current flow Articles | Environmental XPRT

Oil droplets and solid particles removal using circular separator with inclined coalescence mediums: comparison between co-current and counter-current flow

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 ...

Sep. 1, 2010

By IWA Publishing

Vertical Counter-Current Flow Fume Scrubber - Case Study

Samtec, Inc., located in New Albany, Indiana, is a leading manufacturer of high quality electrical connectors. Part of the production process at Samtec involves the operation of many electroplating lines and their associated exhaust and scrubbing equipment. In the Summer of 2000, Mr. Willis Tucker of Samtec found himself faced with mounting maintenance problems involving several existing ...

Dec. 30, 2020

By Midwest Air Products Co., Inc. (Mapco)

Mathematical models validation of aluminium electrolysis process using exergy method

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. 11, 2014

By Inderscience Publishers

Theory of nonequilibrium transient transport in nanostructures

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. 22, 2008

By Inderscience Publishers

Influence of wave and current flow on sediment-carrying capacity and sediment flux at the water–sediment interface

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. 29, 2014

By IWA Publishing

Approximate calculations of the transient electromagnetic response from buried conductors in conductive half-space note

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 modeling the ...

Jan. 18, 1984

By Geonics Limited

Rapid Start Lamps Vs Mercury Arc Lamp

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 speed the run up of the lamp from ...

Jul. 29, 2015

By Alpha-Purify

What is Equipment Grounding

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 grounding and protective grounding. Protective grounding is designed to prevent equipment from ...

Nov. 22, 2019

By Ningbo Zhenhai Beisuda Petrochemcial Equipment Co.,Ltd

Conductivity Theory and Measurement

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" ...

Jan. 1, 2005

By IC Controls Ltd.

Assessing seepage flow conditions through a dam quickly and accurately without drilling or drawing down the reservoir

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. 16, 2013

By Willowstick Technologies LLC

Origin of rippled scour depressions associated with cohesive sediments in a shoreface setting (eastern Bay of Seine, France)

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 ...

Feb. 1, 2005

By Springer-Verlag GmbH

Drone ESC

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 AUW; (3) Determine the battery voltage compatible with the motor; (4) ...

Sep. 3, 2019

By Shenzhen TitanFlying Technology Co., Ltd (TTF)

What Is Normally Closed And Normally Open In Basic Micro Switch?

One of the benefits of a micro switch is the fact that it can function as a detector. In such a case, it helps detect or sense the changes that are taking place within the components of a device or appliance. When this occurs, there is likely to be the flow or stoppage of current/electricity. It all depends on the changes that have been detected over a given period of time. Also, micro switches ...

Oct. 27, 2020

By Huizhou Unionwell Technology Co., Ltd

6 Typical electrical hazards in the workplace

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 contact is made with a live wire or equipment that is not grounded, ...

Jan. 16, 2017

By SafetySmart

Solving the Problem of Humidity

Conventional PIDs may use humidity suppression/compensation techniques but each of them has disadvantages: Humidity sensor – these typically have a slower response than the PID sensor itself which causes a drifting compensation Desiccant tube – these both slow the PID response and also reduce it by adsorption plus they need replacing from time to time which adds cost Humidify ...

Apr. 9, 2018

By Ion Science Ltd.

Linking the management of urban watersheds with the impacts on the receiving water bodies: the use of flow duration curves

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. 16, 2014

By IWA Publishing

A new strategy for determination of current efficiency during electro-oxidation of aromatic compounds in a packed-bed system

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 ...

Jan. 1, 2011

By IWA Publishing

Can I Connect A Micro Switch Terminals Without Soldering?

One of the most confusing components of a micro switch is its terminals. As simple as they may look or sound, it is very important you understand how to connect them in order to make your micro switch carry out its functions properly without interference. There are lots of people who make use of micro switches but still do not understand the right way of connecting their terminals for effective ...

Dec. 2, 2020

By Huizhou Unionwell Technology Co., Ltd

How Does A Micro Switch Work In Sliding Doors?

There is no doubt that people are loving the sliding door technology more than ever before. This could not have been possible without their wonderful functions. Some of them are energy efficiency, improved security, environmentally friendly, space saving and more. As a matter of fact, most people are now considering the option of using these doors. It does not matter whether you own a luxury home ...

Oct. 13, 2020

By Huizhou Unionwell Technology Co., Ltd

Verifying the Electrical Potential of Large Equipment

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 introduce measurement errors. By keeping the ...

Sep. 5, 2019

By Hioki USA Corporation