Investigation of the Kinetic Dynamics in the Intermittent Microwave–Hot-Air Combined Drying of Peanut Pods
The drying process is crucial for maintaining the quality of peanut pods and mitigating the risk of mold proliferation. The aim of this study was to investigate the kinetic characteristics of a synergistic intermittent microwave and a hot-air-drying technique, with an emphasis on enhancing efficienc...
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-12-01
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| Series: | Agriculture |
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| Online Access: | https://www.mdpi.com/2077-0472/14/12/2259 |
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| author | Jiyou An Jianchun Yan Hai Wei Xuan Liao Tao Liu Huanxiong Xie |
| author_facet | Jiyou An Jianchun Yan Hai Wei Xuan Liao Tao Liu Huanxiong Xie |
| author_sort | Jiyou An |
| collection | DOAJ |
| description | The drying process is crucial for maintaining the quality of peanut pods and mitigating the risk of mold proliferation. The aim of this study was to investigate the kinetic characteristics of a synergistic intermittent microwave and a hot-air-drying technique, with an emphasis on enhancing efficiency and reducing energy consumption. A comprehensive analysis was performed on key parameters—including moisture content, moisture ratio, drying rate, and effective moisture diffusion coefficient—to elucidate moisture migration during the drying process. The findings indicated that higher microwave power significantly accelerates the drying rate while substantially shortening the drying time for peanut pods. The effective moisture diffusion coefficient was found to range from 0.987 × 10<sup>−9</sup> to 1.227 × 10<sup>−9</sup> m<sup>2</sup>/s, with the Verma model demonstrating superior accuracy in predicting drying behavior. The experiment achieved a minimum specific energy consumption of 12,535 kJ/kg and a maximum thermal efficiency of 18.1% at a microwave power density of 0.8 W/g combined with a temperature of 40 °C. However, the observed thermal efficiency was lower than that in previous studies, mainly due to the suboptimal regulation of experimental parameters. Future research should focus on optimizing these parameters and further exploring the impact of this drying method on energy consumption to achieve more efficient and sustainable peanut drying. |
| format | Article |
| id | doaj-art-53772aece6a64ce7a16ce25a1c354893 |
| institution | Kabale University |
| issn | 2077-0472 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agriculture |
| spelling | doaj-art-53772aece6a64ce7a16ce25a1c3548932024-12-27T14:03:11ZengMDPI AGAgriculture2077-04722024-12-011412225910.3390/agriculture14122259Investigation of the Kinetic Dynamics in the Intermittent Microwave–Hot-Air Combined Drying of Peanut PodsJiyou An0Jianchun Yan1Hai Wei2Xuan Liao3Tao Liu4Huanxiong Xie5Nanjing Institute of Agricultural Mechanization, Ministry of Agriculture and Rural Affairs, Nanjing 210014, ChinaNanjing Institute of Agricultural Mechanization, Ministry of Agriculture and Rural Affairs, Nanjing 210014, ChinaNanjing Institute of Agricultural Mechanization, Ministry of Agriculture and Rural Affairs, Nanjing 210014, ChinaNanjing Institute of Agricultural Mechanization, Ministry of Agriculture and Rural Affairs, Nanjing 210014, ChinaNanjing Institute of Agricultural Mechanization, Ministry of Agriculture and Rural Affairs, Nanjing 210014, ChinaGraduate School of Chinese Academy of Agricultural Sciences, Beijing 100083, ChinaThe drying process is crucial for maintaining the quality of peanut pods and mitigating the risk of mold proliferation. The aim of this study was to investigate the kinetic characteristics of a synergistic intermittent microwave and a hot-air-drying technique, with an emphasis on enhancing efficiency and reducing energy consumption. A comprehensive analysis was performed on key parameters—including moisture content, moisture ratio, drying rate, and effective moisture diffusion coefficient—to elucidate moisture migration during the drying process. The findings indicated that higher microwave power significantly accelerates the drying rate while substantially shortening the drying time for peanut pods. The effective moisture diffusion coefficient was found to range from 0.987 × 10<sup>−9</sup> to 1.227 × 10<sup>−9</sup> m<sup>2</sup>/s, with the Verma model demonstrating superior accuracy in predicting drying behavior. The experiment achieved a minimum specific energy consumption of 12,535 kJ/kg and a maximum thermal efficiency of 18.1% at a microwave power density of 0.8 W/g combined with a temperature of 40 °C. However, the observed thermal efficiency was lower than that in previous studies, mainly due to the suboptimal regulation of experimental parameters. Future research should focus on optimizing these parameters and further exploring the impact of this drying method on energy consumption to achieve more efficient and sustainable peanut drying.https://www.mdpi.com/2077-0472/14/12/2259drying kineticsenergy consumptionintermittent microwave–hot-air dryingmoisture diffusion coefficientpeanut pods |
| spellingShingle | Jiyou An Jianchun Yan Hai Wei Xuan Liao Tao Liu Huanxiong Xie Investigation of the Kinetic Dynamics in the Intermittent Microwave–Hot-Air Combined Drying of Peanut Pods Agriculture drying kinetics energy consumption intermittent microwave–hot-air drying moisture diffusion coefficient peanut pods |
| title | Investigation of the Kinetic Dynamics in the Intermittent Microwave–Hot-Air Combined Drying of Peanut Pods |
| title_full | Investigation of the Kinetic Dynamics in the Intermittent Microwave–Hot-Air Combined Drying of Peanut Pods |
| title_fullStr | Investigation of the Kinetic Dynamics in the Intermittent Microwave–Hot-Air Combined Drying of Peanut Pods |
| title_full_unstemmed | Investigation of the Kinetic Dynamics in the Intermittent Microwave–Hot-Air Combined Drying of Peanut Pods |
| title_short | Investigation of the Kinetic Dynamics in the Intermittent Microwave–Hot-Air Combined Drying of Peanut Pods |
| title_sort | investigation of the kinetic dynamics in the intermittent microwave hot air combined drying of peanut pods |
| topic | drying kinetics energy consumption intermittent microwave–hot-air drying moisture diffusion coefficient peanut pods |
| url | https://www.mdpi.com/2077-0472/14/12/2259 |
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