Development of a Photovoltaic Powered Forced Convection Solar Dryer

Adelaja, Adekunle O.; Ogunmola, Bayo Y.; Akolade, P.O.

doi:10.4028/www.scientific.net/amr.62-64.543

Cited by 6 publications

(8 citation statements)

References 7 publications

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“…Solar drying technologies have been categorized as natural convection and forced convection dryers and many designs and studies have been done on both: on natural convection type [3][4][5][6][7][8], on mixed mode [9] and forced convection [10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

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Design, Analysis and Experimental Evaluation of Photovoltaic Forced Convection Solar Dryer for the Tropics

Adelaja

Ojolo

2010

JERA

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The photovoltaic (pv) forced convection solar dryer comprises the solar collector, dryer and pv assemblies. It is designed for a continuous operation throughout the day. The direct solar irradiation is utilized during sunshine hours and it automatically switches power supply to the battery during cloud covers and non-insolation periods. The inclusion of a heat reservoir enables heat transfer to continue during this period. In this study, thermal and dryer analyses were done. Experimental investigations were carried out to evaluate the performance of the system by drying plantain chips. The useful power collected was found to be, 391.50W, collector efficiency, 65.6%, dryer efficiency, 39.6%, average drying rate during insolation, 0.0169kg/hr and total drying time was 23 hours. The maximum temperature attained was 55oC. The average drying non insolation period was 0.0112kg/hr. The capital cost is less than $350.

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Section: Introductionmentioning

confidence: 99%

“…The present work is an improvement on the forced convection dryer developed by Adelaja et al [15]. Some additional features were included to also enable the system to run continuously during noninsolation hours.…”

Section: Introductionmentioning

confidence: 99%

Design, Analysis and Experimental Evaluation of Photovoltaic Forced Convection Solar Dryer for the Tropics

Adelaja

Ojolo

2010

JERA

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“…In order to solve this problem, a solar chimney is coupled to produce air buoyancy. It has been recorded to reduce air drying time by more than one-fifth percent [14]. Current designs feature passive air heating solar collectors, solar chimney in a transparent drying chamber.…”

Section: Introductionmentioning

confidence: 99%

Assessing the Performance of a Blackbody Solar Dryer

Okeniyi,

Akinyemi,

Abodunrin

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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About 33.3% of global food production is lost to spoilage every year. At current rates, that amount is adequate for feeding an average of 300 million people around the world. This huge loss can be decimated to 13.17% if food spoilage is avoided or managed better. One technique for minimizing food waste is solar drying. West Africa and locations around the equatorial plane are described by average daily insolation of about 4-6 kWhm−2. In effect, this energy source could be applied to curb the problem of food spoilage and wastage. Another side attraction of drying with solar is that, it offers year-round availability of food crops. In this study, solar drying is investigated with the principle of blackbody radiation using an electronic data logger coupled with the Arduino Uno, SD Card Module, DHT22 Temperature and Humidity Sensor, SD Card, and Connecting wires to record temperature and humidity data. The output was 56.3°C and 46.8°C for the upper and lower limit of temperature respectively, yielding an average difference of about 10°C. The interaction of sensible blackbody radiation within a four-tier rock bed was crafted into a novel solar dryer design. With this relatively high-temperature gradient between the upper and lower, a blackbody solar dryer constructed was suitable to preserve the both quality and shelf life of agricultural produce.

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“…About photovoltaic (PV) assisted dryers, Adelajaa et al [9] demonstrated the integration of a suction fan which is powered by a solar PV module. An experiment was conducted in June on vegetable (Hydrophyllum).…”

Section: Introductionmentioning

confidence: 99%

Analysis on Photovoltaic Energy-Assisted Drying of Green Peas

Taşkın¹,

İzli²,

Vardar³

2016

International Journal of Photoenergy

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A photovoltaic energy-assisted industrial dryer has been analyzed. The dryer has been tested in various weather and working conditions with 3 kg of green peas from 75.6% initial moisture content to 20% final moisture content (w.b.). The effect of various drying air temperatures at three levels (40, 50, and 60 ∘ C) and two distinct air velocities (3 m/s and 4 m/s) was examined. Drying performance was assessed with regard to criteria including drying kinetics, specific and total energy consumption, and color and rehydration ratio. The results have proved that total drying duration reduces as air velocity rate and drying air temperature raise. Relying upon the drying durations, the generation performances of photovoltaic panels were between 5.261 and 3.953 W. On the other part, energy consumptions of dryer were between 37.417 and 28.111 W. The best specific energy consumption was detected in 50 ∘ C at 3 m/s for 600 minutes with 7.616 kWh/kg. All drying conditions caused darkening as color parameters. Rehydration assays have showed that rehydrated green peas attained higher capacity with raised air temperature and air velocity.

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Development of a Photovoltaic Powered Forced Convection Solar Dryer

Cited by 6 publications

References 7 publications

Design, Analysis and Experimental Evaluation of Photovoltaic Forced Convection Solar Dryer for the Tropics

Design, Analysis and Experimental Evaluation of Photovoltaic Forced Convection Solar Dryer for the Tropics

Assessing the Performance of a Blackbody Solar Dryer

Analysis on Photovoltaic Energy-Assisted Drying of Green Peas

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