TY - JOUR
T1 - Electrohydrodynamic drying of sand
AU - Singh, Ashutosh
AU - Vanga, Sai Kranthi Kumar
AU - Raveendran Nair, Gopu
AU - Gariepy, Yvan
AU - Orsat, Valerie
AU - Raghavan, Vijaya
N1 - Publisher Copyright:
© 2017 Taylor & Francis.
Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2017/2/17
Y1 - 2017/2/17
N2 - This study analyzes the electrohydrodynamic (EHD) drying characteristics of sand. Effect of process parameters (independent variables) including air speed, electrode gap, and applied voltage on drying kinetics and dependent variables including percentage water removed (%), Sherwood number, EHD number, and specific energy consumed (SEC) (kJ/kg) were also investigated using a central composite design and response surface methodology. Maximum drying was obtained for process parameter combination of air speed (2 m/s), electrode gap (1.5 cm), and applied voltage (15 kV). Air speed and electric field intensity (ratio of applied voltage to electrode gap) were found to have a significant effect on percentage water removed (%) and Sherwood number. In case of EHD number and SEC during the EHD drying process, all process parameters had a significant effect on them. The SEC increased with an increase in applied voltage but reduced with an increase in air speed at any given applied voltage suggesting that the EHD drying process, in combination with cross flow, will lead to higher drying rate and low energy consumption under ambient conditions. Regression models were also developed describing the relation between independent and dependent variables.
AB - This study analyzes the electrohydrodynamic (EHD) drying characteristics of sand. Effect of process parameters (independent variables) including air speed, electrode gap, and applied voltage on drying kinetics and dependent variables including percentage water removed (%), Sherwood number, EHD number, and specific energy consumed (SEC) (kJ/kg) were also investigated using a central composite design and response surface methodology. Maximum drying was obtained for process parameter combination of air speed (2 m/s), electrode gap (1.5 cm), and applied voltage (15 kV). Air speed and electric field intensity (ratio of applied voltage to electrode gap) were found to have a significant effect on percentage water removed (%) and Sherwood number. In case of EHD number and SEC during the EHD drying process, all process parameters had a significant effect on them. The SEC increased with an increase in applied voltage but reduced with an increase in air speed at any given applied voltage suggesting that the EHD drying process, in combination with cross flow, will lead to higher drying rate and low energy consumption under ambient conditions. Regression models were also developed describing the relation between independent and dependent variables.
KW - Drying kinetics
KW - electric field intensity
KW - electrohydrodynamic drying
KW - specific energy consumption
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U2 - 10.1080/07373937.2016.1170028
DO - 10.1080/07373937.2016.1170028
M3 - Article
AN - SCOPUS:85011394800
SN - 0737-3937
VL - 35
SP - 312
EP - 322
JO - Drying Technology
JF - Drying Technology
IS - 3
ER -