TESTS OF INVISIBLE LOSSES AND CLEANING EFFICIENCY DETERMINATION IN MECHANICAL SUGAR CANE HARVESTING WITH AND WITHOUT TRASH
DOI:
https://doi.org/10.18011/bioeng2007v1n2p93-102Keywords:
sugar cane harvester, extractor, mechanizationAbstract
In Brazil, the sugar cane industry processed 431.4 million tons of sugar cane during the harvestingseason 2005/2006. Nowadays, from 5 to 10% of this raw material is lost in the field when it is handor mechanically harvested respectively. Due to State law number 11.241 of 09/19/2002, after 2021burning sugar cane before harvesting will not be allowed, making it unfeasible for hand cut, thus harvesting system tend to become a 100% mechanized in feasible areas. This work quantified thein visible losses and cleaning efficiency in the cane processed by the harvester and compared the results with and without straw during the processing. The harvester, under controlled conditions, was tested at the maintenance workshop of Usina São João/Araras-SP. The tests of invisiblelosses in the harvesting system were initially conducted using clean canes (detrashed) and canes with leaves and tips. Invisible loss in the harvesting system varied from 1.2 to 2.4 %, and were larger when the cane was processed with the leaves. The cleaning efficiency of the raw material did not show significant statistical differences, but it was between 74 and 80% and in general, the loss and the cleaning efficiency were larger when using the higher rotation speed of the separatorfan (1350 rpm).
Downloads
References
ANUÁRIO BRASILEIRO DA CANA-DE-AÇÚCAR. Cultura de impacto, Santa Cruz do Sul, RS, p.12-13, 2005.
BRAUNBECK, O.A.; MAGALHÃES, P.S.G. Colheita sustentável com aproveitamento integral da cana. Visão Agrícola, Piracicaba, SP, v.1, n.1, p.72-79, 2004.
BURLEIGH & ASSOCIATES. A comparative evaluation of sugarcane harvesting and transport systemsfor use in the Brazilian sugar industry. São Paulo: Copersucar,1988. 54 p. (Relatório Técnico- Copersucar).
DICK, R.G. Potential losses higher whencharvesting green, BSES Bulletin, Australia, v.15, n.7, p.10-18, 1986.
FERNANDES, A.C.cQualidade tecnológicada cana-de-açúcar. Piracicaba: CTC/Copersucar, 1988. 88 p. (Relatório Técnicode Circulação Interna).
FERNANDES, A.C.; OLIVEIRA, E.R.; QUEIROZ, L. Sugarcane trash measurements in Brazil. In: INTERNATIONAL SOCIETY OF SUGARCANE TECHNOLOGISTS CONGRESS, 16., 1977, São Paulo. Proceedings... São Paulo: International Society of Sugar Cane Technologists, 1978, v.2.p. 1963-73.
NEVES, J.L. M.; MAGALHÃES, P.S.G.; MORAES, E. E.; MARCHI, A.S. Avaliação de perdas invisíveis de cana-de-açúcar no ssistemas da colhedora de cana picada. Engenharia Agrícola, Jaboticabal, SP, v.23, n.3, p.539-546, set./dez. 2003.
NEVES, J.L.M., MAGALHÃES, P.S.G.; MORAES, E.E., ARAUJO, F.V. Avaliação de perdas invisíveis na colheita mecanização em dois fluxos de massa decana-de-açúcar. Engenharia Agrícola, Jaboticabal, v.26, n.3, p.787-794, 2006.
YOUNGER, J.A. Quality cane and extraneous matter. In: INTERNATIONAL SOCIETY OF SUGARCANE TECHNOLO-GISTS, 17., 1980, Manila. Proceedings...Manila: International Society of Sugar CaneTechnologists, 1980. v.1, p.885-90.
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2007 The Authors
This work is licensed under a Creative Commons Attribution 4.0 International License.
By publishing in this journal, authors agree to the following terms:
a) Authors retain copyright and grant the journal the right of first publication. The work is simultaneously licensed under the Creative Commons Attribution License, which permits sharing and adaptation of the work with appropriate credit to the authors and the journal.
b) Authors may enter into separate, additional agreements for non-exclusive distribution of the published version of the work (e.g., posting to an institutional repository or inclusion in a book), provided that proper credit is given to the original publication in this journal.
