EFFECT OF CONSTANT VOLUME STRUCTURE PARAMETERS ON GRAIN VENTILATION DRYING
ABSTRACT The structural parameters of a grain dryer are directly related to the its energy consumption and quality formation. Therefore, based on the Ergun model, air state parameters and uniformity evaluation method, the effect of changes in the ventilation area on grain airflow resistance, drying...
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Engenharia Agrícola
2023-09-01
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| Series: | Engenharia Agrícola |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162023000300306&lng=en&tlng=en |
| _version_ | 1797692681900523520 |
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| author | Xingzao Ma Danna Zheng Zhuangdong Fang |
| author_facet | Xingzao Ma Danna Zheng Zhuangdong Fang |
| author_sort | Xingzao Ma |
| collection | DOAJ |
| description | ABSTRACT The structural parameters of a grain dryer are directly related to the its energy consumption and quality formation. Therefore, based on the Ergun model, air state parameters and uniformity evaluation method, the effect of changes in the ventilation area on grain airflow resistance, drying energy consumption, drying efficiency and uniformity are theoretically and experimentally studied in this work under the same initial grain weight and air flux. The results show that under the conditions of air temperatures 35℃ and 70℃, the weight of paddy 8.547 kg and the air flux 12.3 m3·h-1, hot air introduced into the drying chamber with cross-sectional areas of S1 and S2 respectively, the ventilation area enlarged by 2.328 times, the grain airflow resistance decreased by 7.17 and 6.99 times. Enlarging the ventilation area effectively improved the drying rate of paddy, especially at 70℃, while the unit energy consumption was the opposite. It also accelerated the moving speed of the saturated humidity line in the drying layer and improved the drying uniformity of the paddy. These experimental results are in agreement with the theoretical analysis, which provides a reference for the design of grain drying equipment and technology. |
| first_indexed | 2024-03-12T02:32:07Z |
| format | Article |
| id | doaj.art-a3563891792d469084b9d62cdb2252e4 |
| institution | Directory Open Access Journal |
| issn | 0100-6916 |
| language | English |
| last_indexed | 2024-03-12T02:32:07Z |
| publishDate | 2023-09-01 |
| publisher | Sociedade Brasileira de Engenharia Agrícola |
| record_format | Article |
| series | Engenharia Agrícola |
| spelling | doaj.art-a3563891792d469084b9d62cdb2252e42023-09-05T07:43:33ZengSociedade Brasileira de Engenharia AgrícolaEngenharia Agrícola0100-69162023-09-0143310.1590/1809-4430-eng.agric.v43n3e20200037/2023EFFECT OF CONSTANT VOLUME STRUCTURE PARAMETERS ON GRAIN VENTILATION DRYINGXingzao Mahttps://orcid.org/0000-0001-7299-6677Danna ZhengZhuangdong FangABSTRACT The structural parameters of a grain dryer are directly related to the its energy consumption and quality formation. Therefore, based on the Ergun model, air state parameters and uniformity evaluation method, the effect of changes in the ventilation area on grain airflow resistance, drying energy consumption, drying efficiency and uniformity are theoretically and experimentally studied in this work under the same initial grain weight and air flux. The results show that under the conditions of air temperatures 35℃ and 70℃, the weight of paddy 8.547 kg and the air flux 12.3 m3·h-1, hot air introduced into the drying chamber with cross-sectional areas of S1 and S2 respectively, the ventilation area enlarged by 2.328 times, the grain airflow resistance decreased by 7.17 and 6.99 times. Enlarging the ventilation area effectively improved the drying rate of paddy, especially at 70℃, while the unit energy consumption was the opposite. It also accelerated the moving speed of the saturated humidity line in the drying layer and improved the drying uniformity of the paddy. These experimental results are in agreement with the theoretical analysis, which provides a reference for the design of grain drying equipment and technology.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162023000300306&lng=en&tlng=enventilation areatheoretical analysisdrying energy consumptiondrying uniformity |
| spellingShingle | Xingzao Ma Danna Zheng Zhuangdong Fang EFFECT OF CONSTANT VOLUME STRUCTURE PARAMETERS ON GRAIN VENTILATION DRYING Engenharia Agrícola ventilation area theoretical analysis drying energy consumption drying uniformity |
| title | EFFECT OF CONSTANT VOLUME STRUCTURE PARAMETERS ON GRAIN VENTILATION DRYING |
| title_full | EFFECT OF CONSTANT VOLUME STRUCTURE PARAMETERS ON GRAIN VENTILATION DRYING |
| title_fullStr | EFFECT OF CONSTANT VOLUME STRUCTURE PARAMETERS ON GRAIN VENTILATION DRYING |
| title_full_unstemmed | EFFECT OF CONSTANT VOLUME STRUCTURE PARAMETERS ON GRAIN VENTILATION DRYING |
| title_short | EFFECT OF CONSTANT VOLUME STRUCTURE PARAMETERS ON GRAIN VENTILATION DRYING |
| title_sort | effect of constant volume structure parameters on grain ventilation drying |
| topic | ventilation area theoretical analysis drying energy consumption drying uniformity |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162023000300306&lng=en&tlng=en |
| work_keys_str_mv | AT xingzaoma effectofconstantvolumestructureparametersongrainventilationdrying AT dannazheng effectofconstantvolumestructureparametersongrainventilationdrying AT zhuangdongfang effectofconstantvolumestructureparametersongrainventilationdrying |