Design and Performance Evaluation of a Solar Dryer

Kilanko, O.; Ilori, T.A.; Leramo, R.O.; Babalola, P.O.; Eluwa, S.E.; Onyenma, F. A.; Ameh, N.I.; Onwordi, P.; Aworinde, Abraham K.; Fajobi, M. A.

doi:10.1088/1742-6596/1378/3/032001

Cited by 9 publications

(6 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover, the ambient temperature throughout the experiments was lower than the temperature of the drying chamber. This difference ranged from 1 o C to 7 o C as observed by [19,20]. The difference was highest in the afternoon (between 12noon to 3pm) within the range of 2.…”

Section: Resultssupporting

confidence: 54%

"Development of an Improved Smart Solar Post-harvest Dryer "

Princewill¹,

Uchechukwu²,

Toju³

et al. 2023

IJASE

View full text Add to dashboard Cite

The most potent way to address the issue of food scarcity as the global population rises is the reduction of food losses. Drying is a major channel of achieving safety and security of food items. In this study, an improved smart solar dryer was developed and its performance was evaluated. 200g of fresh corn and 400g of ripe plantain were used to investigate the performance of the developed dryer. Both products were weighed and placed in the dryer and open sun drying for some days. Moreover, weight losses of the products in the dryer and open sun as well as various temperatures were measured. The results showed that the ambient temperature during the experiments was lower than the temperature of the drying chamber. In this experiment with 200g of fresh corn and 400g of unripe plantain, an overall moisture content of 78% w.b and 76.2% w.b were removed from fresh corn and ripe plantain in the dryer within 7 days. However, 72.4% w.b. and 70.4% w.b. moisture content were removed from fresh corn and ripe plantain placed in open sun drying for 10 days. The efficiency of sun drying was 49.54% for ripe plantain and 25.48% for fresh corn whilst the dryer was 27.45% and 53.67% for fresh corn and ripe plantain respectively. The developed smart solar dryer is economically viable and preferred to be replicated among local farmers in Nigeria so as to protect the environment and saves cost and time spent on open sun drying of farm produce.

show abstract

Section: Resultssupporting

confidence: 54%

"Development of an Improved Smart Solar Post-harvest Dryer "

Princewill¹,

Uchechukwu²,

Toju³

et al. 2023

IJASE

View full text Add to dashboard Cite

show abstract

“…Based on the initial food product sample's (wet material) mass of water removal, an estimate of that amount is made by [16]:…”

Section: Performance Evaluation Of Solar Dryermentioning

confidence: 99%

Enhancing Solar Drying Efficiency Through Indirect Solar Dryers Integrated with Phase Change Materials

Majeed,

Faraj,

Hussien

2024

IJHT

View full text Add to dashboard Cite

Since time immemorial, solar radiation has been harnessed for drying a myriad of products such as vegetables, fruits, fish, and meat, primarily through direct exposure to sunlight for moisture removal and desiccation. In recent years, the incorporation of Thermal Energy Storage (TES) systems, capable of storing thermal energy in various states, has emerged as a pivotal innovation for enhancing energy efficiency and utilization. This study elucidates the development and performance evaluation of an indirect-mode solar dryer, augmented with Phase Change Materials (PCMs) for food dehydration. The solar dryer, operating in an indirect mode, channels solar radiation as the heat source from the collector's inlet, directly linked to the drying chamber. Within this setup, potato slices were subjected to dehydration under controlled conditions. The peak temperature recorded in the dryer was 63℃, with the relative humidity plummeting to 40%. Initial moisture content of the potato slices was determined to be 78.58% (w.t). The experimentation, involving a 1kg sample, revealed a marked improvement in drying efficiency with the integration of PCMs. The sample attained the target moisture content of 10% (w.t) in a span of 24 hours with PCM, compared to 33 hours in its absence. Conventional sun drying methods, without any enhancements, necessitated 38 hours for reducing the moisture content to the same level. Notably, the application of a single container of PCM resulted in a 3.26% reduction in heat flux, while the utilization of two different types of wax as PCMs yielded a 2.24% reduction. These findings underscore the significant role of PCMs in optimizing the thermal performance of solar dryers, promising substantial advancements in the field of solar drying technologies.

show abstract

“…Te uncertainty of the solar air heater was calculated using the overall uncertainty of the instrument and the error due to standard deviations and using the equation (2).…”

Section: Uncertainty Analysismentioning

confidence: 99%

“…It is used to convert solar radiation into heat, directly into heat at the absorbing surface, and to transfer this heat into a fuid, either air or fuid [1]. 99.99% of the world energy source is derived from the sun [2]. Solar air heaters (SAHs) are low-cost devices that gather solar energy and distribute heated air at low to moderate temperatures for space heating, drying agricultural items such as fruits, seeds, and vegetables, and in some industrial applications [3].…”

Section: Introductionmentioning

confidence: 99%

CFD Simulations and Experimental Investigation of a Flat-Plate Solar Air Heater at Different Positions of Inlet and Outlet

Belay,

Atnaw

2023

Journal of Renewable Energy

View full text Add to dashboard Cite

In this study, the effects of the positions of inlet and outlet in a single-flow flat plate rectangular box active solar air heater due to convective heat transfer were designed, constructed, theoretically investigated using CFD fluid flow (fluent) software, and experimentally examined. The internal dimensions of the solar air heater are length and width of 100 cm and 50 cm, respectively, and the air gap between absorber plate and glazing glass is 9 cm. The solar air heaters are constructed with 18 mm thickness plywood, 4 mm thickness glazing glass, and 1 mm thickness aluminium sheet metal. Except for the glazing glass, other construction materials are painted black to absorb solar radiation. The positions of the inlet and outlet depend on the fraction of the width of the solar air heater. Based on the three-day average outlet temperature of the solar air heaters, solar air heater B has the highest average outlet temperature compared with other active solar air heaters and ambient air temperatures. Based on the three-day average outlet temperature of solar air heaters and ambient air temperatures, the active solar air heater B outlet temperature is 33.83 percent greater than the ambient air average temperature. The average outlet temperature of the air in passive solar air heaters increased by 17% and 4.43% compared to ambient air and active solar air heaters outlet air temperatures, respectively, due to the speed of the air in the solar air heater. The uncertainty of the instruments to measure the temperature of the air is ± 0.289°C, and the uncertainty of the solar air heater is ± 0.462°C. A higher average air outlet temperature was achieved in March at a tilt angle of 12° at a latitude of 8.89°. The negative tilt angle in May at a latitude of 8.89° indicates the south-facing orientation of solar air heaters is better. The passive solar air heater and ambient air temperature have a higher air temperature fluctuation than the active solar air collector.

show abstract

Design and Performance Evaluation of a Solar Dryer

Cited by 9 publications

References 7 publications

"Development of an Improved Smart Solar Post-harvest Dryer "

"Development of an Improved Smart Solar Post-harvest Dryer "

Enhancing Solar Drying Efficiency Through Indirect Solar Dryers Integrated with Phase Change Materials

CFD Simulations and Experimental Investigation of a Flat-Plate Solar Air Heater at Different Positions of Inlet and Outlet

Contact Info

Product

Resources

About