow freely, but must be carried by ions. Ions are formed when a solid such as salt is dissolved in a liquid to form electrical components having opposite electrical charges. For example, sodium chloride separates to form Na" ...

Dec. 31, 2004

By IC Controls Ltd.

Classification of Equipment Grounding Earthing refers to the connection between neutral points of power system and electrical devices, exposed conductive part of electrical equipment and outer conductive part of equipment. Equipment grounding can be divided into working grounding, lightning protection ...

Nov. 21, 2019

By ningbo zhenhai beisuda petrochemical equipment co.,ltd

In nearshore waters, spatial and temporal scales of waves, tidal currents, and circulation patterns vary greatly. It is, therefore, difficult to combine these factors’ effects when trying to predict sediment transport processes. This paper proposes the concept of significant wave velocity, which combines the effects of waves, tides, and ocean currents using the horizontal kinetic energy ...

Sep. 28, 2014

By IWA Publishing

We have recently had a little bit of confusion between our Rapid Start lamps and our Mercury Arc Lamps and their differing warranties. So to clear up some of your concerns our Production Director Richard Cherry explains how they differ: “It is true, a Rapid Start Lamp is just another version of a Mercury Arc Lamp. However, we add a different fill gas to ...

Jul. 28, 2015

By Alpha-Purify

Side-scan sonar investigations in the eastern part of the macrotidal Bay of Seine have revealed the presence of numerous rippled scour depressions (RSDs) at water depths of 5–9 m. The sediments in these depressions consist essentially of coarse-grained shell hash derived from underlying Holocene sediments dated at roughly 6,500 years BP, and arranged in large wave-generated ripples. The shallow ...

Jan. 31, 2005

By Springer

When an internal fault occurs in a synchronous generator, the symmetry between the parallel paths of the winding is broken and different currents flow in them, due to unsymmetrical magnetic linkage between the stator windings. The aim of this paper is to present a simulation model to investigate the effect of internal fault on the parallel path currents of a large synchronous generator using ...

Dec. 19, 2011

By Inderscience Publishers

Choosing a motor/battery/ fpv drone ESC combo is a combination of science, guess-work, and magic! Here is a process to select the "right" motor, ESC and battery.  (1) Estimate the AUW ("All-Up-Weight") of the plane; (2) Select a motor and propeller with (a) the proper thrust, and/or (b) the proper power, given the estimated ...

Sep. 2, 2019

By Shenzhen TitanFlying Technology Co., Ltd

What’s at Stake? Electrical shock is a leading cause of workplace fatalities and almost every day approximately one electrocution, 10 disabling injuries and 100 electrical shocks are reported. What’s the Danger? There are four main electricity-related injuries:  Electrocution; Shock, which is caused when ...

Jan. 15, 2017

By SafetySmart

Increase the safety of equipment and systems by reducing the electrical resistance between ground connections (grounds and grounding wires) and metal equipment chassis. Hioki's Resistance Meter RM3548 can play a key role in this important function. When the ground potential of equipment increases, that equipment becomes more likely to malfunction or ...

Sep. 4, 2019

By Hioki USA Corporation

 ABSTRACT In 2008, the Metropolitan Council Environmental Services (MCES) in Saint Paul, Minnesota must meet new requirements for effluent phosphorus discharges at two large wastewater treatment facilities. To meet these standards at current flows, MCES staff searched out a cost effective solution and retrofitted both plants with air mixed selectors. However, it was unclear how the air ...

Oct. 12, 2007

By Water Environment Federation (WEF)

There is growing evidence that changes in the current hydrological behaviour of urbanising catchments are a major source of impacts on the downstream water bodies. However, current flow-rates are rarely considered in studies on urban stormwater management, usually focused on extreme flow-rates. We argue that taking into account receiving water bodies is possible with relatively small ...

Jul. 15, 2014

By IWA Publishing

Every remote environmental monitoring station should include a plan for an Earth Ground. All sensors, loggers and telemetry devices should be bonded, or connected, to the Earth Ground in order to protect instrument circuitry from damage due to changes in electric potential. Electric potential is defined as the difference in electrical energy between two points and is typically measured in volts ...

Jan. 29, 2008

By Stevens Water Monitoring Systems, Inc.

The electro-oxidation of aromatic compounds in 4,4′-diaminostilbene-2,2′-disulfonic (DSD) acid wastewater on IrO2–Ta2O5/Ti anodes was studied. The current efficiency was evaluated in terms of chemical oxygen demand (COD) by introducing a new factor, the fraction of the Faradaic current to the total cell current (β) through the network analysis of packed bed electrode system (PBEs). Experimental ...

Dec. 31, 2010

By IWA Publishing

Abstract—A difficult-to-predict electrical failure is the continuity failure. Pressure junctions are common problem sources for continuity failures. Available tools to search for pressure-junction problems include low-resistance testing, temperature monitoring using physical contact between sensor and heated part, pyrometer temperature monitoring, infrared photography, and visual ...

Jun. 12, 2011

By Eaton Corporation

This study aims to investigate the effect of the main parameters on the performance of a continuous flow electro-coagulation (EC) process for nitrate removal efficiency and its operating costs. For this purpose, the Taguchi experimental design with orthogonal array L27 (313) was applied to analyze the effects of selected parameters, namely initial nitrate concentration, inlet flow rate, ...

May 5, 2017

By IWA Publishing