Kinetics of drying of Mint Leaves and Energy Consumption in Thermal Dryers Equipped with Nano-Adsorbents: Examination and Analysis

Pouya, Mohsen; BEHESHTI, Babak; Borghei, Ali Mohamad; Asadi, Gholam Hassan

doi:10.22092/amsr.2022.357853.1412

Document Type : Original Article

Authors

¹ PhD student in Biosystems Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran

² Department of Biosystems engineering, Science and Research branch, Islamic Azad University, Tehran, Iran.

³ Department of Biosystems Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran

⁴ Department of Food Industry Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran

https://doi.org/10.22092/amsr.2022.357853.1412

Abstract

This study evaluated the performance of a thermal dryer with a closed air circulation system equipped with a metal-organic framework (MOF) system. Dryer sections included: product drying chamber, the MOF containing chamber nano-absorbents, measurement and control systems. Dryer yield on mint was compared at three temperature levels (40, 50, and 60 °C). Finally, the energy consumption and drying mint leaves was evaluated. The results showed that the closed air circulation system reduces the dry time by 27% to 50%, the penetration coefficient of mint leaves increased with increasing temperature. Its values in cases of not using and using nano-absorbent plates were determined respectively (4.05690×10^-11) and (2.8215×10^-10) m²/s. The activation energy in two methods of not using and using the nano-absorbents was 45.72 and 51.96 kJ/mol, respectively, which is consistent with the researchers' results. Also, the coefficient of performance, the rate of moisture evaporation, and the rate of specific moisture evaporation showed the effectiveness of using nano-absorbent in the dryer system and reducing energy consumption. The total color index (ΔE) did not change much with increasing temperature from 40 to 50 °C, but from 50 to 60 °C, the increased total color index. There wasn't a clear difference in total color index between the two methods of using and not using nano-adsorbent.

Keywords

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Agricultural Mechanization and Systems Research

Kinetics of drying of Mint Leaves and Energy Consumption in Thermal Dryers Equipped with Nano-Adsorbents: Examination and Analysis

References

References

Volume 23, Issue 83 - Serial Number 83
December 2022
Pages 13-32

Kinetics of drying of Mint Leaves and Energy Consumption in Thermal Dryers Equipped with Nano-Adsorbents: Examination and Analysis

References

References

Volume 23, Issue 83 - Serial Number 83December 2022Pages 13-32

Volume 23, Issue 83 - Serial Number 83
December 2022
Pages 13-32