Development of an improved tray type mechanical copra dryer
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Date
2007-02-08
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Abstract
For drying the copra in rainy season without affecting the quality a tray type (mixed flow) mechanical dryer was develo-f ped at Central Plantation Crops Research Institute, Kasaragod, India. Electricity being the cheapest and no necessity of indirect heating ; was used as energy source. The dryer was fabricated from the materials such as wood, GI sheet, AC sheet, Asbestos rope and MS sheet. ;'- Components of the dryer were drying chamber, air distribution unit, plenum chamber, heating unit and blower. Drying chamber accomoda-X ted air distribution unit in the centre with copra trays on its both sides. The air was blown by 1.5 hp motor operated blower on 8 kW hea-[ lets. This hot air then was circulated through the material on the trays. The capacity of dryer was 1,000 nuts per batch and drying time I required was about 30 hours. The cost of the dryer was worked out to be Rs. 8,000 — and the cost of drying came to about Rs. 0.58 per kg
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Oleagineaux, 1984 v-39, 1: p-31-35