Energy and exergy analyses of paddy drying process in a vertical fluidised bed dryer

Pattanayak, Binayak; Mohapatra, Siba Shankar; Das, Harish Chandra

doi:10.1504/ijex.2019.097975

Cited by 15 publications

(4 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Exergy efficiency gradually increased with the increase in the drying AT of the drying process. This is the same as the research results of Pattanayak and Mohapatra [ 25 ], which showed that an increase in drying temperature in turn increases exergetic efficiency, as well as the research results of Zohrabi et al [ 19 ], which showed that increasing the drying temperature improved the overall functional exergetic efficiency of drying system; in particular, it increased more obviously when the drying temperature exceeded 50 °C. Therefore, according to the principle of not affecting drying quality, a higher drying medium temperature saves more energy.…”

Section: Resultssupporting

confidence: 87%

“…As low-temperature drying is conducive to maintaining the quality of rice [ 25 , 28 ], six temperature levels, namely 30, 35, 40, 45, 50, and 55 °C, were selected to analyze the exergy characteristics of the drying chamber during the rice-drying test. For the variable air temperature experiment, the air velocity across the grain layer was 0.5 m/s; for the variable air velocity experiment, the temperature was 40 °C.…”

Section: Methodsmentioning

confidence: 99%

“…[ 24 ] studied the effect of wall temperature, air velocity and bed height on the exergy efficiency of Kodo millet grain and fenugreek seed drying in a wall-heated fluidized bed dryer. Pattanayak et al [ 25 ] studied the effect of drying air temperature and paddy mass in a batch on exergy performance in a vertical fluidized bed dryer. Sarker et al [ 26 ] studied the effect of drying temperature and initial moisture on the energy and exergy performance of paddy drying in an industrial fluidized bed.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Energy and Exergy Analyses of Rice Drying in a Novel Electric Stationary Bed Grain-Drying System with Internal Circulation of the Drying Medium

Wang

et al. 2021

Foods

View full text Add to dashboard Cite

In our study, we developed a system to reduce both energy consumption and pollutant discharge during the drying process. We present a new technology, a stationary bed grain-drying test device based on the internal circulation of the drying medium (ICODM). A rice-drying experiment was carried out inside of it, and the influences of air temperature (AT) and air velocity (AV) on the energy and exergy efficiencies (EEE) as well as the improvement potential rate (IPR) and the sustainability index (SI) of the rice-drying process were studied. The following conclusions were obtained: when the rice was dried at a temperature of below 55 °C and an AV across the grain layer of 0.5 m/s, the average EEE during the drying process was 48.27–72.17% and 40.27–71.07%, respectively, demonstrating an increasing trend as the drying medium temperature increased. When the rice was dried using an AV across the grain layer in the range of 0.33–0.5 m/s and a temperature of 40 °C, the two values were 39.79–73.9% and 49.66–71.04%, respectively, demonstrating a decreasing trend as the drying medium flow velocity increased. IPR and SI were 4.1–8.5 J/s and 1.9–2.7, respectively, at a drying temperature of 30–55 °C and an AV of 0.33–0.5 m/s. These conclusions can provide helpful guidance for the optimization and control of the rice-drying process in terms of saving energy.

show abstract

Section: Resultssupporting

confidence: 87%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Energy and Exergy Analyses of Rice Drying in a Novel Electric Stationary Bed Grain-Drying System with Internal Circulation of the Drying Medium

Wang

et al. 2021

Foods

View full text Add to dashboard Cite

show abstract

“…In this regard, the increase in energy utilization may be because the enthalpy supplied increased with the increasing drying air temperature and bed thickness, which in turn led to an increase in the energy utilization, since the EU is directly related to enthalpy [33]. Moreover, these results agreed well with Das et al [52] and Pattanayak et al [53].…”

Section: Energy Utilizationsupporting

confidence: 85%

Modeling and Optimization of Energy and Exergy Parameters of a Hybrid-Solar Dryer for Basil Leaf Drying Using RSM

et al. 2022

View full text Add to dashboard Cite

This study deals with the optimization of energetic and exergetic parameters of a hybrid-solar dryer to dry basil leaves under determined experimental conditions at three air temperatures (40 °C, 55 °C, and 70 °C) and three bed thickness levels (2, 4, and 6 cm). The optimization of the thermodynamic parameters was performed using the response surface method (RSM) based on the central composite design (CCD) and the desirability function (DF) to maximize the drying rate, exergy efficiency, improvement potential rate and the sustainability index, and to minimize the energy utilization, energy utilization ratio and exergy loss rate. These parameters were calculated on the basis of the first and second laws of thermodynamics as the response variables. Based on the results obtained, it was determined that the optimal conditions for basil drying were at a drying air temperature of 63.8 °C and a bed thickness of 2 cm. At this point, the parameters of the drying rate, energy utilization, energy utilization ratio, exergy efficiency, exergy loss rate, improvement potential rate and sustainability index were obtained with the maximum utility function (D = 0.548) as 0.27, 0.019 (kJ/s), 0.23, 65.75%, 0.016 (kJ/s), 1.10 (kJ/s) and 0.015, respectively.

show abstract

Hydrodynamic Aspects of Drying Brewer's Grains in a Suspended Bed

Sergey

Andrey

Aleksey

et al. 2021

XIV International Scientific Conference “INTERAGROMASH 2021"

View full text Add to dashboard Cite

Energy and exergy analyses of paddy drying process in a vertical fluidised bed dryer

Cited by 15 publications

References 0 publications

Energy and Exergy Analyses of Rice Drying in a Novel Electric Stationary Bed Grain-Drying System with Internal Circulation of the Drying Medium

Energy and Exergy Analyses of Rice Drying in a Novel Electric Stationary Bed Grain-Drying System with Internal Circulation of the Drying Medium

Modeling and Optimization of Energy and Exergy Parameters of a Hybrid-Solar Dryer for Basil Leaf Drying Using RSM

Hydrodynamic Aspects of Drying Brewer's Grains in a Suspended Bed

Contact Info

Product

Resources

About