Browsing by Author "Annamalai, S.J.K."

Now showing 1 - 8 of 8
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    Alternative uses of arecanut
    (2007-02-08) Nayar, N.M.; Annamalai, S.J.K.
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    Arecanut and Cocoa
    (2017) Annamalai, S.J.K.; Keshava Bhat, S.; Senthilkumar, T.; Ravindra Naik; Jaganathan, D.; Mathew, A.C
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    Design and development of a natural convection type low cost dryer for medium holdings
    (2007-02-08) Annamalai, S.J.K.; Narayana Swamy, K.G.; Patil, R.T.
    A simple and cheaper dryer working on indirect heating and natural convection principle using dry agricultural waste as fuel has been designed and developed to suit medium sized plantation crop holdings and processing units. The dryer consists of a drying chamber, burning cum heat exchanging unit and chimney. The dryer can hold 1000-1200 coconuts or 375 kg of ripe arecanuts per batch and the drying time required is about 33-37 hrs for copra and about 87 hrs for arecanut. As a preliminary study, the dryer was tested for drying 75 kg green cardamom in trays but slight discolouration of the product after drying was observed. The thermal efficiency of the dryer was 18.7-23.4%. The dryer costs about Rs.4000/- only and it requires an area of 7 m1 for housing. Economic analysts has shown that this dryer can be profitably used during monsoon months.
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    Developing an improved palm climbing device
    (2007-02-08) Annamalai, S.J.K.
    An attempt was made to develop an improved device for climbing of palms. The device comprises three major parts, namely, (1) Upper dutch around the trunk with handle and with independent clutching mechanism, (2) Lower clutch with platforms for footrest having arrangement for clutching with the trunk and (3) the body with collapsible lever mechanism connecting the top and bottom ring. The device will work on the principle of alternate clutching of upper and lower clutches and lifting of the device with the help of collapsible lever mechanism. The design of the device is described in this paper.
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    Glue adhesive properties of arecanut leaf sheath boards
    (2007-02) Annamalai, S.J.K.; Menon, S.R.K.; Nayar, N.M.
    3-ply arecanut leaf sheath boards were made at the laboratory with two veneers of arecanut leaf sheath and one veneer of wood under various combinations and with different glues namely starch glue (cold pressing), animal glue (cold pressing) poly vinyl acetate (Fevicol-Pidilite -cold pressing), Epoxy resin adhesive (Araldite-Ciba Geigy-cold processing) and urea formaldehyde (hot pressing). The boards were tested for their glue shear strength and water resistance in accordance with the IS specifications for tea-chest grade plywood. Areca sheath boards made with UF resin adhesive and wood veneer as core were found to have 50% more wet glue shear strength than the other areca sheath boards. Use of extenders like tamarind seed powder and deoiled sal meal up to 15 % to the UF resin adhesive and the type of wood used were found to have no adverse effect on the glue shear strength of the boards. Though the areca sheath boards satisfied only 50% of the IS requirements for tea chest grade plywood, they were found to have better wet glue shear strength over the locally purchased non-ISI grade tea chest plywood.
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    Other Uses of Arecanut
    (2007-02) Chempakam, B.; Annamalai, S.J.K.; Murthy, K.N.
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    Use of Areca leaf Sheaths for Making Plyboard and Packaging Materials
    (1982) Annamalai, S.J.K.; Nayar, N.M.
    Arecanut leaf sheath was found suitable for making plyboards. Two plies of processed arecanut leaf sheaths in combination with an ordinary wood veneer as core glued with urea formaldehyde resin are used for making the plyboards. These boards may be used for making packing cases like tea chests, suitcases etc. The process of making the plyboards and the properties of the boards as a packaging material are reported.