ЧИСЕЛЬНЕ МОДЕЛЮВАННЯ ПРОЦЕСУ ТЕПЛОМАСОПЕРЕНОСУ ПІД ЧАС СУШІННЯ КОМПОЗИТНИХ ГРАНУЛ
An urgent task at the current level of society's development is to preserve natural resources and the environment from pollution caused by human activity. It is necessary to preserve and increase the capacity of water and land recycling and reuse systems, develop waste-free and resource-saving...
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| Datum: | 2024 |
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| Sprache: | Ukrainian |
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Institute of Engineering Thermophysics of NAS of Ukraine
2024
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| Online Zugang: | https://ihe.nas.gov.ua/index.php/journal/article/view/591 |
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| Назва журналу: | Thermophysics and Thermal Power Engineering |
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oai:ojs2.ihenasgovua.s43.yourdomain.com.ua:article-5912025-02-22T18:04:19Z NUMERICAL MODELING OF THE HEAT AND MASS TRANSFER PROCESS DURING DRYING OF COMPOSITE PELLETS ЧИСЕЛЬНЕ МОДЕЛЮВАННЯ ПРОЦЕСУ ТЕПЛОМАСОПЕРЕНОСУ ПІД ЧАС СУШІННЯ КОМПОЗИТНИХ ГРАНУЛ Petrova, Zh.O. Davydenko, B.V. Novikova, Yu.P. An urgent task at the current level of society's development is to preserve natural resources and the environment from pollution caused by human activity. It is necessary to preserve and increase the capacity of water and land recycling and reuse systems, develop waste-free and resource-saving technologies. The accumulated sludge deposits from wastewater treatment plants in large cities are outdated, having lost most of their nutrients, become too mineralized and practically unsuitable for direct use as fertilizers. The research is devoted to the development of a unified approach to the efficient processing of sludge sediments as fuel with the addition of flammable fillers such as milled peat and biomass. The aim of the study was to conduct research on drying composite raw materials based on obsolete sludge deposits and theoretical analysis of the heat and mass transfer process. The kinetics of the drying process of composite raw materials on an experimental convective drying bench with automatic data acquisition was studied. The studies show that at a coolant temperature of 80 °C, the drying time increases by about 1.4 times compared to 120 °C. The numerical simulation of convective drying of composite pellets showed that this model generally satisfactorily describes the nature of the change in the temperature in the center of the pellet and its moisture content over time during convective drying. In general, it can be noted that the considered model can be used for an approximate preliminary assessment of the drying time of a pellet made on a screw mechanical device in the proportion of 50% silt and 50% peat. У статті експериментальні дослідження кінетики сушіння композитних гранул на основі застарілих мулових відкладень та торфу. Які показали, що при збільшені температури теплоносія тривалість сушіння зменшується у 1,4 рази. Проведено чисельне моделювання тепломасопереносу в процесі сушіння гранул. Виконане чисельне моделювання конвективного сушіння композитних гранул підтвердило, що дана модель у цілому задовільно описує характер зміни у часі температури в центрі гранули і її вологості в процесі конвекційного сушіння. У цілому ж можна відзначити, що розглянута модель може застосовуватися для наближеної попередньої оцінки часу сушіння гранули, що виготовлена на шнековому механічному пристрої у пропорції 50% мулу та 50% торфу. Institute of Engineering Thermophysics of NAS of Ukraine 2024-09-27 Article Article application/pdf https://ihe.nas.gov.ua/index.php/journal/article/view/591 10.31472/ttpe.3.2024.3 Thermophysics and Thermal Power Engineering; Vol 46 No 3 (2024): Thermophysics and Thermal Power Engineering; 23-32 Теплофизика и Теплоэнергетика; Vol 46 No 3 (2024): Thermophysics and Thermal Power Engineering; 23-32 Теплофізика та Теплоенергетика; Vol 46 No 3 (2024): Thermophysics and Thermal Power Engineering; 23-32 2663-7235 uk https://ihe.nas.gov.ua/index.php/journal/article/view/591/513 https://creativecommons.org/licenses/by/4.0/deed.ru |
