Performance of a recirculating dryer equipped with a desiccant wheel

Abasi, Sadjad; Minaei, Saeid; Khoshtaghaza, Mohammad Hadi

doi:10.1080/07373937.2015.1021421

Cited by 16 publications

(9 citation statements)

References 30 publications

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“…The drying rate of corn kernels under various drying conditions was calculated according to Equation (2) (Abasi, Minaei, & Khoshtaghaza, ):

italicDR = \frac{{M_{normalt}}_{1} ‐ {M_{normalt}}_{2}}{t_{2} ‐ t_{1}},

where t 1 and t 2 are the drying rate in hours at different times during drying, respectively; M t 1 and M t 2 are the dry basis moisture contents of corn kernels at time t 1 and t 2 , g g −1 .…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Low temperature plasma pretreatment enhances hot‐air drying kinetics of corn kernels

Chen

Liang

et al. 2019

J Food Process Engineering

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In this study, an efficient method for hot‐air drying of corn kernels was developed through a pretreatment of low temperature plasma. Corn kernels after plasma pretreatment were dried at 37.5, 45, and 52.5°C. It was found that the dried samples with plasma pretreatment presented shorter drying time and higher drying rate. After pretreatment power of 500 W for 30 s at 37.5°C, drying time was shortened by a maximum of 21.52%, and the drying rate was increased by 8.15%. The effective moisture diffusivity is in the range of 1.6107 – 1.9962, 2.8454 – 3.3600, 4.3237 – 4.7171 × 10−11 m2 s−1 at drying temperature of 37.5, 45, and 52.5°C. Plasma pretreatment enhances the drying kinetics more effectively with lower activation energy 47.79 kJ mol−1 in comparison with 54.82 kJ mol−1 for the control group. Atomic force microscopy showed the plasma pretreatment can change the surface topography with some microholes, which explain how the plasma pretreatment can improve the drying process. Practical Application The low temperature plasma pretreatment can improve the efficiency of corn kernels drying. Furthermore, it has potential application for reducing energy consumption in drying. The low temperature plasma pretreatment can be potentially applied in commercial drying.

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“…The drying rate of corn kernels under various drying conditions was calculated according to Equation (2) (Abasi, Minaei, & Khoshtaghaza, ):

italicDR = \frac{{M_{normalt}}_{1} ‐ {M_{normalt}}_{2}}{t_{2} ‐ t_{1}},

Section: Methodsmentioning

confidence: 99%

“…The drying rate of corn kernels under various drying conditions was calculated according to Equation (2) (Abasi, Minaei, & Khoshtaghaza, 2015):…”

Section: Drying Rate Curvesmentioning

confidence: 99%

Low temperature plasma pretreatment enhances hot‐air drying kinetics of corn kernels

Chen

Liang

et al. 2019

J Food Process Engineering

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“…All through the beginning of the conveyor structure operation, the strain on the strap will be more than the stable stage strain. The strap tautness, while the conveyor starts to run, is, Tss = Tst * Ks (16) here Ks is called the start-up factor which is a constant and Tst is the belt tension during the start of the operation.…”

Section: Conveyor Systemsmentioning

confidence: 99%

Review on Conveyor Systems and Thermography

Singh¹,

Rukkumani²,

Manju³

et al. 2020

JESTR

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Dryer systems play a very significant role in most process industries. There are different composers of dryers based on its nature of drying and the item being utilized for drying. Some dryers use direct contact and some involve indirect contact for drying. But most widely used dryers are associated with a conveyor system which utilizes the transportation of materials along with smooth drying. Implementing a proper design of dryer along with a conveyor is very much essential and eliminates or reduces the non-uniformity in the drying of materials to improve the system efficiency. Some dryers work on electricity and some on solar systems. In this paper, we have prepared a literature review of the proposal and performance of various dryer and conveyor systems. Application of thermography for dryer systems will help in predicting the nonlinear nature exhibited in the dryer system thereby enhancing the protection and proper control for even drying of materials.

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“…Similarly, different parameters of desiccant based drying system are optimized for energy minimization, e.g. drying air temperature and drying rate [42] ; desiccant rotor speed for optimum dehumidification and enthalpy recovery [43] ; maximum energy saving [44] ; desiccant rotor speed, temperature and velocity of regeneration air [43] . Consequently, the study is objected towards the performance evaluation of DDS in compared with conventional drying system (CDS).…”

Section: Introduction mentioning

confidence: 99%

Investigation of energy-efficient solid desiccant system for wheat drying

Hanif

Sultan

Miyazaki³

et al. 2019

International Journal of Agricultural and Biological Engineering

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The study investigates the applicability of solid desiccant system for drying of freshly harvested wheat grains in order to reduce the moisture content to an optimum level. Fast and low-temperature drying systems are required by today's drying industries in order to provide economical and safe drying. Therefore, comparison of desiccant drying has been made with the conventional method in terms of drying kinetics, allowable time for safe storage, the total time for drying cycle, and overall energy consumption. It has been found that the air conditions of proposed desiccant drying system provides a high drying rate and longer allowable storage time for safe drying. As the desiccants possess water adsorbing ability by means of vapor pressure deficit, therefore, the desiccant system successfully provides low-temperature drying which ensures the quality of wheat grains. Overall energy consumption is estimated for both conventional hot air drying and desiccant drying system. It has been found that the desiccant system requires less energy as drying is accomplished at minimum level of air flow and within allowable storage time.In addition, the overall performance index of the desiccant system is higher at all temperatures. The study is useful for developing a low-cost and sustainable drying technology for various agricultural products.

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Performance of a recirculating dryer equipped with a desiccant wheel

Cited by 16 publications

References 30 publications

Low temperature plasma pretreatment enhances hot‐air drying kinetics of corn kernels

Low temperature plasma pretreatment enhances hot‐air drying kinetics of corn kernels

Review on Conveyor Systems and Thermography

Investigation of energy-efficient solid desiccant system for wheat drying

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