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Performance evaluation of power operated beating and decorticating machine for production of coconut coir

By: Contributor(s): Material type: ArticleArticleLanguage: English Publication details: Bangladesh : Bangladesh Agricultural Research Institute, 2007.ISSN:
  • 0258-7122
  • 2408-8293 (Online)
Subject(s): In: Bangladesh Journal of Agricultural Research v. 32, no. 1, p. 71-80Summary: Coir is an important product that is obtained by decorticating coconut husk. Quality of coir depends on processing method and quality of coconut husks. Manual and mechanical methods are traditionally used for coir processing. In most of the areas, coir is separated from husk manually, which is a time consuming process. Imported decorticator and beating machines are costly and not available in Bangladesh. Two sets of decorticator and two sets of beating machines were fabricated in a local workshop as per Vietnam decorticator and beating machines. The machines were made of M. S. sheet, M. S. angle, self-centre bearing, M. S. shaft, etc. The prototypes were installed in Khulna and Barisal to evaluate their performances. In Khulna, the machines were operated by a 18 kW diesel engine and in Barisal those were operated by a 15kW electric motor alternately changing by belt of the pulley. The average capacity of both electric motor and diesel engine operated beating machines was 2500 husks per hour. The average capacities of electric motor and diesel engine operated decorticating machines were 58 kg and 60 kg coir per hour, respectively. The quality of crushed husk and coir were better than traditional practices. The coir quality of green coconut husk was better than brown coconut husk, which was finer than traditional practices. The operating cost of coir production was lower than those of traditional practices. The maximum net benefit Tk. 413,155/yr was obtained from diesel engine operated decorticator followed by motor driven decorticator Tk. 355,933/yr, traditional machine Tk. 212,505/yr, and manual Tk. 1,224/yr. The benefit cost ratio (BCR) of BARI prototypes was found to be higher (l.95) than those of traditional (1.57) and manual method (1.08). The break-even point was 650·kg coir per year for engine and motor operated BARI decorticator. Price of BARI decorticator and beating machine with engine and motor were Tk. 100,000 and Tk. 110,000, respectively.
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Coir is an important product that is obtained by decorticating coconut husk. Quality of coir depends on processing method and quality of coconut husks. Manual and mechanical methods are traditionally used for coir processing. In most of the areas, coir is separated from husk manually, which is a time consuming process. Imported decorticator and beating machines are costly and not available in Bangladesh. Two sets of decorticator and two sets of beating machines were fabricated in a local workshop as per Vietnam decorticator and beating machines. The machines were made of M. S. sheet, M. S. angle, self-centre bearing, M. S. shaft, etc. The prototypes were installed in Khulna and Barisal to evaluate their performances. In Khulna, the machines were operated by a 18 kW diesel engine and in Barisal those were operated by a 15kW electric motor alternately changing by belt of the pulley. The average capacity of both electric motor and diesel engine operated beating machines was 2500 husks per hour. The average capacities of electric motor and diesel engine operated decorticating machines were 58 kg and 60 kg coir per hour, respectively. The quality of crushed husk and coir were better than traditional practices. The coir quality of green coconut husk was better than brown coconut husk, which was finer than traditional practices. The operating cost of coir production was lower than those of traditional practices. The maximum net benefit Tk. 413,155/yr was obtained from diesel engine operated decorticator followed by motor driven decorticator Tk. 355,933/yr, traditional machine Tk. 212,505/yr, and manual Tk. 1,224/yr. The benefit cost ratio (BCR) of BARI prototypes was found to be higher (l.95) than those of traditional (1.57) and manual method (1.08). The break-even point was 650·kg coir per year for engine and motor operated BARI decorticator. Price of BARI decorticator and beating machine with engine and motor were Tk. 100,000 and Tk. 110,000, respectively.

Text in English

Matin, Md.A. : No CIMMYT Affiliation

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