Improvement and testing of a motor-operated coffee roaster / Alvin E. Espiritu and Emerson M. Rupido.
Material type:
TextLanguage: English Publication details: Indang, Cavite : 2003. Cavite State University- Main Campus,Description: xii, 101 pages : illustrations ; 28 cmContent type: - text
- unmediated
- volume
- 631.3 Es6A 2003
- College of Engineering and Information Technology (CEIT)
| Item type | Current library | Call number | Materials specified | URL | Status | Notes | Date due | Barcode |
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Theses / Manuscripts
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Ladislao N. Diwa Memorial Library Theses Section | 631.3 Es6A 2003 (Browse shelf(Opens below)) | Link to resource | Room use only | T-2568 | 00002921 |
Thesis (Bachelor of Science in Agricultural Engineering) Cavite State University.
Includes bibliographical references.
College of Engineering and Information Technology (CEIT)
ESPIRITU, ALVIN E. and RUPIDO, EMERSON MOJICA. Cavite State University, Indang, Cavite, April 2003. "Improvement and Testing of a Motor- Operated Coffee Roaster". Adviser: Dr Marilyn M. Escobar.
This thesis entitled "Improvement and testing of a motor-operated coffee roaster" was conducted from December 2002 to February 2003 at the Agricultural Engineering Techno-Demo Area, Department of Agricultural and Food engineering, (DAFE), College of Engineering and Information Technology (CEIT), Cavite State University (CvSU), Indang, Cavite. It aimed to improve and construct a motor- operated coffee roaster. The roaster was tested using coffee green beans with initial moisture content of 12%wet basis. Kerosene was used as a fuel to provide a better heating source at a temperature of 200C- 210 C. The parameter used was the angular speed with three levels: RPM1 (30 rpm), RPM2 (40 rpm) and RPM3 (50 rpm) to produce light roast, medium roast and dark roast. Results showed that the shortest time was at angular speed of 30 rpm with a mean value of 18.333 min for light roast, 21.367min for medium roast and 24.683 for dark roast. The highest roasting time was that angular speed of 50 rpm with a mean value 21.083 mi8n, 25.083 min and 28.333 to produce light, medium and dark, respectively. The highest mean value was obtained at angular speed of 30 rpm, which gave a mean value of 37.18 kg/hr. for light roast, 31.60 kg/hr for medium roast and 26.84 for dark roast. The highest roasting efficiency was obtained at angular speed of 30 rpm with a mean value of 94.03%, 92.53% and 90.53%, respectively. Based on the result on the cup quality in terms coffee aroma, acidity and flavor the "Well-Trained Panel” has higher mean value compared to the mean value of "Not- Trained Panel". Cost return analysis showed that the machine is applicable to small-scale farms. The machine has an initial investment of Php 35, 093.75. Then the machine has a payback period 0.7828 years. The break-even point was calculated to be 144 hrs. per year. The benefit cost ratio of the machine was 1.42. The results revealed that the machine is profitable to use in small-scale farms because it consumes time, less labor cost with a high yield production. Cost return analysis showed that the machine is applicable to small-scale farms. The machine has an initial investment of Php 35, 093.75. Then the machine has a payback period 0.7828 years. The break-even point was calculated to be 144 hrs. per year. The benefit cost ratio of the machine was 1.42. The results revealed that the machine is profitable to use in small-scale farms because it consumes time, less labor cost with a high yield production.
Submitted to the University Library 05/16/2003 T-2568