Qualidade Da Colheita Mecanizada De Cana-De-Açúcar Em Função Da Velocidade De Deslocamento E Rotação Do Motor Da Colhedora

Ramos, Carlos Renato Guedes; Lanças, Kléber Pereira; Lyra, Gabriel Albuquerque de; Millani, Thaís Maria

doi:10.17224/energagric.2014v29n2p87-94

Cited by 6 publications

(3 citation statements)

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“…However, the authors claim that, at this harvesting rate, the amount of collected billets decreases to 50%, while it varies around 85% at a harvesting rate of up to 20 t h -1 . These results are different from those reported by Ramos et al (2014), who evaluated the quality of mechanized harvest and obtained 85% of presence of billets, regardless of the variation in speed.…”

Section: Methodscontrasting

confidence: 99%

Fuel consumption of a sugarcane harvester in different operational settings

Ramos

Lanças

Lyra

et al. 2016

Rev. bras. eng. agríc. ambient.

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A B S T R A C TThe interventions performed during the mechanized harvesting are essential to improve the operational performance of sugarcane harvesters and reduce operational costs. The objective of the present study was to evaluate the fuel consumption of a sugarcane harvester in different forward speeds and engine rotations. Harvesting was conducted in a green cane plot, with the variety RB 855156. Flow meters were installed in the harvester's fuel supply system and an electronic device was used for data acquisition. The experiment was carried out in a completely randomized design in a factorial scheme (3 x 2), using three engine rotations and two forward speeds, with six replicates. Harvesting capacity and fuel consumption per hour, per area and per ton of harvested sugarcane were analyzed. The results were subjected to analysis of variance and means were compared by Tukey test. The variations in engine rotation did not affect the performance for harvesting capacity, but influenced fuel consumption. Forward speed influenced both harvesting capacity and fuel consumption.Consumo de combustível de uma colhedora de cana-de-açúcar em diferentes configurações de operação R E S U M O As intervenções realizadas durante a colheita mecanizada são fundamentais para a melhoria do desempenho operacional das colhedoras de cana-de-açúcar e redução dos custos desta operação. O objetivo foi avaliar o consumo de combustível de uma colhedora de cana-deaçúcar em diferentes velocidades de trabalho e rotações do motor. A colheita foi realizada em canavial sem queima prévia cuja variedade foi a RB 855156. Foram instalados medidores de fluxo no sistema de alimentação de combustível da colhedora e utilizado equipamento eletrônico para aquisição dos dados. O experimento foi conduzido em delineamento inteiramente casualizado em arranjo fatorial 3 x 2 usando três rotações do motor e duas velocidades de trabalho, com seis repetições. Foram avaliados a capacidade de colheita e o consumo de combustível horário, por área e por tonelada colhida. Os resultados foram submetidos à análise de variância e as médias comparadas pelo teste de Tukey. As variações na rotação do motor não interferiram no desempenho para capacidade de colheita, porém influenciaram significativamente o consumo de combustível da colhedora; já a velocidade influenciou tanto a capacidade de colheita como o consumo de combustível.

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Section: Methodscontrasting

confidence: 99%

Fuel consumption of a sugarcane harvester in different operational settings

Ramos

Lanças

Lyra

et al. 2016

Rev. bras. eng. agríc. ambient.

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“…In cane fields where plants have a more upright growing habit, using tip cutters prevents the loading of such vegetal material into the cargo trucks and, consequently, vegetable impurity values become lower (RAMOS et al, 2014).…”

Section: Resultsmentioning

confidence: 99%

Shifts and Harvesting Systems on Quality of Impurities Samples in Sugarcane

et al. 2017

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Semi-mechanical and mechanical harvesting methods may influence the content of impurities in harvested sugarcane. This study aimed to evaluate the quality of three mechanical methods of sugarcane harvesting: one semi-mechanical, and two mechanical ones -self-performed and outsourced, during three working shifts. As quality indicators, both mineral and vegetal impurities were accounted. About 50 random samples were collected in the studied area during 35 harvest days and in three working shifts, for each harvesting method. Mineral impurities showed similar behavior for both self-performed and outsourced mechanical harvesting, thus displaying a low variability. On the other hand, vegetal impurities showed to be unstable for all three shifts. Additionally, the statistical process control analysis showed that the semi-mechanical method had the greatest variability.

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“…SILVA, 2004) 0.82 -0.97 1. 04 -1.26 (MACEDO;SILVA, 2008) 0.97 4.39 (SEABRA et al, 2011) 1.33 1.04 (SOARES et al, 2009) 0.98 0.9 3.5 (NOVACANA, 2017) 1.01-1.49 0.99 (GONÇALVES, 2012) 0.816 -0.628 0.90 (RAMOS, 2013) 0.82-1.16 (BANCHI et al, 2012) 1. 449-2.996 (SCHEIDL et al, 2015) 0.55 1.02 Author 's survey 0.97-1.04 1.19-1.22 3.55 -3.90 Purified biogas from the vinasse anaerobic digestion can be used to replace diesel in the sugarcane transportation and harvesting process.…”

Section: Introductionmentioning

confidence: 99%

Prospective study on production and use of biogas from vinasse

Vinicius da Silva Neto

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This work focusses on biogas production from vinasse (by-product derived from ethanol distillation) with objectives of: presenting a more accurate mathematical model of anaerobic digestion of vinasse; assessing greenhouse gases and energy balances of ethanol when vinasse biogas is produced and used; and assessing the benefits of vinasse biogas used as a substitute for fossil oil and natural gas as energy source. A mathematical model of the anaerobic digestion that includes, besides methane and carbon dioxide, the hydrogen sulfide content on biogas and calculates reactors efficiency based on anaerobic biomass retention is presented. The model was calibrated and validated against data from a large-scale anaerobic reactor processing sugarcane vinasse. Comparative scenarios and set-ups were simulated to investigate the reactor's performance. Biogas flow, methane content, and yield with and without a settler were evaluated. Quality of predictions was assessed, showing high accuracy for CH4 predictions and medium accuracy for H2S and biogas flow predictions. The optimised modelled reactor was able to produce 83% more methane per volume of reactor with half the retention time. Within the distilleries, the Energy Balance (EB) and Greenhouse Gases Emissions Avoided (GHGEA) of sugarcane ethanol were calculated, including the vinasse biogas, to assess potential benefits.Biogas from vinasse was considered producing electricity or biomethane. Results show that biogas from vinasse can represent improvement in both indicators, which ranges from 3.5% improvement in EB by electricity generation with biogas to 27.5% improvement in GHGEA by replacing diesel in the mill operations. After, the use of vinasse biogas for power generation is examined and compared with fossil oil power plants in terms of energy, costs and greenhouse gas emissions in Brazil, suggesting a program to replace expensive oil power plants by biogas plants with expressive benefits in all aspects. Also, the possibility of using vinasse biomethane to replace natural gas in São Paulo State is evaluated, presenting an incentive program to this new source of energy that could promote considerable emissions reductions. Furthermore, the relation of biogas to ethanol in terms of energy supply in the next years is evaluated, showing that substantial additional energy can be obtained, and larger amounts of fossil fuels can thus be replaced.

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Qualidade Da Colheita Mecanizada De Cana-De-Açúcar Em Função Da Velocidade De Deslocamento E Rotação Do Motor Da Colhedora

Cited by 6 publications

References 0 publications

Fuel consumption of a sugarcane harvester in different operational settings

Fuel consumption of a sugarcane harvester in different operational settings

Shifts and Harvesting Systems on Quality of Impurities Samples in Sugarcane

Prospective study on production and use of biogas from vinasse

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