Reaction engineering approach for modeling single wood particle drying at elevated air temperature

Kharaghani, Abdolreza; Le, Kieu Hiep; Tran, Thi Thu Hang; Tsotsas, Evangelos

doi:10.1016/j.ces.2019.01.042

Cited by 16 publications

(10 citation statements)

References 27 publications

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“…33 3.3 | Simulating the drying process using the parameters obtained using the conventional approach for REA which is based on Equation (17) and that based on Equation (22) The conventional approach for REA has been widely and successfully used to simulate and predict the drying process of fruits and vegetables and other biomaterials. 29,[35][36][37][38][39][40] One of the crucial parts it is the availability of a reliable transfer surface area. For carrot cubes, the reliability and accuracy of the current approach have been confirmed in the latest investigation by our team.…”

Section: A General Description Of the Reaction Engineering Approach M...mentioning

confidence: 99%

Obtaining model parameters of drying kinetics for highly shrinkable materials without knowing the surface area a priori

Liu

Yang

et al. 2022

AIChE Journal

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Shrinkage parameters of highly shrinkable materials such as length, diameter and surface area during drying are difficult to quantify in situ. However, these are significant components of an accurate model. In this study, an attempt to isolate the surface area effect is reported in order to fetch the REA model (reaction engineering approach) parameters without knowing it a priori. Carrot cube and cabbage leaf were selected as experimental material and dried with hot air under a range of conditions. Shrinkages was calculated using an optical method which is used to qualitatively compare with that "calculated" using the current approach. By matching the experimental temperature and moisture content profiles against time after obtaining REA parameters for both samples without knowing the surface area, the surface areas can be "calculated" numerically. Surface area was found to be affected by sample temperature as well as the moisture content. Drying simulations can be well carried out when correlating the surface area against sample moisture content X and temperature T, and it provides the best accuracy in predicting data on T and X vs. time. In addition, carrot cube can shrink ideally while cabbage leaf cannot. The overall relative errors of predicted moisture content and temperature were less than 1%.

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Section: A General Description Of the Reaction Engineering Approach M...mentioning

confidence: 99%

Obtaining model parameters of drying kinetics for highly shrinkable materials without knowing the surface area a priori

Liu

Yang

et al. 2022

AIChE Journal

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“…The governing equations of the REA model for HAD are summarized in Sect. S5 of the Supporting Information, the detail description of this model can be found in [29].…”

Section: Rea Model-based Comparative Study Between Had and Ssdmentioning

confidence: 99%

“…Compared to the evaporation from pure liquid water droplets to superheated steam, the drying rate in these semi-empirical drying models is reduced to account for the additional mass transfer resistance due to the interaction of solid and liquid phases in the wet medium. This drying rate drop is considered by the drying rate retardation coefficient in a characteristic drying curve model [29] and by a surface temperature multiplier in the master curve model [28]. This paper presents the attempt to develop a simple and effective lumped model based on the reaction engineering approach (REA).…”

Section: Introductionmentioning

confidence: 99%

“…This paper presents the attempt to develop a simple and effective lumped model based on the reaction engineering approach (REA). In this model, the drying rate is considered as an evaporation reaction rate and the activation energy serves as an energy barrier for the water removal [21,29,30]. The salient feature of the REA model is its extrapolation ability.…”

Section: Introductionmentioning

confidence: 99%

“…The lumped REA models have widely been applied to simulate the drying kinetics of thin porous layers as well as small droplets and particles during the hot air drying process [31,32]. Compared to characteristic drying curve models [29], the key advantage of REA models is that only one set of trustworthy experimental data is required to determine the REA model parameter which seems to be sufficient to describe the drying process under other operating conditions [21,29,30]. Due to this advantage, it is worthwhile to study the SSD process using a lumped model developed based on the REA approach.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Superheated Steam Drying of Single Wood Particles: Modeling and Comparative Study with Hot Air Drying

Tran

Tsotsas

et al. 2020

Chem Eng & Technol

Self Cite

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A deterministic model is developed to describe the superheated steam drying process of single wood particles. A comparison between calculated data and experimental observations infers that the moisture‐dependent effective diffusivity is suitable to be used for beechwood material drying. To reduce the computational cost of the deterministic drying model, a semi‐empirical model is proposed within the framework of a reaction engineering approach (REA). The validity of the proposed model is checked by comparing against experimental data from literature. The experimental drying behavior may fairly be reflected by the reduced model. Due to the simplicity and predictive ability of the REA model, this semi‐empirical model can be implemented to describe heat and mass transfer between a population of single particles and a drying agent in dryer models.

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A conspectus review on solar drying of wood: regional and technical contrivances

Kumar

Raj

Szepesi

et al. 2023

J Therm Anal Calorim

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Reaction engineering approach for modeling single wood particle drying at elevated air temperature

Cited by 16 publications

References 27 publications

Obtaining model parameters of drying kinetics for highly shrinkable materials without knowing the surface area a priori

Obtaining model parameters of drying kinetics for highly shrinkable materials without knowing the surface area a priori

Superheated Steam Drying of Single Wood Particles: Modeling and Comparative Study with Hot Air Drying

A conspectus review on solar drying of wood: regional and technical contrivances

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