Mathematical Model of Thin Layer Drying of Ganoderma Lucidum by Radio Frequency Assisted Heat Pump Drying

Pham, Kien Van; Duc, Le Anh; Hay, Nguyen

doi:10.5098/hmt.18.44

Cited by 4 publications

(1 citation statement)

References 19 publications

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“…Xu Zhou and Shaojin Wang (2019) studied the drying techniques using RF for drying agricultural products and foods, in which, the RF volumetric heating mechanism significantly improved the drying rate and the quality of the dried products. Le Anh Duc et al, (2022) conducted the RF assisted heat pump drying of Ganoderma lucidum and the experimental drying results showed that increasing RF power increased the moisture ratio and reduced the drying time significantly.…”

Section: Introductionmentioning

confidence: 99%

Heat and Mass Transfer in Drying of Carrot by Radio Frequency Assisted Heat Pump Drying

Pham¹,

Duc²,

Tan³

et al. 2023

Front. Heat Mass Transf.

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This study focused on the heat and mass transfer in radio (RF) assisted heat pump (HP) drying of carrots. The experimental drying of carrot by RF assisted HP drying method was conducted to evaluate the effect of RF power on drying efficiency including drying rate and heating rate. The input drying parameters were drying air temperature of 45 o C, drying air velocity of 2.5 m/s and RF power of 0, 0.5 and 1.5 kW, in which, RF power of 0 was corresponding to HP drying method. The experimental drying results showed that in RF assisted HP drying method, the drying rate and heating rate were improved as compared to HP drying. The drying time was 480, 375 and 335 minutes corresponding to RF power of 0, 0.5 and 1.5 kW. The temperature of drying material reached the drying air temperature in about 25 and 30 minutes corresponding to RF power of 1.5 and 0.5 kW. While in HP drying, the temperature of drying material reached nearly the drying air temperature value in about 310 minutes. Besides, the comparison between the heat and mass equations solving results and experimental drying data was also carried out with the analysis results confirmed that the predicted data by numerically solving the heat and mass transfer equations could be used to predict the experimental data accurately.

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Section: Introductionmentioning

confidence: 99%

Heat and Mass Transfer in Drying of Carrot by Radio Frequency Assisted Heat Pump Drying

Pham¹,

Duc²,

Tan³

et al. 2023

Front. Heat Mass Transf.

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show abstract

Recent developments in heat pump dryers focusing on methods of supplying and reducing their energy consumption

Deymi-Dashtebayaz,

Mostafa,

Asadi

et al. 2024

J Therm Anal Calorim

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Heat and Mass Transfer in Infrared Assisted Heat Pump Drying of Purple Yam

Kien,

Tan,

Nghia

et al. 2024

Agricultural Engineering

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This study focused on an engineering problem of heat and mass transfer in infrared (IR) assisted heat pump (HP) drying of purple yam including both a drying experiment and theory of heat and mass transfer mathematical equations. The experimental drying of yam by the IR assisted HP drying method was performed to evaluate the effect of IR power on drying rate and heating rate. The input drying parameters included the drying air temperature of 50°C, drying air velocity of 2.5 m·s−1 and IR power of 0, 300 and 350 W, in which, at the IR power of 0 W, the HP-only drying mode was performed. The experimental drying results showed that the IR assisted HP drying method could improve the drying rate and heating rate as compared to HP-only drying. At the IR power of 350 W, the drying time was the shortest (150 minutes), followed by the IR power of 300 W (210 minutes) and HP-only drying (300 minutes). The IR assisted HP drying obtained the high heating rate as the time required for the drying material to reach the drying temperature was about 35 and 25 minutes corresponding to the IR power of 300 and 350 W. While in HP-only drying, it took about 270 minutes for the drying material’s temperature to reach nearly the drying air temperature value. Besides, the comparison between the predicted data by numerically solving the heat and mass transfer equations and experimental drying data was also conducted. The analysis results indicated that the predicted data could be used to predict the experimental data accurately. The theoretical results of heat and mass transfer in the IR assisted HP drying process as well as experimental drying results would be the basis for improving the IR assisted HP drying equipment to achieve the drying efficiency including the drying rate, quality of dried products, and energy consumption.

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Mathematical Model of Thin Layer Drying of Ganoderma Lucidum by Radio Frequency Assisted Heat Pump Drying

Cited by 4 publications

References 19 publications

Heat and Mass Transfer in Drying of Carrot by Radio Frequency Assisted Heat Pump Drying

Heat and Mass Transfer in Drying of Carrot by Radio Frequency Assisted Heat Pump Drying

Recent developments in heat pump dryers focusing on methods of supplying and reducing their energy consumption

Heat and Mass Transfer in Infrared Assisted Heat Pump Drying of Purple Yam

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