Energy and exergy analyses of okra drying process in a forced convection cabinet dryer
A forced convection automatic cabinet dryer integrated with a data logger was designed and fabricated. The okra samples were dried in the dryer at drying temperatures of 50, 60, and 70 °C and at three different load densities of 200, 300, and 400 g at a continuous air velocity of 0.7 m.s-1. Energy a...
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| Format: | Article |
| Language: | English |
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Czech Academy of Agricultural Sciences
2021-03-01
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| Series: | Research in Agricultural Engineering |
| Subjects: | |
| Online Access: | https://rae.agriculturejournals.cz/artkey/rae-202101-0002_energy-and-exergy-analyses-of-okra-drying-process-in-a-forced-convection-cabinet-dryer.php |
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| author | Abiodun Okunola Timothy Adekanye Endurance Idahosa |
| author_facet | Abiodun Okunola Timothy Adekanye Endurance Idahosa |
| author_sort | Abiodun Okunola |
| collection | DOAJ |
| description | A forced convection automatic cabinet dryer integrated with a data logger was designed and fabricated. The okra samples were dried in the dryer at drying temperatures of 50, 60, and 70 °C and at three different load densities of 200, 300, and 400 g at a continuous air velocity of 0.7 m.s-1. Energy and exergy analyses of the drying process were performed. The obtained results showed that the energy efficiency, energy utilisation, and utilisation ratio increased from 26.59 to 68.24%, 5.47 to 114.36 W, and 0.36 to 0.71 as the temperature increased to 70 °C, respectively. The inflow, outflow, and exergy losses were in the range of 7.02 to 26.14 W, 4.43 to 14.16 W, and 2.59 to 11.98 W, respectively, while exergy efficiency varied from 49.15 to 63.47%. The findings show that exergy efficiencies decrease with an increase in the drying temperature, but increase with a lower load rate. The index of sustainability varies from 2.14 to 2.77, the value increases as the load density decreases while it decreases with a temperature increment. |
| first_indexed | 2024-04-10T08:05:23Z |
| format | Article |
| id | doaj.art-90cab4f6893945a5a0aa00ed06aee507 |
| institution | Directory Open Access Journal |
| issn | 1212-9151 1805-9376 |
| language | English |
| last_indexed | 2024-04-10T08:05:23Z |
| publishDate | 2021-03-01 |
| publisher | Czech Academy of Agricultural Sciences |
| record_format | Article |
| series | Research in Agricultural Engineering |
| spelling | doaj.art-90cab4f6893945a5a0aa00ed06aee5072023-02-23T03:47:58ZengCzech Academy of Agricultural SciencesResearch in Agricultural Engineering1212-91511805-93762021-03-0167181610.17221/48/2020-RAErae-202101-0002Energy and exergy analyses of okra drying process in a forced convection cabinet dryerAbiodun Okunola0Timothy AdekanyeEndurance Idahosa1Department of Agricultural and Biosystems Engineering, College of Engineering, Landmark University, Omu-Aran, NigeriaDepartment of Agricultural and Biosystems Engineering, College of Engineering, Landmark University, Omu-Aran, NigeriaA forced convection automatic cabinet dryer integrated with a data logger was designed and fabricated. The okra samples were dried in the dryer at drying temperatures of 50, 60, and 70 °C and at three different load densities of 200, 300, and 400 g at a continuous air velocity of 0.7 m.s-1. Energy and exergy analyses of the drying process were performed. The obtained results showed that the energy efficiency, energy utilisation, and utilisation ratio increased from 26.59 to 68.24%, 5.47 to 114.36 W, and 0.36 to 0.71 as the temperature increased to 70 °C, respectively. The inflow, outflow, and exergy losses were in the range of 7.02 to 26.14 W, 4.43 to 14.16 W, and 2.59 to 11.98 W, respectively, while exergy efficiency varied from 49.15 to 63.47%. The findings show that exergy efficiencies decrease with an increase in the drying temperature, but increase with a lower load rate. The index of sustainability varies from 2.14 to 2.77, the value increases as the load density decreases while it decreases with a temperature increment.https://rae.agriculturejournals.cz/artkey/rae-202101-0002_energy-and-exergy-analyses-of-okra-drying-process-in-a-forced-convection-cabinet-dryer.phpagriculturefood processingforce dryingtray dryer |
| spellingShingle | Abiodun Okunola Timothy Adekanye Endurance Idahosa Energy and exergy analyses of okra drying process in a forced convection cabinet dryer Research in Agricultural Engineering agriculture food processing force drying tray dryer |
| title | Energy and exergy analyses of okra drying process in a forced convection cabinet dryer |
| title_full | Energy and exergy analyses of okra drying process in a forced convection cabinet dryer |
| title_fullStr | Energy and exergy analyses of okra drying process in a forced convection cabinet dryer |
| title_full_unstemmed | Energy and exergy analyses of okra drying process in a forced convection cabinet dryer |
| title_short | Energy and exergy analyses of okra drying process in a forced convection cabinet dryer |
| title_sort | energy and exergy analyses of okra drying process in a forced convection cabinet dryer |
| topic | agriculture food processing force drying tray dryer |
| url | https://rae.agriculturejournals.cz/artkey/rae-202101-0002_energy-and-exergy-analyses-of-okra-drying-process-in-a-forced-convection-cabinet-dryer.php |
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