MODELING and EXPERIMENTAL STUDY ON DRYING of APPLE SLICES IN A CONVECTIVE CYCLONE DRYER

Akpınar, Ebru Kavak; Bíçer, Yaşar; Midilli, Adnan

doi:10.1111/j.1745-4530.2003.tb00654.x

Cited by 123 publications

(79 citation statements)

References 23 publications

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“…-10 ve 20.60 x10 -10 m 2 /s aralığında olduğu rapor edilmiştir [14]. Bu çalışmada yeni bir ısıtma kaynağı tasarımına sahip olan ve durağan hava ortamında kurutma işlemi uygulayan KFKK sisteminde de elma dilimlerinin kurutulması sırasında, hava akımlı konvektif kurutuculardakine benzer efektif difüzivite değerlerinin bulunması dikkati çekmektedir.…”

Section: Bulgular Ve Tartişma Kuruma Süresiunclassified

Karbon Fiber Destekli Kabin Kurutucuda Farklı Sıcaklıklarda Elma Dilimlerinin Kurutulmasının İncelenmesi: Kurutma Karakteristikleri ve Performans Değerlendirmesi

Göztok¹,

İçıer²

2017

Akademik Gıda

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Investigation of Drying of Apple Slices in Carbon Fiber Assisted Cabin Dryer at DifferentTemperatures: Drying Characteristics and Performance Evaluation ABSTRACT Drying behaviour of apple slices in carbon fiber assisted cabin dryer (CFACD) was investigated, and performance evaluation of the process was conducted. The compatibilities of fourteen different thin layer drying models to the experimental data were examined. The highest corrected coefficient of determination, the lowest reduced chi-square and the lowest root mean square error were chosen as the model compatibility criterion. "Diffusion approach" model was determined as best model describing the drying behavior. Effective diffusion coefficient (Deff) was found between 2.06x10 -10 and 4.56x10 -10 m 2 /s. For the temperature between 60-80°C, energy efficiency was in the range of 10.51-13.12% while exergy efficiency values were between 9.44-11.64%. The specific moisture removal rate of apple slices in KFKK was found as 4.44*10 -5 ±0.00, 4.85*10 -5 ±0.00, 5.63*10 -5 ±0.00 kg removed water/kJ for the drying temperatures of 60, 70 and 80°C, respectively.

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Section: Bulgular Ve Tartişma Kuruma Süresiunclassified

Karbon Fiber Destekli Kabin Kurutucuda Farklı Sıcaklıklarda Elma Dilimlerinin Kurutulmasının İncelenmesi: Kurutma Karakteristikleri ve Performans Değerlendirmesi

Göztok¹,

İçıer²

2017

Akademik Gıda

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“…Errors and uncertainties in the experiments can arise from the instrument selection, condition, calibration, environment, observation and reading, and test planning. [37] An uncertainty analysis was performed using the method described by Holman:…”

Section: Experimental Uncertaintymentioning

confidence: 99%

A Comparative Study on Exergetic Performance Assessment for Drying of Broccoli Florets in Three Different Drying Systems

et al. 2010

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This article deals with the exergy analysis and evaluation of broccoli in three different drying systems. The effects of drying air temperature on the exergy destruction, exergy efficiency, and exergetic improvement potential of the drying process were investigated. The exergy destruction rate for the drying chamber increased with the rise in the drying air temperature at 1.5 m/s, both in the tray and the heat pump dryer. The highest exergy efficiency value was obtained as 90.86% in the fluid bed dryer in comparison to the other two drying systems and the improvement potential rate was the highest in the heat pump dryer during drying of broccoli at the drying air temperature of 45 C and the drying air velocity of 1.0 m/s.

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“…However, the models of Thompson (4), Page (5), Midilli (7), Henderson and Pabis (9) and Two Terms (12) showed the lowest chi-square values (Table 5). The lower the chi-square values, the better the fit of the model (Akpinar et al, 2003;Midilli & Kucuk, 2003;Günhan et al, 2005).…”

Section: Model Designation Modelmentioning

confidence: 99%

Drying kinetics of jatropha seeds

Siqueira¹,

Resende

Chaves³

2012

Rev. Ceres

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RESUMO Cinética de secagem dos grãos de pinhão-mansoDiante da necessidade de desenvolvimento de equipamentos para a cultura do pinhão-manso, objetivou-se com este trabalho ajustar diferentes modelos matemáticos aos dados experimentais da secagem dos grãos de pinhão-manso, submetidos a diferentes condições de secagem, e selecionar aquele que melhor representa o fenômeno. O experimento foi desenvolvido no Instituto Federal Goiano -Campus Rio Verde. Os grãos, com teor de água inicial de 0,50 (kg de água/kg de matéria seca), aproximadamente, foram submetidos à secagem em estufa, com circulação forçada de ar, nas temperaturas de 45, 60, 75, 90 e 105 °C, até atingirem o teor de água de 0,10 ± 0,005 (kg de água/kg de matéria seca). Aos dados experimentais, foram ajustados 11 modelos matemáticos utilizados para representação da secagem de produtos agrícolas. Os modelos foram analisados por meio do coeficiente de determinação, do qui-quadrado, do erro médio relativo, do erro médio estimado e da distribuição de resíduos. Conclui-se que o aumento da temperatura do ar promove redução no tempo de secagem dos grãos e que os modelos de Midilli e Dois Termos são adequados para a representação do fenômeno da secagem dos grãos de pinhão-manso, e que, dentre estes, recomenda-se o modelo de Midilli para a descrição do fenômeno, por sua maior simplicidade.Palavras-chave: secagem, modelagem matemática, Jatropha curcas L., temperatura, teor de água. Given the necessity of developing jatropha cultivation equipment, this work adjusted different mathematical models to experimental data obtained from the drying of jatropha seeds submitted to different drying conditions and selected the best model to describe the drying process. The experiment was carried out at the Federal Institute of Goiás -Rio Verde Campus. Seeds with initial moisture content of approximately 0.50 (kg water/kg dry matter) were dried in a forced air-ventilated oven, at temperatures of 45, 60, 75, 90 and 105°C to moisture content of 0.10 ± 0.005 (kg water/kg dry matter). The experimental data were adjusted to 11 mathematical models to represent the drying process of agricultural products. The models were compared using the coefficient of determination, chi-square test, relative mean error, estimated mean error and residual distribution. It was found that the increase in the air temperature caused a reduction in the drying time of seeds. The models Midilli and Two Terms were suitable to represent the drying process of Jatropha seeds and between them the use of the Midili model is recommended due to its greater simplicity.

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MODELING and EXPERIMENTAL STUDY ON DRYING of APPLE SLICES IN A CONVECTIVE CYCLONE DRYER

Cited by 123 publications

References 23 publications

Karbon Fiber Destekli Kabin Kurutucuda Farklı Sıcaklıklarda Elma Dilimlerinin Kurutulmasının İncelenmesi: Kurutma Karakteristikleri ve Performans Değerlendirmesi

Karbon Fiber Destekli Kabin Kurutucuda Farklı Sıcaklıklarda Elma Dilimlerinin Kurutulmasının İncelenmesi: Kurutma Karakteristikleri ve Performans Değerlendirmesi

A Comparative Study on Exergetic Performance Assessment for Drying of Broccoli Florets in Three Different Drying Systems

Drying kinetics of jatropha seeds

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