Rapid Drying of High-Moisture Paddy Using a Pneumatic Dryer with Corrugated-Surface Drying Column

Nimmol, Chatchai; Yodrux, Aswin; Hirunwat, Anucha

doi:10.1051/e3sconf/202014101006

Cited by 3 publications

(2 citation statements)

References 18 publications

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“…This high level of energy efficiency recorded in this study can be attributed to the fact that the material is suspended in the air, which allows for optimal solid-hot air contact and efficient heat transmission (Pakowski and Mujumdar, 2014), longer length of the drying duct of 22.5 m, which allows optimum energy utilization and efficient heat exchanger. It is vital that the drying duct be long enough to provide the particles adequate time to dry while being transported in flash dryers (Chapuis et al, 2017), as this has an impact on their energy efficiency (Nimmol et al, 2020). This is unlike the conventional locally manufacture flash dryer which the length of the drying duct is typically range between 7 to 15 m length (Tran et al, 2022).…”

Section: The Dryer Performancementioning

confidence: 99%

“…Higher intake temperatures can be employed in flash dryers than in many other dryers without overheating the product because of this unique attribute of the flash dryer. When compared to other dryers, flash dryers can be used to dry some products at temperatures as high as 700 • C. The dryer's energy efficiency (Nimmol et al, 2020) and the dried product's quality (Bonazzi et al, 2009), are both directly impacted by the air temperature. High drying air temperatures typically yield improved energy efficiency (Tran et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

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Development of a pilot scale energy efficient flash dryer for cassava flour

Adegbite¹,

Asiru²,

Sartas³

et al. 2023

Resources, Environment and Sustainability

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Section: The Dryer Performancementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Development of a pilot scale energy efficient flash dryer for cassava flour

Adegbite¹,

Asiru²,

Sartas³

et al. 2023

Resources, Environment and Sustainability

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Comparative Study between Current Practices on Cassava Drying by Small-Size Enterprises in Africa

et al. 2020

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Small-size enterprises drying cassava in Africa mostly use fixed-bed dryers or pneumatic dryers. The objective of this study was to determine which of those two dryers is the best choice for this operation. Energy performance, product quality and costs were measured and analysed using a comparative experiment design. Each dryer was considered as a treatment and experiments were performed in quintuplicate at a cassava processing small-size enterprise in Ghana. The energy performance of the pneumatic dryer was superior because of the better contact between the cassava grits and the drying air, resulting in greater heat and mass transfer. The cassava flour obtained from the fixed-bed dryer had a higher Whiteness Index, but the same level of lightness, and the staff responsible for managing product quality was not able to visually distinguish them. As a result of the pneumatic dryer’s better energy performance, its operating cost was lower. The capital cost of this dryer was higher, but to recover the additional investment only 194 days of operation were needed. Therefore, it was concluded that pneumatic dryers are a better choice of equipment for cassava drying by small-size enterprises in Africa.

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Paddy Drying Technologies: A Review of Existing Literature on Energy Consumption

Ying,

Spang

2024

Processes

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This study explores the existing literature on specific energy consumption (SEC) use for paddy drying and consolidates all relevant data for comparisons across technologies. Energy consumption data for a range of drying technologies are consolidated from published literature and normalized to enable comparison. A large proportion of the source data are generated from operational performance in industrial or laboratory settings, while the remainder is derived from computer simulations. The SEC of paddy drying is driven primarily by technology type; however, operational factors (such as the system size, temperature, and airflow) and external factors (such as the local climate and paddy moisture content) also heavily influence system energy use. The results of our analysis show that the industrial drying technologies explored in this study have an average SEC of 5.57 ± 2.21 MJ/kg, significantly lower than the 20.87 ± 14.97 MJ/kg observed in a laboratory setting, which can potentially be attributed to differences in processing capacity. Multi-stage drying typically has higher energy efficiency when tempering stages are incorporated. The self-circulating design of some drying systems may provide additional opportunities for heat exchange, leading to efficient drying performance without the need for a separate tempering stage. Beyond traditional methods, we have observed a notable shift towards solar-assisted and infrared drying technologies in laboratory settings, reflecting an increasing interest in sustainable and efficient drying solutions. In summary, this review consolidates SEC data for rice drying technologies, analyzes the energy intensity and performance of each drying technology, and identifies data gaps that might be addressed in future research.

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Rapid Drying of High-Moisture Paddy Using a Pneumatic Dryer with Corrugated-Surface Drying Column

Cited by 3 publications

References 18 publications

Development of a pilot scale energy efficient flash dryer for cassava flour

Development of a pilot scale energy efficient flash dryer for cassava flour

Comparative Study between Current Practices on Cassava Drying by Small-Size Enterprises in Africa

Paddy Drying Technologies: A Review of Existing Literature on Energy Consumption

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