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Thermophysics and Thermal Power Engineering |
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| datestamp_date |
2025-02-22T18:04:19Z |
| collection |
OJS |
| language |
Ukrainian |
| format |
Article |
| author |
Petrova, Zh.O. Davydenko, B.V. Novikova, Yu.P. |
| spellingShingle |
Petrova, Zh.O. Davydenko, B.V. Novikova, Yu.P. ЧИСЕЛЬНЕ МОДЕЛЮВАННЯ ПРОЦЕСУ ТЕПЛОМАСОПЕРЕНОСУ ПІД ЧАС СУШІННЯ КОМПОЗИТНИХ ГРАНУЛ |
| author_facet |
Petrova, Zh.O. Davydenko, B.V. Novikova, Yu.P. |
| author_sort |
Petrova, Zh.O. |
| title |
ЧИСЕЛЬНЕ МОДЕЛЮВАННЯ ПРОЦЕСУ ТЕПЛОМАСОПЕРЕНОСУ ПІД ЧАС СУШІННЯ КОМПОЗИТНИХ ГРАНУЛ |
| title_short |
ЧИСЕЛЬНЕ МОДЕЛЮВАННЯ ПРОЦЕСУ ТЕПЛОМАСОПЕРЕНОСУ ПІД ЧАС СУШІННЯ КОМПОЗИТНИХ ГРАНУЛ |
| title_full |
ЧИСЕЛЬНЕ МОДЕЛЮВАННЯ ПРОЦЕСУ ТЕПЛОМАСОПЕРЕНОСУ ПІД ЧАС СУШІННЯ КОМПОЗИТНИХ ГРАНУЛ |
| title_fullStr |
ЧИСЕЛЬНЕ МОДЕЛЮВАННЯ ПРОЦЕСУ ТЕПЛОМАСОПЕРЕНОСУ ПІД ЧАС СУШІННЯ КОМПОЗИТНИХ ГРАНУЛ |
| title_full_unstemmed |
ЧИСЕЛЬНЕ МОДЕЛЮВАННЯ ПРОЦЕСУ ТЕПЛОМАСОПЕРЕНОСУ ПІД ЧАС СУШІННЯ КОМПОЗИТНИХ ГРАНУЛ |
| title_sort |
чисельне моделювання процесу тепломасопереносу під час сушіння композитних гранул |
| title_alt |
NUMERICAL MODELING OF THE HEAT AND MASS TRANSFER PROCESS DURING DRYING OF COMPOSITE PELLETS |
| description |
An urgent task at the current level of society's development is to preserve natural resources and the environment from pollution caused by human activity. It is necessary to preserve and increase the capacity of water and land recycling and reuse systems, develop waste-free and resource-saving technologies.
The accumulated sludge deposits from wastewater treatment plants in large cities are outdated, having lost most of their nutrients, become too mineralized and practically unsuitable for direct use as fertilizers.
The research is devoted to the development of a unified approach to the efficient processing of sludge sediments as fuel with the addition of flammable fillers such as milled peat and biomass.
The aim of the study was to conduct research on drying composite raw materials based on obsolete sludge deposits and theoretical analysis of the heat and mass transfer process.
The kinetics of the drying process of composite raw materials on an experimental convective drying bench with automatic data acquisition was studied. The studies show that at a coolant temperature of 80 °C, the drying time increases by about 1.4 times compared to 120 °C.
The numerical simulation of convective drying of composite pellets showed that this model generally satisfactorily describes the nature of the change in the temperature in the center of the pellet and its moisture content over time during convective drying. In general, it can be noted that the considered model can be used for an approximate preliminary assessment of the drying time of a pellet made on a screw mechanical device in the proportion of 50% silt and 50% peat. |
| publisher |
Institute of Engineering Thermophysics of NAS of Ukraine |
| publishDate |
2024 |
| url |
https://ihe.nas.gov.ua/index.php/journal/article/view/591 |
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