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Design, construction and evaluation of a manually operated coffee pulper / Arnold G. Mojica.

By:

Mojica, Arnold G [author]

Contributor(s):

Barcelon, Eufemio G [adviser]

Material type: Text

TextLanguage: English Publication details: Indang, Cavite : 1990. Cavite State University- Main Campus,Description: 68 pages : illustrations ; 28 cmContent type:

text

Media type:

unmediated

Carrier type:

volume

Subject(s):

DDC classification:

631.3 M72 1990

Online resources:

Click here to view thesis abstract and table of contents

Production credits:

College of Agriculture, Food, Environment and Natural Resources (CAFENR)

Abstract: MOJICA, ARNOLD GINETE, Don Severino Agricultural College, Indang, Cavite, April, 1990. DESIGN, CONSTRUCTION AND EVALUATION OF A MANUALLY OPERATED COFFEE PULPER. Adviser: Engr. Eufemio G. Barcelon. The design, construction and evaluation of manually operated coffee pulper was conducted to determine the performance capacity, machine efficiency and cost analysis obtained from using two varieties of coffee and throe angular speed. Results showed that excelsa coffee variety greatly varied in feeding capacity and machine efficiency over that of robusta coffee variety. Generally the former could be pulped two times greater in beans capacity than the latter. Excelsa variety could pulp 1.14 times greater in machine efficiency than robusta variety. Using the machine, the capacities obtained were :32.12 kg/hr for excelsa variety and 16.79 kg/hr for robusta variety, while efficiencies were 78.145 for excelsa and 68.-Y3 for robusta variety. . Likewise, the angular speeds greatly influenced fthe feeding ccapacity and machine efficiency. The speed of 100 rpm had the highest feeding Lq/hr:, while the ,west was noted on capacity. of tne The angular of 100 rpm had the highest efficiency (77.78r1.), while the lowest was obtained on the lowest speed(50 rpm) with 64.74% machine efficiency. The highest feeding capacity of 34.24 kg/hr was obtained from 100 rpm using excelsa variety. The effect of coffee variety at high speed on capacity was offset by the clearance of the cylindrical drum and the stationary wall s they pulped the coffee beans. Based on results there is a need of improving the pulping mechanism to match with the bulk of beans pulped by the machine. Cost analysis of the machine showed relevance to the farmers owning small piece of land. The machine cost P 1,050.00 where the pay back period was three months and can gain an annual net income of P4,189.80 by pulping at 8 hours per day.

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Holdings ( 1 )
Title notes ( 5 )

Holdings
Item type	Current library	Collection	Call number	Materials specified	URL	Status	Notes	Date due	Barcode
Theses / Manuscripts	Ladislao N. Diwa Memorial Library Theses Section	Non-fiction	631.3 M72 1990 (Browse shelf(Opens below))		Link to resource	Room use only	T-1066		00002115

Thesis (BSAE - - Crop Processing) Don Severino Agricultural College.

Includes bibliographical references.

College of Agriculture, Food, Environment and Natural Resources (CAFENR)

MOJICA, ARNOLD GINETE, Don Severino Agricultural College, Indang, Cavite, April, 1990. DESIGN, CONSTRUCTION AND EVALUATION OF A MANUALLY OPERATED COFFEE PULPER. Adviser: Engr. Eufemio G. Barcelon.

The design, construction and evaluation of manually operated coffee pulper was conducted to determine the performance capacity, machine efficiency and cost analysis obtained from using two varieties of coffee and throe angular speed. Results showed that excelsa coffee variety greatly varied in feeding capacity and machine efficiency over that of robusta coffee variety. Generally the former could be pulped two times greater in beans capacity than the latter. Excelsa variety could pulp 1.14 times greater in machine efficiency than robusta variety. Using the machine, the capacities obtained were :32.12 kg/hr for excelsa variety and 16.79 kg/hr for robusta variety, while efficiencies were 78.145 for excelsa and 68.-Y3 for robusta variety. .
Likewise, the angular speeds greatly influenced fthe feeding ccapacity and machine efficiency. The speed of 100 rpm had the highest feeding Lq/hr:, while the ,west was noted on capacity. of tne The angular of 100 rpm had the highest efficiency (77.78r1.), while the lowest was obtained on the lowest speed(50 rpm) with 64.74% machine efficiency. The highest feeding capacity of 34.24 kg/hr was obtained from 100 rpm using excelsa variety. The effect of coffee variety at high speed on capacity was offset by the clearance of the cylindrical drum and the stationary wall s they pulped the coffee beans.
Based on results there is a need of improving the pulping mechanism to match with the bulk of beans pulped by the machine. Cost analysis of the machine showed relevance to the farmers owning small piece of land. The machine cost P 1,050.00 where the pay back period was three months and can gain an annual net income of P4,189.80 by pulping at 8 hours per day.

Submitted to the University Library April 11, 1990 T-1066