Normal view MARC view ISBD view

Development and testing of a continuous power operated coconut husker (Record no. 28150)

MARC details
000 -LEADER
fixed length control field	02809nam a2200193Ia 4500
003 - CONTROL NUMBER IDENTIFIER
control field	OSt
005 - DATE AND TIME OF LATEST TRANSACTION
control field	20220330103653.0
008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION
fixed length control field	140128s9999 xx 000 0 und d
082 ## - DEWEY DECIMAL CLASSIFICATION NUMBER
Classification number	631.3
Item number	ANU/DE
100 ## - MAIN ENTRY--PERSONAL NAME
Personal name	Anu S Chandran
245 ## - TITLE STATEMENT
Title	Development and testing of a continuous power operated coconut husker
260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT)
Place of publication, distribution, etc.	Tavanur
Name of publisher, distributor, etc.	Department of Farm Power Machinery and Energy, Kelappaji College of Agricultural Engineering and Technology
Date of publication, distribution, etc.	2012
300 ## - PHYSICAL DESCRIPTION
Extent	102
502 ## - DISSERTATION NOTE
Degree type	MTech.
520 3# - SUMMARY, ETC.
Summary, etc.	A continuous power operated coconut husking machine for large scale husking of coconuts was developed, tested and its performance evaluated. The major parts are feeding chute, a husking unit, a husk separating unit and power transmission unit. The coconut fed at the feeding chute and in the clearance between the inlet and the drum is slightly compressed and forced to execute rolling or revolutions. In the process, the blade penetrates the husk and punctures it along different planes. The shear force exerted upon the coconut by the blades of the rotating drum and the concave cause to rip open the husk along different planes. The full coconuts with punctured and softened husk fall into the husk separating unit which consists of two knurling rollers. There the softened and punctured husk is separated and the nut emerges at the outlet. The prime mover used is a 3 φ squirrel cage induction motor of 2.2 kW. This rotation is bifurcated to rotate the husking unit and to the separating unit. A speed reduction unit with gear ratio of 30:1 is used to reduce the motor speed from 1440 rpm to 48 rpm. The speed of the motor is also bypassed to the knurling rollers by means of chain drive, by which the speed is reduced from 1440 to 160 rpm through chain and sprockets units. All components are fixed on the frame. The studies show that the minimum and maximum time required for complete husking of a green coconut were 6 s and 22 s and that for a dry coconut was 3 s and 15 s respectively. Thus the mean time required for complete husking of green coconut is 11.6 s and that of dry coconut is 9.5 s. The average capacity of continuous power operated coconut husking machine is much better and found out as 356 nuts per hour compared to the manual method and by husking by commercial model. Also the efficiency, the percentage of nut breaking and the average energy requirement was 82.79 %, 3.83 % and 0.7365 W respectively. The total operating cost of continuous power operated coconut husking machine is Rs. 95.374 per hour and the cost of husking per nut is about Rs. 0.267. Considering its performances, the mechanism developed in this study is promising.
700 ## - ADDED ENTRY--PERSONAL NAME
Personal name	Jayan P R (Guide)
856 ## - ELECTRONIC LOCATION AND ACCESS
Uniform Resource Identifier	<a href="http://krishikosh.egranth.ac.in/handle/1/5810063016">http://krishikosh.egranth.ac.in/handle/1/5810063016</a>
942 ## - ADDED ENTRY ELEMENTS (KOHA)
Source of classification or shelving scheme	Dewey Decimal Classification
Koha item type	Theses

Holdings
Withdrawn status	Lost status	Source of classification or shelving scheme	Damaged status	Not for loan	Home library	Current library	Shelving location	Date acquired	Total Checkouts	Full call number	Barcode	Date last seen	Price effective from	Koha item type
		Dewey Decimal Classification			KAU Central Library, Thrissur	KAU Central Library, Thrissur	Theses	18/03/2014		631.3 ANU/DE	173211	18/03/2014	18/03/2014	Theses