Modeling and Design of a Solar Rotary Dryer Bench Test for Phosphate Sludge

Ettahi, Khadija; Chaanaoui, Meriem; Vaudreuil, Sébastien; Abderafi, Souad; Bounahmidi, Tijani

doi:10.1155/2022/5574242

Cited by 5 publications

(3 citation statements)

References 34 publications

(43 reference statements)

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“…This apparatus, consisting of a continuously rotating cylinder or drum, receives heat from an energy source such as biomass and is particularly appropriate for granular food products like grains [6]. The widespread adoption of rotary dryers across various applications, including heating, cooling, mixing, and drying processes, can be attributed to their ability to provide uniform drying, ease of operation, and costeffectiveness [7][8][9]. The design of these dryers is tailored to utilize waste energy sources that are readily available and economically viable, making them well-suited for rural farming communities.…”

Section: Figure 1 Black Soldier Fly Life Cycle [1]mentioning

confidence: 99%

Development and Performance Evaluation of an Eco-Friendly Rotary Drum Roasting Machine for Maggot Processing Using Biomass Energy

Saputra,

Susastriawan,

Rahayu

2023

IJDNE

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The burgeoning interest in maggot-based feed necessitates cost-effective production methods. Traditional roasting techniques for converting fresh maggots into fish feed pellets, predominantly reliant on liquefied petroleum gas (LPG) burners, impose substantial operational costs. Addressing this challenge, the current study introduces a biomass-fueled roasting machine, engineered to reduce energy expenditure and enhance environmental sustainability. Fabricated in a Yogyakarta-based workshop, the ecofriendly roaster features a stainless steel rotary drum (500 mm diameter, 1000 mm length, 3 mm thickness) actuated by a 2 HP electric motor at 28 rotations per minute. The machine's performance was evaluated through temperature profiling, roasting rate, useful heat generation, specific energy consumption (SEC), and overall effectiveness. These parameters were assessed during the roasting of 10 kg and 30 kg batches of fresh maggots over a two-hour period, utilizing teak firewood as the biomass energy source. The empirical findings indicated an optimized performance at the 30 kg capacity, with a roasting rate of 2.86 g/s, useful heat delivery of 62168.30 kJ, an effectiveness of 0.69, and an SEC of 12798.78 kJ/kg water evaporated. The introduction of this roasting machine not only simplifies the maggot pellet production process but also diminishes investment costs. More critically, it encourages the utilization of biomass waste, slashes operational expenses for maggot farmers, and aligns with the principles of sustainable agriculture. This study underscores the potential of integrating biomass-based technologies within the aquaculture feed industry, promoting both economic and environmental benefits.

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Section: Figure 1 Black Soldier Fly Life Cycle [1]mentioning

confidence: 99%

Development and Performance Evaluation of an Eco-Friendly Rotary Drum Roasting Machine for Maggot Processing Using Biomass Energy

Saputra,

Susastriawan,

Rahayu

2023

IJDNE

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“…Sun drying is very dependent on the weather and causes fatigue to workers due to sun exposure. The dryer design in Figure 1 has been tested to dry corn, fruit lunkhead, and red chili [25,26,27]. From several tests carried out, it was found that there was a significant increase in temperature and a shorter drying time than sun drying.…”

Section: Figurementioning

confidence: 99%

Rotary dryer in a study based on participatory principles for smallholder scale drying

Alit¹,

Susana²

2022

Global J. Eng. Technol. Adv.

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Small farmers who mostly live in rural areas need a cheap and easy technique for the post-harvest production process, especially drying. The participation of farmers is very much needed so that the design of work tools according to their needs and their use can be sustainable. So far, sun drying is very dependent on the weather and causes fatigue to farmers due to sun exposure. To overcome this, a dryer was designed with the application of participatory principles which is part of the ergonomics application. With the participatory principle, a rotary type dryer was developed for grain drying. Energy sources use rice husks, which are widely available so that they are easy to obtain and inexpensive. The rotary-type dryer design utilizes this biomass by energy conversion using a heat exchanger. It is hoped that this type of tool is cheap and easy to operate so that it can be accepted by small farmers. In addition, small farmers do not experience additional workloads due to sun exposure which has an impact on the risk of fatigue, increasing productivity.

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“…Rotary dryers in the form of cylinders or drums that rotate continuously with energy from biomass are very suitable for use by small farmers. Mixing, cooling, heating, and drying processes for granular materials widely use rotary drums [10,11,12]. Rotary dryers with rice husk energy sources are carried out using the energy conversion method using a heat exchanger.…”

Section: Introductionmentioning

confidence: 99%

Thermal Study of the Utilization of Rice Husks Using the Forced Convection Method as Energy for a Rotating Cylinder Dryer

Alit,

Susana

2023

JENRR

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Small farmers in rural areas use the sun as their main energy source to dry post-harvest products. Due to limited knowledge and technology, farmers depend on the sun through direct drying. Direct use of the sun for the drying process has disadvantages in uncertain weather such as cloudy or rainy. This results in the drying process not being optimal or even stopping. This research aims to use rice husks as energy to replace direct sun drying to produce optimal temperatures so that drying time is shorter and the quality of the dried food is hygienic. Rice husk as an energy source is applied through a rotating cylinder dryer. This dryer is tailored to farmers' needs, namely easy to operate at an affordable price. This energy can be utilized sustainably because it is abundant through a forced convection system and energy conversion using a heat exchanger. The design of the compact rotary dryer includes an integrated drying chamber in one unit with the combustion furnace and a heat exchanger. The drying chamber includes a rotating cylinder and a fixed cylinder. The test results show that hot air from burning rice husks flows through the heat exchange pipes by conduction from the furnace to the walls of the drying chamber and by forced convection through an exhaust fan installed in the drying chamber. The average environmental temperature of 29.55-29.69oC has increased when using one exhaust fan to 64.46oC and two exhaust fans to 60.11oC. This drying temperature can produce shorter drying times, so it can be applied to post-harvest product drying, which is energy-efficient and sustainable for small farmers. Based on research results, rotating cylinder dryers powered by rice husks are very suitable for small farmers to replace direct sun drying.

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Modeling and Design of a Solar Rotary Dryer Bench Test for Phosphate Sludge

Cited by 5 publications

References 34 publications

Development and Performance Evaluation of an Eco-Friendly Rotary Drum Roasting Machine for Maggot Processing Using Biomass Energy

Development and Performance Evaluation of an Eco-Friendly Rotary Drum Roasting Machine for Maggot Processing Using Biomass Energy

Rotary dryer in a study based on participatory principles for smallholder scale drying

Thermal Study of the Utilization of Rice Husks Using the Forced Convection Method as Energy for a Rotating Cylinder Dryer

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