Experimental Evaluation of a Diesel Cogeneration System for Producing Power and Drying Aromatic Herbs
Abstract
:1. Introduction
2. Materials and Methods
2.1. Experimental Setup
2.1.1. Cogeneration System
2.1.2. Thermosyphon Heat Exchanger Design
2.1.3. Aromatic Herbs Used for Drying
2.2. Experimental Procedure
3. Results and Discussion
3.1. Cogeneration Performance and Heat Exchanger Performance
3.2. Drying Analyses
4. Conclusions
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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Equipment | Characteristics | Specifications |
---|---|---|
Generator set | Compression ignition engine | YANMAR 3TNE84, DI, four stroke, three cylinders, naturally aspirated, water cooled, Diesel fuel Rated power: 14.8 KW |
Generator | MECC ALTE—ECO28 3L/2 31 kVA (24.8 kW) 1800 RPM | |
Drying system | Heat exchanger | Counter-flow air-exhaust gases, with fifty copper thermosyphons filled with water. Dimensions W × D × H: 0.26 × 0.76 × 0.54 m |
Air blower | Centrifugal fan, 0.36 kW, 2100 RPM | |
Dryer | Convective three trays, Drying Chamber dimensions W * D * H: 0.51 * 0.51 * 1.05 m |
AH | Initial Moisture (%) | Tray Load 1 (Kg) | Tray Load 2 (Kg) | Tray Load 3 (Kg) |
---|---|---|---|---|
Origanum vulgare | 84 | 0.27 | 0.27 | 0.27 |
Mentha spicata | 78 | 0.42 | 0.42 | 0.42 |
Ocimum basilicum | 87.3 | 0.22 | 0.22 | 0.22 |
Variable | Associated Uncertainty |
---|---|
Thermocouples | ±0.3 °C |
Coriolis mass flow rate | ±8.7 × 10−5 kg/s |
Pitot tube meter | ±12.7 × 10−4 m3/s |
Generator efficiency | 88% at full load |
Efficiency | ±0.9% |
Recovered heat | ±0.6% |
Effectiveness | ±0.8% |
Measuring Point | Drying Air Velocity (m/s) | Measuring Point | Drying Air Velocity (m/s) | Measuring Point | Drying Air Velocity (m/s) |
---|---|---|---|---|---|
1 | 0.35 | 4 | 0.15 | 7 | 0.1 |
2 | 0.45 | 5 | 0.25 | 8 | 0.2 |
3 | 0.3 | 6 | 0.15 | 9 | 0.1 |
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Olmos-Villalba, L.; Herrera, B.; Gallego, A.; Cacua, K. Experimental Evaluation of a Diesel Cogeneration System for Producing Power and Drying Aromatic Herbs. Sustainability 2019, 11, 5121. https://doi.org/10.3390/su11185121
Olmos-Villalba L, Herrera B, Gallego A, Cacua K. Experimental Evaluation of a Diesel Cogeneration System for Producing Power and Drying Aromatic Herbs. Sustainability. 2019; 11(18):5121. https://doi.org/10.3390/su11185121
Chicago/Turabian StyleOlmos-Villalba, Luis, Bernardo Herrera, Anderson Gallego, and Karen Cacua. 2019. "Experimental Evaluation of a Diesel Cogeneration System for Producing Power and Drying Aromatic Herbs" Sustainability 11, no. 18: 5121. https://doi.org/10.3390/su11185121