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

Adelaja, Adekunle O.; Ojolo, S.J.

doi:10.4028/www.scientific.net/jera.3.49

Cited by 5 publications

(7 citation statements)

References 13 publications

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“…Figure 5 showed the temperature various level. This result was slightly higher than 56.7 o C maximum chamber temperature reported by [15] for hybrid photovoltaic integrated greenhouse dryer and 55 o C by [16] for forced convention photovoltaic solar dryer for the tropics. The temperatures range inside the hybrid dryer chamber was much higher than that inside the solar dryer chamber and ambient temperature during most hours of the daylight.…”

Section: Figure 4: Ambient Drying Chamber's Inlet and Outlet Temperacontrasting

confidence: 56%

“…The following determinant factors and assumptions were taken into consideration when constructing the hybrid dryer based on the procedures described by [16,4];…”

Section: Design Consideration and Specificationsmentioning

confidence: 99%

“…The top head is cover with a head cover (8) to protect the extractor fan and protect the chamber. The wall of the drying box is connected to the solar collector (16) and tilted at an angle of 17 o C to the horizontal to give an inclination equal to the latitude of Yola (7 o C). The collector consists of an absorber plate made of aluminum sheet painted black and a transparent glass (11) of 5mm tick which permit in only sun radiation.…”

Section: Figure 2: Exploded View Of the Hybrid Dryermentioning

confidence: 99%

“…Based on the aforementioned fact, considerable studies on photovoltaic (PV) module to power dryers for forced convection air circulation have been reported among which are; [14] that developed a PV operated forced convection solar energy dryer; Barnwal and Tiwari (2008) [15] reported a hybrid solar grain dryer with a PVdriven DC fan which was used to dry maize [16] and also designed, analysed and evaluated a forced convection photovoltaic solar dryer which was used to dry plantain chips.…”

Section: Introductionmentioning

confidence: 99%

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Design, Construction and Testing of a Hybrid Photovoltaic (PV) Solar Dryer

Hussein¹,

Ma²,

Kareem³

et al. 2017

engineering-journal

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The thin layer drying behaviour of tomato slices using a hybrid drying method compared to solar and open sun drying was investigated. The dryer consists of solar collector, photovoltaic solar panel, battery and drying chamber. The dryer was operated as both a solar-energy dryer and as a hybrid solar dryer. The drying performance of the dryer was evaluated with fresh tomato slice and compared with open sun drying under the same climatic conditions. The dryer recorded a raised temperature of 62℃ attainable in the drying chamber of hybrid dryer and 54 o C attainable in the drying chamber of solar dryer. The moisture content of tomato slices was reduced from 94.22 % wet basis to 10 % in 6 hours for hybrid drying method while it took 9 hours to achieve the same moisture content reduction in the solar dryer. The average drying rate and the efficiency was computed as 0.0800kg/h and 71% for hybrid dryer and 0.0578kg/h and 65% for solar-energy dryer respectively. The quality of the tomato samples dried using the hybrid dryer was superior to those of solar and sun drying methods. From the result of this study it shows that a hybrid solar-energy dryer using photovoltaic (PV) solar panel suggested a promising process for adoption to preserve tomato which can prevent it from spoilage and post-harvest losses. The good quality and shelf stable dried tomato slices is indicative for a sustainable productivity that will create a sound avenue for economic growth in tomato producing regions of the world.

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Section: Figure 4: Ambient Drying Chamber's Inlet and Outlet Temperacontrasting

confidence: 56%

“…The following determinant factors and assumptions were taken into consideration when constructing the hybrid dryer based on the procedures described by [16,4];…”

Section: Design Consideration and Specificationsmentioning

confidence: 99%

Section: Figure 2: Exploded View Of the Hybrid Dryermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Design, Construction and Testing of a Hybrid Photovoltaic (PV) Solar Dryer

Hussein¹,

Ma²,

Kareem³

et al. 2017

engineering-journal

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“…This drying technique is in no way a new concept. Over the past four decades, there has been a steady evolution of solar dryer technology from natural convection types (direct and passive mode) to forced convection types [1][2][3][4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Analysis and Testing of a Natural Convection Solar Dryer for the Tropics

Adelaja

Babatope

2013

Journal of Energy

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Solar dryers are imperative for the tropical and sub-Saharan African countries, which are faced with the duo challenges of inadequate electrical energy supply, which has severely limited the application of conventional refrigeration as a means of preservation of agricultural produce, and the need to make produce competitive in the international market. In this study, a cost-effective natural convection solar dryer was developed; the thermal and drying analyses were done and tested to obtain some performance evaluation parameters for the system in order to examine its efficiency and effectiveness by drying some plantain fillets. The collector and system efficiencies are found to be 46.4% and 78.73%, respectively, while a percentage moisture removal of 77.5% was achieved at the 20th hour in order to give final moisture contents of 15.75% in the product, which still maintained its integrity. With a cost of about $195.00, it has been affordable for the small- and medium-scale enterprises as well as for private use in domestic applications.

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