Thin layer drying model for simulating the drying of Tilapia fish (Oreochromis niloticus) in a solar tunnel dryer

Kituu, Gareth M.; Shitanda, Douglas; Kanali, Christopher; Mailutha, J. T.; Njoroge, CK; Wainaina, J.K.; Silayo, V.K.

doi:10.1016/j.jfoodeng.2010.01.009

Cited by 66 publications

(43 citation statements)

References 16 publications

(20 reference statements)

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“…The moisture ratio reduced faster in the beginning than that at the end. This observation is consistent with previous results, as observed by Kituu et al [2010]. That can be attributed to the fact that the tilapia fillets contain a large quantity of bulk water in the beginning, relatively easier to be transferred to the sur- face and evaporated.…”

Section: Resultssupporting

confidence: 94%

“…-moisture ratio(-), M 0 , M e , M t , M i -initial moisture content, equilibrium moisture content, moisture content of the product at time t, moisture content of the product at time i, (%), U i -drying rate of the product at time i (g/(g·h)), [Kituu et al, 2010], especially in a heat pump dryer which can satisfy the need of large-scale fish drying in the food processing industry. Thus, it is of importance and necessity to research the drying characteristics of the fresh tilapia fillets in a heat pump dryer.…”

Section: Mrmentioning

confidence: 99%

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Mathematical Modeling on Hot Air Drying of Thin Layer Fresh Tilapia Fillets

Guan¹,

Wang²,

Li³

et al. 2013

Pol. J. Food Nutr. Sci.

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Section: Resultssupporting

confidence: 94%

Section: Mrmentioning

confidence: 99%

Mathematical Modeling on Hot Air Drying of Thin Layer Fresh Tilapia Fillets

Guan¹,

Wang²,

Li³

et al. 2013

Pol. J. Food Nutr. Sci.

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“…entrance temperatures of the dryer chamber increased at the midday, and at the same time a rapid decrease in the moisture content were observed. In addition, relative humidity of the drying chamber decreased due to the higher air velocity, and therefore, vapour pia fish (Kituu et al 2010), silkworm pupae (Usub et al 2010), seeded grape (Cakmak, Yildiz 2011) and jackfruit (Chowdhury et al 2011). Fig.…”

Section: Resultsmentioning

confidence: 97%

Thermal and physical properties modelling of terebinth fruit (Pistacia atlantica L.) under solar drying

Kaveh¹,

Amiri²,

Esna-Ashari³

2015

Res. Agric. Eng.

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Kaveh M., Chayjan Amiri R., Esna-Ashari M. (2015): Thermal and physical properties modelling of terebinth fruit (Pistacia atlantica L.) under solar drying. Res. Agr. Eng., 61: 150-161.A laboratory solar dryer was used to study terebinth fruit drying. Two solar collectors were adjusted in east-west directions with the angle of 45°. Initial moisture content of terebinth fruit was dried under natural and forced airflow. In order to predict terebinth moisture content during drying process five mathematical models were used. Colour change and shrinkage of the terebinth samples were calculated. Results showed that the Page model had the best performance in moisture content prediction of terebinth samples. Effective moisture diffusivity of terebinth fruit was increased under forced convection. The lowest colour change and shrinkage of the samples in natural air flow condition were observed. Maximum rupture force and energy values were obtained at maximum airflow velocity. Models were fitted to the experimental data of physical, thermal and mechanical properties of terebinth fruit with high correlation coefficients.Keywords: thin layer; moisture diffusivity; shrinkage; colour; rupture energy Drying is a complex process including simultaneous heat and mass transfer and it can result in significant changes in physical, thermal, and mechanical properties of agricultural and food materials (Koc et al. 2008). These phenomena contribute to moisture removal leading to substantial reduction in mass and volume of product, minimizing packaging, storage and transportation costs (Vega-Galvez et al. 2010). Drying kinetics of material requires simple representations to predict drying behaviour and to optimize drying parameters. Thin layer drying equations have therefore been used to predict drying time and to generalize drying curves (Arumuganathan et al. 2009).Terebinth (Pistacia atlantica L.) is one of the old trees with a long life having small, round and dark green fruit with many nutritional, medicinal and industrial applications that grows in Iran. Mutica, Kurdica and Kabolica are the main terebinth cultivars that grow wild in Iran. Presence of too much moisture in fruit at harvesting time (about 116% d.b.) is a great obstacle for long term storage.Solar drying can be considered as the development of open sun drying which an efficient method of solar energy utilization (Janjai et al. 2009). Sun drying allows the preparation of a new product presenting high quality of colour with translucent appearance.

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“…In paper [9], a fixed air collector for almost all day is lightened with incident rays, which corresponds to a particular case of irradiation in the sunny afternoon. Quantitative evaluation of the effectiveness of flat mirrors at incident illumination of the receiving surface is partially shown in studies.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%