conductivity resistivity Articles
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FRP cooling tower vs stainless steel cooling tower
FRP, is Fiber-reinforced plastic, it composites by glass fiber and resin. It material feature is light, hard, non-conductive, corrosion-resistant. When FRP products are largely used it along with the waste problem. There will be a question how to solve the waste FRP. Traditional cooling tower is made of FRP. There will be a question how to solve the waste cooling tower. Understand the disposal ...
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Ion-Pair Conductivity Theory V: Critical Ion Size and Range of Ion-Pair Existence
There are two mechanisms by which ion size affects conductivity of liquids: hydrodynamic resistance, and electrostatic attraction between cation and anion that leads to the formation of ion-pairs. Increasing ion size reduces conductivity due to growing hydrodynamic resistance. On the other hand, increasing ion size reduces the probability of ion-pairs formation, which leads to higher ionic ...
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Development of Pd-coated ceramic electrodes in hybrid sulphur cycle
The Hybrid Sulphur (HyS) cycle has attracted much attention as a mass production process for hydrogen. It consists of an electrolysis step and a thermal decomposition one. In order to achieve high efficiency for hydrogen production and operational cost reduction, some developments in electrode materials with high corrosion resistance, high electrical conductivity and low anodic potential is a key ...
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The fundamental conductivity and resistivity of water
Pure water has a very low. but not quite zero, electrical conductivity. This conductivity provides a probe into fundamental properties of water, including the electrochemical mobility of the hydrogen and hydroxide ions. Deviation from this value is a measure of trace ionic impurities. Ultrapure water (UPW). with impurities at or below the sub-parts-per-billion range, is used extensively in many ...
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Constructal entransy dissipation minimisation for 'volume-point' heat conduction without the premise of optimised last-order construct
In the 'volume-point' heat conduction problem with a steady heat source, entransy dissipation reflects the mean temperature difference. By taking entransy dissipation as an optimisation objective, the high effective-conduction channel distribution has been optimised based on rectangular element, without the premise of an optimised last-order construct. A more optimal construct and the limit of ...
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High Thermal Conductive Silicon Pad
High thermal conductive silicone pad is a high thermal conductivity material. The raw material is made of Japan Electrochemical High Thermal Conductive Spherical Alumina Powder and Dow Corning Polymer. It is a cost-effective thermal gap filling material. The surface's natural micro-viscosity and softness can well fill the air gaps to transfer the heat between the heat source and the heat sink to ...
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Gold Fingers PCB
Among the large-scale use of PCI and optical modules and cable sockets, the gold fingers PCB has been divided into: long and short gold fingers, broken gold fingers, split gold fingers, gold finger plates in the process of processing, need to pull gold-plated wire, conventional gold finger processing is relatively simple, the length of the circuit board fingers require strict control of the gold ...
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Methods for Removing Signal Noise from Helicopter Electromagnetic Survey Data
A geophysical analysis was conducted over the abandoned T&T subsurface mines and portions of the Muddy and Roaring Creek watersheds in northeastern Preston County, West Virginia. The data were collected using helicopter-borne measurements of frequency-domain electromagnetic (FDEM) conductivity (390, 1555, 6254, 25,800, and 102,680 Hz). Noise was a significant issue in the lowest frequency EM ...
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Diamond Wire Drawing Die Blanks
The pcd wire drawing die blanks are produced under ultra-high temperature and ultra-high pressure. It consists of diamond powder and metal catalyst (Cobalt). It features high wear resistance, hardness and thermal conductivity, high mechanical strength, and tenacity. Diamond die blanks are mainly for drawing a wide range of wire such as copper, aluminum, nickel, stainless steel etc. As one of the ...
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What Gas Diffusion Layer (GDL) do I use for a Hydrogen Generator (Electrolyzer)?
We've spoken already about Gas Diffusion Layer (GDL) selection for a Fuel Cell; today we will cover some GDL considerations for Electrolyzers. The Hydrogen side (Cathode) of an Electrolyzer (EZ) can be almost any gas diffusion layer GDL (or even no GDL) that you would like and that fits your own mechanical design. This can be common GDL materials like Toray Paper, Sigracet, Freudenberg, AvCarb, ...
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Building Steel Structure Design
Metal Construction Color Options The outer walls and roof of the steel structure are made of galvanized color steel plates. Inside the factory, the surface of the steel plates has undergone a strict cleaning process. Painting and oven baking are carried out to fix the color. And during the processing, the uniformity of the surface paint is continuously monitored to ensure the ...
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Grounding Conductor
Copper-clad copperweld steel grounding material is a new material developed by Ningbo Zhenhai Beisuda Petrochemical Equipment Co.,Ltd. to replace pure copper. Copper clad ground wire has the following advantages: With high strength With low price High corrosion resistance High electrical conductivity of copper GROUNDING GROUND CONDUCTORS In recent years, the copper clad steel rod has been ...
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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" ...
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General Mapping Case Study
This is a collection of various cases where the 2D resistivity imaging method pioneered by Advanced Geosciences Inc have been successfully applied. Click on a section below and you will be shown a full 2D resistivity imaging brochure detailing the case in question. Acknowledgement: These cases have been submitted by satisfied customers whom we thank for permission to publish their data on the ...
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COPPER-CLAD STEEL GROUNDING CONDUCTORS
Copper clad steel grounding conductor is a new material developed by Ningbo Zhenhai Beisuda Petrochemical Equipment Co.,Ltd. to replace pure copper. Copper-clad copperweld steel copper clad rod has the following advantages: With high strength With low price High corrosion resistance High electrical conductivity of copper APPLICATIONS OF CCS GROUNDING GROUND CONDUCTORS In recent years, the copper ...
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CCS-Stranded Cable
Brief Instruction of Copper Clad Steel Stranded Wire The copper-clad strand wire is shaped like a cable, which is made of a plurality of copper-clad single wires. Because of its multi-stranded properties, the electrical conductivity and tensile strength are relatively good, and the cable copperweld can be customized to enhance the elongation rate by multiple heat treatment in the production ...
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1000 Series Aluminium Alloy Sheet
1000 series aluminum alloy sheets with at least 99% aluminum represent the purest of all commercial aluminum alloys. Aluminum plate 1000 series: 1050/1060/1070/1080/1085/1100/1200 Status: O, H14, H16, H24, H22, H26 Excellent elongation and tensile strength can meet general industrial needs. The 1050 Aluminum Sheet Plate are available in thicknesses ranging from 0.02mm to 4.5mm, with a maximum ...
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Basic Information of Pyrolytic boron nitride (PBN ceramic)
Pyrolytic boron nitride is an anisotropic high-temperature ceramic with high electrical resistance and good thermal conductivity. It is suitable for applications requiring high strength, low thermal expansion coefficient and good thermal shock resistance. Pyrolytic boron nitride also has thermal shock resistance and is a superior sealant that protects graphite from corrosive environments, such as ...
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The State of Carbon Fiber for Thermal Dissipation in LEDs
Light emitting diodes (LEDs) require efficient heat sinks in order to operate consistently. In an attempt to remedy concerns surrounding the efficiency of such components and to create a solid foundation for high-powered LED variants, manufacturers have been exploring new materials with exceptional thermal dissipating properties. Specifically, researchers have veered away from metals (copper ...
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Brief Instruction of Copper Clad Steel Stranded Wire
The copper-clad strand wire is shaped like a cable ccs, which is made of a plurality of copper-clad single wires. Because of its multi-stranded properties, the electrical conductivity and tensile strength are relatively good, and the product can be customized to enhance the elongation rate by multiple heat treatment in the production process, which has increased the strength and toughness of the ...
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