Solar drying of jack fruit almonds

Queiroz, Alexandre José de Melo; Dantas, H. J.; Figueirêdo, Rossana Maria Feitosa de; Melo, K. dos S.

doi:10.1590/s0100-69162011000600012

Cited by 9 publications

(11 citation statements)

References 14 publications

(9 reference statements)

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“…The collector is made up of GI sheet of 0.6 mm thick as it is a good conductor and economical. It was painted black to increase the absorption of heat [39,40]. The recommended glass thickness for collector is 5 mm [37].…”

Section: Design Considerationmentioning

confidence: 99%

Design, fabrication and performance evaluation of solar dryer for banana

Hegde¹,

Hosur²,

Rathod³

et al. 2015

Energ Sustain Soc

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Background: An indirect, active-type, environmentally friendly, low-cost solar dryer was designed to dry various agricultural products. The dryer was built by locally available, biologically degradable, low-cost materials. The dryer consists of solar flat plate air heater with three layers of insulation, drying chamber and a fan with a regulator to induce required air flow in the system. Banana is the chosen crop for the experimentation since it is high in production and also has substantial loss in India. Also, dried bananas are having good nutritive value which makes it as essential diet.

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Section: Design Considerationmentioning

confidence: 99%

Design, fabrication and performance evaluation of solar dryer for banana

Hegde¹,

Hosur²,

Rathod³

et al. 2015

Energ Sustain Soc

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“…The results correspond to those achieved by Diógenes (2010), when studying the drying of pumpkin grains flour in the equivalent drier that accumulates solar energy combined with dehydration for direct exposition to the sun, in which achieved fitments with determination coefficient higher than 0.99 for the Page model. Queiroz et al (2011) studying the jackfruit almonds drying, verified for the Logarithmic model, fitments with R 2 higher than 0.99 for the dehydration for exposure to the sun combined with drying in drier accumulated with solar energy, and R 2 above 0.98 for drying in solar energy during the day combined with drying in drier that accumulates solar energy. Sacilik (2007) achieved R 2 above 0.99 for Two Term model and higher than 0.98 for Page model when dehydrating pumpkin seeds in solar drier.…”

Section: Type Of Drying Sample Treatmentmentioning

confidence: 82%

“…In accordance with Queiroz et al (2011), products classified as agricultural waste are often valuable material in the nutritional point of view; this material may also be used in order to increase the yield of the main product. Moreover, its disposal in the environment causes economical and environmental costs, proportional to the exploration volume.…”

Section: Introductionmentioning

confidence: 99%

“…The use of one water body in order to accumulate solar energy has the advantage of being able to be done in a relatively small volume and by using simple solar collectors. In these collectors, the water temperature may rise at 80°C or more, depending on the construction details, as the thermal isolation (Queiroz et al, 2011). The solar energy accumulated in the water during the day can be used for dryings during the nocturnal period, by heating the air of the drying chamber at temperatures higher than 50°C.…”

Section: Introductionmentioning

confidence: 99%

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Drying of waste grains flour of annatto by using solar energy

Karademır¹,

Karademır²,

Ekinci³

et al. 2012

Afr. J. Agric. Res.

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This study is aimed at drying annatto seed powders produced from seeds with and without oil used in bixin extraction. Drying was done at night, using a solar energy dryer. The drier consists of a system of solar panels that heat water, which is transferred to a thermal reservoir from where it is used as heat source for drying during the night. The waste grain flour of annatto with initial moisture content of approximately 20% w.b. was dried by approximately 5% w.b. The samples were split into two batches: Exposed to external environment and placed in the drier. The drying kinetic data were fitted by five mathematical models. The drier showed effectiveness in the drying of annatto grains flour at night with difference of more than 10% of moisture content in relation to the samples exposed to external environment. Powders obtained from seeds containing oil took approximately 40% longer to dry than those without oil. The mathematical models assessed satisfactorily represented drying behavior. The highest values of diffusivity were found in dehydrated samples in the drier.

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“…Therefore, solar dryers provide a faster, more uniform and hygienic form of drying, which results in a better product for the food industry. Nonetheless Queiroz et al (2011) have proposed a process that collects solar power through solar panels during the day and accumulates it in a water body in order to continue the drying process at night. Solar power stored in water during the day and used in drying during the night heats the air in the drying chamber at temperatures higher than 50 °C (SANTOS et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Drying of Residual Grains of Annatto in a Heat Accumulator Dryer Combined With Drying in a Solar Dryer

et al. 2014

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This paper is a study of the drying process of residual grains of annatto in a heat accumulator dryer during the night combined with a solar dryer during the day. Different mathematical models were adjusted regarding experimental data for the dryings and for determining the effective diffusivity for all the processes. The grains were divided into two groups; one with oil, reproducing the conditions of the grains after the oily extraction of bixin, and another group without oil. The drying of the annatto grains of during the night was performed with a heat accumulator dryer, which consisted of solar panel systems that heat water, which is transferred to a thermal tank where it is used as a heat source; during the day a solar dryer was used. Residual grains of annatto with an initial moisture at ~18 % w.b. were dehydrated until they reached ~5 % w.b. Combined drying using a heat accumulator dryer and a solar dryer proved to be effi cient, with samples presenting lower amounts of moisture compared to the control samples. Midilli's equation was considered the best model to represent the kinetics of drying residual grains of annatto both with and without oil. Grain samples presented effective diffusivity in the order of 10 -9 m 2 s -1 .

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Solar drying of jack fruit almonds

Cited by 9 publications

References 14 publications

Design, fabrication and performance evaluation of solar dryer for banana

Design, fabrication and performance evaluation of solar dryer for banana

Drying of waste grains flour of annatto by using solar energy

Drying of Residual Grains of Annatto in a Heat Accumulator Dryer Combined With Drying in a Solar Dryer

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