Energy and exergy analysis of industrial fluidized bed drying of paddy

Sarker, Md. Sazzat Hossain; Ibrahim, Mohd Nordin; Aziz, Nuraini Abdul; Punan, Mohd Salleh

doi:10.1016/j.energy.2015.02.064

Cited by 99 publications

(43 citation statements)

References 20 publications

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“…It can be seen by increasing temperature, the broken grains and yellow grains increased due to the skin of paddy will be burnt. These results are consistent with [2][3]. Furthermore, the use of immersed heater causes the damaged grain and yellowed grain more higher due to contact between the surfaces of grain with the coil of immersed heater.…”

Section: Methodssupporting

confidence: 82%

“…Mainly Fluid Bed Dryer (FBD) was chosen, in which other dryer methods are Spouted Bed Dryer (SBD), Pneumatic Dryer, Tray Dryer, Inclined Bed Dryer, Impinging Stream Dryer, and Heat Pump Dryer. Paddy drying consumes huge energy and is sensitive to product quality [2][3]. Mainly, drying paddy is performed by a fluidized bed dryer for due to (1) uniform product quality due to complete mixing, (2) high drying capacity due to high ratio of air mass to mass of product [4][5].…”

Section: The First Section In Your Papermentioning

confidence: 99%

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Performance Study of Fluidized Bed Dryer with Immersed Heater for Paddy Drying

Suherman

Azaria

Karami

2018

IOP Conf. Ser.: Mater. Sci. Eng.

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Section: Methodssupporting

confidence: 82%

Section: The First Section In Your Papermentioning

confidence: 99%

Performance Study of Fluidized Bed Dryer with Immersed Heater for Paddy Drying

Suherman

Azaria

Karami

2018

IOP Conf. Ser.: Mater. Sci. Eng.

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“…The amount of exergy transmitted due to evaporation in the drying chamber was calculated using Equation 14 (Sarker et al 2015)…”

Section: Exergy Analysismentioning

confidence: 99%

Classification of the Energy and Exergy of Microwave Dryers in Drying Kiwi Using Artificial Neural Networks

2019

CRPJFST

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This investigation uses the artificial neural network model to classify the energy and exergy of the kiwi drying process in a microwave dryer. In this experiment, classification was carried out separately for various pretreatments and microwave powers using three pretreatments (oven, ohmic, and control treatments) and microwave power values (360, 600, and 900W), and the artificial neural network model. Classification was done using 5 different input data groups. The first group included the overall data (energy efficiency, special energy loss, exergy efficiency, and exergy loss), while the second to fifth groups included the data on the exergy efficiency, special energy loss, energy efficiency and special exergy loss in the order mentioned, which served as the classification inputs. Considering the results, the best R and Percent Correct values for the oven (Percent Correct=90 – R=0.709) and ohmic (Percent Correct=83.33– R=0.846) pretreatments were obtained. The values of this parameters were also calculated for the control (Percent Correct=71.43 – R=0.843), the 360W power (Percent Correct=92.86 – R=0.9975), the 600W power (Percent Correct=100 – R=0.9124), and the 900W power (Percent Correct=100 – R=0.9685). The overall data was used in the classification phase. In addition, the maximum correctly detected data for the oven, ohmic, and pretreatment was 18 (20 items), 15 (18 items), and 5 (7 items), respectively. The maximum correctly detected data for the 360W power, 600W power, and 900W power levels was 13 (14 items), 15 (15 items), and 16 (16 items), respectively. In sum, the neural network using the overall data input displayed acceptable efficiency in classifying the energy and exergy data of the kiwi drying process in microwave dryers

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“…Nazghelichi et al (2010) have analyzed the exegetic and energetic performance of fluidized bed dryer using carrot cubes and reported energy utilization ratio in the range of 0.074-0.486, exergy efficiency in the range of 0.103-0.707 for drying (Nazghelichi, Kianmehr, & Aghbashlo, 2010). Sarker, Ibrahim, Abdul Aziz, and Punan (2015) have performed experiments to determine the energy and exergy performance of the industrial fluidized bed drying with paddy and noticed that the change is 46.99 to 58.14% of drying exergy efficiency (Sarker et al, 2015). Yogendrasasidhar and Pydi Setty (2018) have performed experimentation to determine exergy and energy analyses of fluidized bed dryer with wall heating using Kodo millet grains and Fenugreek seeds, reported the energy utilization ratio in the range of 0.6-0.9, exergy efficiency in the range of 0.65-0.94 for both materials (Yogendrasasidhar & Pydi Setty, 2018).…”

Section: Introductionmentioning

confidence: 99%

Energetic and exergetic analyses of Barnyard millet drying using continuous multistage fluidized bed dryer

Devani

Yelamarthi

2019

J Food Process Engineering

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Most of the exergy studies reported were in batch fluidized bed drying process. The continuous dryer plays a pivotal role in industrial usage. In this study, exergy and energy analyses of multistage fluidized bed drying of Barnyard millet with stages connected externally were examined. The dryer was operated by changing wall temperature of stages (313–328 K), air inlet velocity (1.01–1.3 m/s), downcomer height (50–70 mm), and flow rate of solids (5–10 kg/h). Drying characteristics of Barnyard millet by changing process operating conditions of the dryer, were reported and the energy utilization ratio, exergy loss and exergy efficiency of dryer were also reported. The EUR of dryer at steady state has been found to be in the range of 0.25–0.46 and the maximum exergy efficiency of dryer was observed as 0.64 and lowest as 0.371 in the continuous drying process. Practical Applications Fluidized beds offer many distinct features and advantages for processing of particulate food materials. To decrease the drying time than that for single stage dryers, continuous multistage fluidized bed dryer was introduced. Reducing moisture content from feed materials in continuous dryers while discharging continuously, helps to process large quantity of solid materials with good quality of product. Several dryers with different modifications and designs have been suggested by many earlier investigators but continuous dryers play significant role in particulate industry. The multistage dryer is designed by connecting two or more fluidized beds internally or externally, where each bed is termed as a stage. Advantages of the multistage dryer are improvement in gas–solid axial mixing, which results in good quality of product. Due to stage‐wise contact of solids with gas, dried product with uniform moisture content can be obtained.

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Energy and exergy analysis of industrial fluidized bed drying of paddy

Cited by 99 publications

References 20 publications

Performance Study of Fluidized Bed Dryer with Immersed Heater for Paddy Drying

Performance Study of Fluidized Bed Dryer with Immersed Heater for Paddy Drying

Classification of the Energy and Exergy of Microwave Dryers in Drying Kiwi Using Artificial Neural Networks

Energetic and exergetic analyses of Barnyard millet drying using continuous multistage fluidized bed dryer

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