Performance Study of Fluidized Bed Dryer with Immersed Heater for Paddy Drying

Suherman, Suherman; Azaria, N F; Karami, Seema

doi:10.1088/1757-899x/316/1/012026

Cited by 7 publications

(2 citation statements)

References 11 publications

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“…The purpose of drying is to partially eliminate the moisture content from the products to reach the safe limit so it cannot become a medium for spreading microorganisms, which may decrease the coffee bean quality (Suherman et al 2018). Solar drying has been used for the preservation of food, agricultural, and marine products for a long time.…”

Section: Introductionmentioning

confidence: 99%

Energy Analysis of a Hybrid Solar Dryer for Drying Coffee Beans

Suherman

Widuri

Patricia

et al. 2020

Int. J. Renew. Energy Dev.

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In this study, hybrid solar drying of coffee beans was performed, and energy analysis was carried out, to assess the system’s performance, in terms of energy efficiency, compared to solar drying and the open sun drying method. The dryer has three compartments: solar collector for collecting solar radiation, drying chamber, and a Liquid Petroleum Gas burner, which acted as an auxiliary heater to assist the thermal energy. The drying chamber has four trays for placing the dried product. The initial moisture content of coffee beans was 54.23% w.b and was reduced to the final moisture content between 11-12% w.b. The coffee beans dried faster when subjected to the solar hybrid drying method, compared to other methods, with the dryer temperature of 40°C, 50°C, and 60°C. Results indicated that the coffee beans’ drying times varied from 10 to 14 hours. However, at temperature 50°C and 60°C for the 1st tray, the water content was reduced more rapidly compared to the other tray. From the results of this study, we can see the different efficiency of solar collector that shows of 54.15% at variable temperature 60°C for drying time 12:00 to 14:00 p.m for hybrid solar drying and for the solar drying process is 50.07% at the range of drying time 12:00 to 14:00 p.m. Mathematical modelling shows that Page model is the most suitable for describing the coffee beans’ drying behaviour using a hybrid solar dryer. The effective diffusivity values found in this experiment are all in the acceptable range for most agricultural products. ©2020. CBIORE-IJRED. All rights reserved

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Section: Introductionmentioning

confidence: 99%

Energy Analysis of a Hybrid Solar Dryer for Drying Coffee Beans

Suherman

Widuri

Patricia

et al. 2020

Int. J. Renew. Energy Dev.

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“…A heater separated from the blower assembly was used for hot air production to feed the fluidized bed dryer as a new alternative to produce dark brown parboiled rice [9]. Whereas some fluidized beds are designed with immersed heaters [10] [11] of which compressed air or blower systems are used to supply needed air for drying. A different approach to producing hot air for drying in a fluidized bed dryer is considered in this work for the purpose of cost saving and safety for smaller and laboratory fluidized bed dryers.…”

Section: Production Of Hot Air For Fluidization Dryingmentioning

confidence: 99%

Mathematical Modelling and Design of Helical Coil Heat Exchanger for Production of Hot Air for Fluidized Bed Dryer

Uwa,

Inyang,

Oboh

2024

ACES

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In global industrialization, efforts have been made to increase the rate of heat transfer in heat exchanger, minimizing the size of heat exchanger to reduce cost as well as increasing the effectiveness. Helical coil heat exchanger (HCHE) has been proven to be effective in improving heat transfer due to its large surface area. In this study, HCHE was designed to provide hot air needed for fluidized bed drying processes. The HCHE design model was fabricated and evaluated to study the efficiency of the hot air output for a laboratory fluidized bed dryer. The mathematical model for estimation of the final (output) temperature of air, T af , passing through the HCHE was developed and validated experimentally. The drying of bitter kola particulates was carried out with a drying temperature of 50˚C ± 3˚C and a bed height-to-bed diameter ratio (H/D) of 1.5. The time taken to dry bitter kola particulates to 0.4% moisture content was 1 hour 45 minutes. Hence, HCHE is recommended for use in the production of hot for laboratory-scale fluidized bed dryers.

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Energetic, economic, and global warming aspects of fluidized bed drying of the medicinal plant Echium Amoenum Fisch. & C. A. Mey

Nadi

2021

Env Prog and Sustain Energy

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This research aims to conduct a comprehensive analysis of the drying conditions in a pilot-scale fluidized bed dryer by considering energetic, economic and global warming aspects. Echium amoenum Fisch. & C. A. Mey. E. amoenum petals were dried at a temperature range of 40-60 C and air velocities of 0.5 to 1 m s À1 . According to the results, the air velocity has a positive effect but the drying temperature has a negative impact on the specific energy consumption (SEC), the production cost and the GHG emissions. It was observed that the case of 0.5 m s À1 air velocity and 60 C drying temperature, the production cost, the SEC and the GHG emissions were minimized. However, considering the quality of the dried E. amoenum petals the optimal conditions were obtained at 60 C drying temperature and 0.91 m s À1 air velocity.Under these conditions, GHG emissions, production cost and SEC of dried E. amoenum petals would be 60.56 g CO 2 kg À1 , $38.87 kg À1 of dried E. amoenum petals and 29.87 MJ kg À1 of evaporated water, respectively.

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Performance Study of Fluidized Bed Dryer with Immersed Heater for Paddy Drying

Cited by 7 publications

References 11 publications

Energy Analysis of a Hybrid Solar Dryer for Drying Coffee Beans

Energy Analysis of a Hybrid Solar Dryer for Drying Coffee Beans

Mathematical Modelling and Design of Helical Coil Heat Exchanger for Production of Hot Air for Fluidized Bed Dryer

Energetic, economic, and global warming aspects of fluidized bed drying of the medicinal plant Echium Amoenum Fisch. & C. A. Mey

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