Propriedades Físicas da Madeira de Eucalyptus cloeziana F. Muell

Alves, Rejane Costa; Oliveira, Ana Lúcia Crespo; Carrasco, Edgar Vladimiro Mantilla

doi:10.1590/2179-8087.015312

Cited by 7 publications

(6 citation statements)

References 20 publications

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“…Tangential and radial shrinkage of A. maripa and A. speciosa were around 5%. These results are opposite to those found in solid timber, in which the tangential shrinkage is significantly greater than the radial (Alves et al 2017;Lengowski et al 2021). However, palm trees do not present growth rings and radial cells as in wood, which is why, possibly, the same relationship was not found in tangential and radial shrinkage.…”

Section: Chemical and Physical Propertiescontrasting

confidence: 79%

Evaluation of the potential use of Amazonian palm species for the production of edge-glued panels

Braga

Iwakiri

Trianoski

et al. 2022

International Wood Products Journal

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The potential of Attalea maripa and Attalea speciosa was evaluated for the production of edgeglued panels. The chemical and physical properties and the quality of the bonding of the species and mixed treatment between them, under different conditions, were evaluated. The length bonding was performed with polyvinyl acetate (PVA) adhesive and the side with PVA and emulsion polymer isocyanate (EPI) in two spreading rates. The species A. maripa has a lower content of extractives in cold and hot water, total extractives, ash and pH, and higher density compared to A. speciosa. The tangential, radial and volumetric shrinkage and shrinkage anisotropy of the species were statistically equal. On the length bonding, only in the tensile test after drying pre-treatment were the requirements of the technical standards not met. As regards side bonding, the treatments of A. maripa and mixed joints with EPI reached the standard for the pre-treatment in cold water.

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Section: Chemical and Physical Propertiescontrasting

confidence: 79%

Evaluation of the potential use of Amazonian palm species for the production of edge-glued panels

Braga

Iwakiri

Trianoski

et al. 2022

International Wood Products Journal

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“…The wood's basic density was determined according to Alves et al (2017). The wood's higher heating value (HHV) was determined according to ASTM D240-02 (2002), using dry grinded sifted material, with particle size between 40 and 60 mesh, in an adiabatic calorimeter.…”

Section: Methodsmentioning

confidence: 99%

Clonal selection of Corymbia for energy and charcoal production

Peres¹,

Carneiro²,

Figueiró³

et al. 2019

ADV. FOR. SCI.

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The genus Corymbia appears as an option to produce best quality charcoal. The selection of genotypes through multivariate analysis can be a solution when multiple variables influence the result. The aim of this study was to characterize eight genotypes of Corymbia citriodora x Corymbia torelliana for energy and charcoal production, group and indicate the genetic materials with highest potential. The woods specific gravity, high heating value and energy density was determined. Energy density was grouped by the Scott-Knott test; group 1 was appointed for energy generation. The wood was carbonized. Charcoal yield, density, fixed carbon, friability, higher heating value, ash content, fixed carbon yield and energy density were determined. Principal component analysis was performed. Principal component 3 was chosen, as the representation of the ideal genetic material. The scores were calculated, and genetic materials III, VI and VIII are selected for charcoal production. The selection has shown to be efficient.

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“…For the eucalyptus firewood, the boiler's fuel, it was informed by the boiler operator the feed is about 1 cubic meter per hour of firewood. Being the standard cubic meter of 850 kg in accordance with Alves (2017), approximately, the fuel mass flow is 0.24 kg.s -1 , as described in Table 1.…”

Section: Exergoeconomic Analysis In a Food Industry Boiler: A Case Studymentioning

confidence: 99%

Exergoeconomic analysis in a food industry boiler

Schwanz

Campos²,

Siqueira³

et al. 2022

Int J Innov Educ Res

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This study aims to apply the SPECO method in a firetube steam generating unit located in a food industry to measure the cost and to suggest actions that will increase its efficiency. In the current global scenario, researches for alternatives of the cost reduction and increased sustainability are more and more on the agenda in companies. Therefore, the present work develops a study to make possible the energy losses minimization in biomass boilers located in Saudali food industry, Ponte Nova (Minas Gerais, Brazil). The used methodology was developed from the exergoeconomic analysis using the Specific Exergy Costing (SPECO) method. To possibilitate this procedure it was necessary to map all the exergetic flows and to find its thermodynamic values. Regarding the fuel calorific potential, it was necessary the measurement of its average humidity, measured in (25 ± 1%), approximately, in order to obtain a Lower Calorific Power of 15960 kJ.kg-1. The massic and exergy flow rates values were defined using measurement equipments, thermodynamic tables and company’s information. The obtained results for exergetic efficiency, steam cost and fuel cost were, respectively, 51.74%, 0.0446 R$.(kWh)-1 and 0.01490 R$.(kWh)-1. These results evidenced a cost ratio between product and fuel of 1.99, which represents a product cost two times superior to the fuel cost, approximately. It is concluded that SPECO method application in Saudali industry evidenced important and often disregarded points, as the moisture interference in biomass available exergy and great variance between steam and fuel costs.

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Propriedades Físicas da Madeira de Eucalyptus cloeziana F. Muell

Cited by 7 publications

References 20 publications

Evaluation of the potential use of Amazonian palm species for the production of edge-glued panels

Evaluation of the potential use of Amazonian palm species for the production of edge-glued panels

Clonal selection of Corymbia for energy and charcoal production

Exergoeconomic analysis in a food industry boiler

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