Open Access
ARTICLE
MATHEMATICAL MODEL OF THIN LAYER DRYING OF GANODERMA LUCIDUM BY RADIO FREQUENCY ASSISTED HEAT PUMP DRYING
Le Anh Duca
, Nguyen Haya, Pham Van Kienb,*
a Nong Lam University, Ho Chi Minh City, 700000, Vietnam
b Faculty of Automotive Engineering, School of Engineering and Technology, Van Lang University, Ho Chi Minh City, 700000, Vietnam
* Corresponding author. Email: kien.pv@vlu.edu.vn
Frontiers in Heat and Mass Transfer 2022, 18, 1-7. https://doi.org/10.5098/hmt.18.44
Abstract
This study determined the most appropriate thin layer drying model, the effective moisture diffusivity and the activation energy of moisture within
Ganoderma lucidum in radio frequency (RF) assisted heat pump drying method. The thin layer drying experiments were conducted with input drying
parameters such as: drying temperature of 40, 45 and 50°C and RF power of 0.65, 1.3 and 1.95 kW. In order to select a suitable form of drying curve,
seven different thin layer drying models (Lewis, Page, Modified Page, Henderson and Pabis, Verma, Midilli, and Wang and Singh) were fitted to the
experimental data. The Verma model was the most adequate model for describing the thin layer drying of Ganoderma lucidum. The average effective
moisture diffusivity values varied from 2.34×10
-9 to 3.54×10
-9 m
2
/s. The activation energy values varied from 18.27 to 19.61 kJ/mol over the
proposed range of drying temperature and RF power.
Keywords
Cite This Article
Duc, L. A., Kien, P. V. (2022). MATHEMATICAL MODEL OF THIN LAYER DRYING OF GANODERMA LUCIDUM BY RADIO FREQUENCY ASSISTED HEAT PUMP DRYING.
Frontiers in Heat and Mass Transfer, 18(1), 1–7.