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The impact of dielectrics on the electrical capacity, concentration, efficiency ozone generation for the plasma reactor with mesh electrodes

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Plasma Science and Technology 2018年第8期20卷 89-95页

作者： Ernest GNAPOWSKI Sebastian GNAPOWSKI Jaroslaw PYTKA University College of Enterprise and Administration in Lublin Bursaki 12 20-150 Lublin Poland Fundamentals of Technology Faculty Lublin University of Technology ul. Nadbystrzycka 38 20-618 Lublin Poland Faculty of Mechanical Engineering Lublin University of Technology ul. Nadbystrzycka 36 20-618 Lublin Poland

This paper presents experimental results concerning the effect of dielectric type on ozone concentration and the efficiency of its generation in plasma reactor with two mesh *** types of dielectric solid were used in the study; glass, micanite and Kapton insulating foil. The experiments were conducted for voltage ranges from 2.3 to 13 k V. A plasma reactor equipped with two 0.3×0.3 mm^2 mesh electrodes made of acid resistant AISI 304 mesh was used in the experiments. The influence of the dielectric type on the concentration and efficiency of ozone generation was described. The resulting maximum concentration of the ozone was about 2.70–9.30 g O3 m^-3, depending on the dielectrics used. The difference between the maximum and the minimum ozone concentration depends on the dielectric used,this accounts for 70% at the variance. The reactor capacity has also been described in the paper; total Ct and dielectric capacitance Cd depending on the dielectric used and its thickness.

关键词： ozone generation efficiency dielectric mesh electrode ozone generator electrical capacity

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Piezoresistive Response Extraction for Smart Cement-based Composites/Sensors

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Journal of Wuhan University of Technology(Materials Science) 2012年第4期27卷 754-757页

作者：韩宝国 School of Civil Engineering Harbin Institute of Technology

A kind of piezoresistive response extraction method for smart cement-based composites/sensors was *** kinds of typical piezoresistive cement-based composites/sensors were fabricated by respectively adding carbon nanotubes and nickel powders as conductive fillers into cement paste or cement *** variation in measured electrical resistance of such cement-based composites/sensors was explored without loading and under repeated compressive loading and impulsive *** experimental results indicate that the measured electrical resistance of piezoresistive cement-based composites/sensors exhibits a two-stage variation trend of fast increase and steady increase with measurement time without loading,and an irreversible increase after *** results from polarization caused by ionic conduction in these composites/*** reaching a plateau,the measured electrical resistance can be divided into an electrical resistance part and an electrical capacity *** piezoresistive responses of electrical resistance part in measured electrical resistance to loading can be extracted by eliminating the linear electrical capacity part in measured electrical resistance.

关键词： signal extraction cement-based composites/sensors piezoresistivity polarization electrical resistance electrical capacity

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Energy Outlook in East Africa Region and the Carbon Emissions for Conventional En-ergy Projection (Part I)

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Journal of Power and Energy Engineering 2016年第7期4卷 32-41页

作者： Mwongereza Jean d’Amour Aissa Boudjella Pan African University Institute of Water and Energy Science (PAUWES) Tlemcen University Tlemcen Algeria Bircham International University Madrid Spain

In this investigation, we focus on the current energy sources and future projects situation in East Africa up to 2040. Electricity generation potential of energy mix and electrical capacity will be analyzed. For both electricity generation and electrical capacity, the data source shows that some forms of energies such bio-energy, solar PV, etc. will contribute less as well as with insignificant contribution of nuclear energy. Whereas hydro is dominating comparing with gas, oil, coal, solar PV, bio-energy and other renewables energies. From 2000 up to 2012, hydro and oil were only the one source of electricity generation. Starting from 2020, other forms of energies will appear and continue to increase at different rate. The international trade of electricity in this region will appear in 2020 and continue to increase as predicted by the data. Up to 2040, hydro will play a big role in electricity generation with other renewable energy sources, such as coal, oil, Gas, bio- energy and solar PV that will continue to increase at different rate. The share of solar PV in energy generation will slowly increase compared to other sources. The capacity of hydro and renewable energy sources will be high compared with other sources of energy such as bioenergy, coal, oil, PV solar, and gas. The results show also that bio-energy will increase slowly in electricity generation in comparison with other source of energies. The present report shows that oil will continue to emit a lot carbon dioxide compared to gas and coal. The emission of CO2 from total final consumption (TFC) of oil will continue to be high in comparing with CO2 emission from power generation (PG) of oil. But the emission of carbon dioxide from power generation of coal from 2025 until 2040 will be high compared with emission of CO2 generated from FTC of coal. In this period, the emission from TFC for gas will remain insignificant. The total final consumption emission of oil in general

关键词： Electricity Generation electrical capacity Renewable Energy Carbon Dioxide Emissions

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