Sustainable Energy and Artificial Intelligence

Effect of Operational Parameters on Drying Rate and Energy Consumption of Epoxy-Based Coating Powder in a Fluidized Bed Dryer System

Document Type : Original Article

Authors

Alireza Bahramian 1
Alireza Zafari 1
Martin Olazar 2

1 Department of Chemical Engineering, Hamedan University of Technology, Hamedan, Iran

2 Department of Chemical Engineering, University of the Basque Country UPV/EHU, P.O. Box 644-E48080, Bilbao, Spain

https://doi.org/10.61186/seai.2408-1002
Abstract
In this work, the effect of inlet air temperature and volume flow rate is studied on the moisture content of epoxy-based coating powder and energy consumption of a fluidized bed dryer system. The inlet air temperature range was determined to be 45-60 oC based on the glass transition temperature of epoxy-based coating powder. The results showed that by increasing the inlet air temperature in the fluidized bed dryer, the drying rate of the samples increased, where the highest drying rate was obtained at 60 oC. In the temperature range of 55 to 60 oC, an increase in inlet air volume flow rate led to an increase in the drying rate. An increase in the inlet air temperature significantly led to an increase in the energy consumption for drying the samples. The drying rate of the samples did not have a constant trend because of an increase in the inlet air volume flow rate. The results showed the drying rate of samples increased by an increase in volume flow rate from 1.0 to 1.4 m3/s, and its value decreased from 1.4 to 1.6 m3/s. However, the amount of energy consumed by the dried samples increases with the increase in the inlet air volume flow rate. The results of this study can be effective in achieving the optimal amount for drying the powder and reaching the optimum value of less than 2% by spending the minimum amount of necessary energy and the maximum drying rate of the powder.

Highlights

  • The effect of inlet temperature and volumetric air flow rate on the moisture content of epoxy-based coating powder.
  • A direct relationship between the inlet air temperature, drying rate and energy consumption of dryer system.
  • The relationship between the energy consumption and the volumetric flowrate of the inlet air.
  • Study on an optimum moisture content, minimum energy consumption, and the maximum drying rate of powder.

Keywords

Fluidized bed dryer
Drying rate
Energy onsumption
Optimization of parameters
Epoxy-Based Coating Powder

Subjects

Sustainable Energy and Artificial Intelligence
Volume 1, Issue 3 - Serial Number 6
Summer 2025
Pages 193-202

  • Receive Date 27 August 2024
  • Revise Date 10 October 2024
  • Accept Date 30 October 2024
  • First Publish Date 06 November 2024

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