Soil corrosion of the AISI1020 steel buried near electrical power transmission line towers

Fraga, Anderson de Oliveira; Klunk, Marcos Antônio; Oliveira, Adriano Agnoletto; Furtado, Gilnei Goncalves; Knörnschild, Gerhard Hans; Dick, Luís Frederico Pinheiro

doi:10.1590/1516-1439.305714

Cited by 8 publications

(5 citation statements)

References 13 publications

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“…The electric power was measured in the mills (1 and 2) and in the eco firewood using ET-5060C/ET-5060 Power Quality Analyzer -Minipa TM equipment to calculate the electric energy consumption in the production. The energy released by the equipment was calculated by the integral of the active power (W) during the operation time (Fraga et al, 2014;Klunk et al, 2012). Thus, the energy consumed by equipment was calculated by the equation:…”

Section: Hc (%) = 100 -(Insoluble Lignin Content + Total Extractive Content)mentioning

confidence: 99%

New Parameters for the Forest Biomass Waste Ecofirewood Manufacturing Process Optimization

Ruoso¹,

Bitencourt²,

Sudati³

et al. 2019

PTQ

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Biomass has a large share in the energy generation matrix, due to the regional economic benefits. This work has as main objective to evaluate the parameters used in the manufacture of briquettes produced with forest residues and the economic engineering for the manufacturer. The forest residues were: wood chips and chips of Eucalyptus spp. and barks of Pinus taeda. The evaluations were the chemical characterization of forest residues and the costs involved in the briquetting process. The forest residues presented extractive chemical composition and lignin. The production costs of the briquettes were affected mainly by the equipment, being the Pinus taeda barks the one that presented higher production cost. However, the production costs obtained in this study are approximately 20% lower than the production costs using traditional methods for forest firewood. The energy value from biomass allows the reduction of the dependence of energy, which can be used for the generation of steam or electricity, for subsistence. A fact for energy conversion is to evaluate the material moisture. It is suitable to burn residues with moisture between 45 to 55%. The consumed electric energy is important to evaluate the total costs. The energy required depends on the quality of raw material and the system employed. Forest residues is an important source for eco firewood production, contributing to energy generation and decreasing of the solid waste stored at the company. In this way, the new parameters for briquetting biomass forest wastes shown in this work, which is an important stage of the process, make economically viable and environmentally suitable the eco firewood production.

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Section: Hc (%) = 100 -(Insoluble Lignin Content + Total Extractive Content)mentioning

confidence: 99%

New Parameters for the Forest Biomass Waste Ecofirewood Manufacturing Process Optimization

Ruoso¹,

Bitencourt²,

Sudati³

et al. 2019

PTQ

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“…Thus, this type of equipment has been applied in different industrial segments such as paper, food, and ceramic [26][27][28]. Among the parameters that affect the operation of porous burners, the material, the porosity, and the equivalence ratio stand out [29][30][31]. Therefore, understanding their influence on radiant energy emission is of fundamental importance for the optimization of this equipment [32][33][34].…”

Section: Introductionmentioning

confidence: 99%

Experimental Assessment of Thermal Radiation Behavior Emitted by Solid Porous Material

Caetano¹,

Lorenzini²,

Lhamby³

et al. 2020

IJHT

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Porous media burners have been the focus of many studies due to the advantage in different applications in industry, which exhibit a directional emission of thermal radiation and low emission of pollutants. Indeed, these characteristics yields benefits regarding productivity by an environment friendly process. Thus, this work analyzes the behavior of radiation heat flux emitted by materials of different linear densities and porosities, varying the rate of air/fuel mixture and the flame power. In this way, was constructed an experimental setup that consists in a supply system of air/fuel, data acquisition, burner support for the radiation sensor, and the radiometer. This structure enables the displacement from 0°C to 90°C allowing the analysis of radiation in the area of a semisphere. The results shown that the silicon carbide has higher radiation efficiency than zirconia, due the higher thermal conductivity and emissivity. However, the silicon carbide degraded in one of the measurements. The ZrO2 media has proved challenging to stabilize for equivalence ratios below 0.6. Regarding the porosity, it is concluded that the higher the porosity, the greater the radiation efficiency, the expected result because there is a larger contact area for the reaction to occur within the pores.

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“…Although Brazilian coal has low calorific value, the availability of reserves and the development of less polluting technologies suggest thermal generation as an excellent expansion potential [16][17][18][19]. The Brazilian electricity sector emitted an average of 101.3 kg CO2 to produce 1 MWh, a low rate compared to the European Union, the United States of America, and China [20,21]. The coal production chain has the challenge of guaranteeing its activities, by adapting the thermoelectric plants in operation to the clean technologies available, encouraging the application in future projects [22].…”

Section: Introductionmentioning

confidence: 99%

Hierarchical Criticality Analysis of Clean Technologies Applied to a Coal-Fired Power Plant

Oliveira¹,

Lorenzini²,

Shah³

et al. 2020

IJDNE

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Mineral coal is the main source of energy generation in the world. In Brazil, this energy source has a smaller share in the internal energy supply, 5.5% of the total. Despite this, issues of energy security, stable and low prices make coal a strategic source. Due to this source's importance, this work aims to evaluate the clean technologies used to mitigate the emission resulting from the combustion of coal from a thermoelectric plant that applies low quality coal in Brazil using an analytical hierarchy process to classify the viable technological alternatives for the production process. The articulation of the environmental management system was adequate to meet the environmental demands and the energy efficiency of the thermoelectric plant. However, the results suggest that the investment in a coal processing plant would increase the fuel quality, a critical factor in the reduction of operating milling costs, in the ash circuit, and the treatment of gaseous emissions.

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Soil corrosion of the AISI1020 steel buried near electrical power transmission line towers

Cited by 8 publications

References 13 publications

New Parameters for the Forest Biomass Waste Ecofirewood Manufacturing Process Optimization

New Parameters for the Forest Biomass Waste Ecofirewood Manufacturing Process Optimization

Experimental Assessment of Thermal Radiation Behavior Emitted by Solid Porous Material

Hierarchical Criticality Analysis of Clean Technologies Applied to a Coal-Fired Power Plant

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