Experimental investigation and mathematıcal modeling of swirling flow fluidized bed infrared drying behavior of hazelnut

Abstract

In this study, swirling flow fluidized bed infrared drying behavior of shelled hazelnuts was experimentally investigated, and mathematical modeling was performed. Drying experiments were carried out at 250 W, 500 W, 750 W and 1000 W infrared power values for 100 g shelled hazelnut, and mass losses were measured depending on drying time. Drying characteristics such as dimensionless mass ratio, moisture content and drying rate were calculated based on time and mass loss. Mathematical modeling was performed to determine the thin layer drying behavior of shelled hazelnuts in swirling flow fluidized bed infrared dryer by using 24 thin layer drying equations in the literature. 7 different evaluation criteria were used to determine the best model. As a result, the best drying models were found to be Alibaş, and Balbay and Şahin for 250 W and 500 W, respectively, and Improved Midilli-Kucuk for 750 W and 1000 W. In addition, considering the drying time, it was found that the most appropriate infrared power value was 1000 W for drying of shelled hazelnut in swirling flow fluidized bed infrared drying method.

Keywords

• Shelled hazelnut
• infrared drying
• fluidized bed drying
• swirling flow drying
• mathematical modeling

Fındığın dönmeli akışlı akışkan yataklı kızılötesi ışınımlı kurutma davranışının deneysel incelenmesi ve matematiksel modellenmesi

Abstract

Bu çalışmada, kabuklu fındıkların dönmeli akışlı akışkan yataklı kızılötesi ışınımlı kurutma davranışı deneysel olarak araştırılmış ve matematiksel modellemesi gerçekleştirilmiştir. Deneysel çalışmalar, 100 g kabuklu fındık için 250 W, 500 W, 750 W ve 1000 W kızılötesi ışınım güç değerlerinde yapılmış ve zamana bağlı olarak kütle kayıpları ölçülmüştür. Boyutsuz kütle oranı, nem içeriği ve kurutma hızı gibi kurutma karakteristikleri zamana ve kütle kaybına bağlı olarak hesaplanmıştır. Kabuklu fındıkların, dönmeli akışlı akışkan yataklı kızılötesi kurutucudaki kurutma eğri denklemini belirlemek için literatürde sunulan 24 adet ince tabaka kurutma denklemi dikkate alınmıştır. En iyi modeli belirlemek için 7 farklı model uygunluk parametresi kullanılmıştır. Sonuç olarak, en iyi kurutma modelleri 250 W ve 500 W için sırasıyla Alibaş; Balbay ve Şahin; 750 W ve 1000 W için ise Geliştirilmiş Midilli-Kucuk olarak tespit edilmiştir. Ayrıca, kurutma zamanı dikkate alınarak, kabuklu fındığın kurutulması için dönmeli akışlı akışkan yataklı kızılötesi ışınımlı kurutma yönteminde ideal kızılötesi ışınım güç değerlerinin 1000 W olduğu tespit edilmiştir.

Keywords

• Kabuklu fındık
• kızılötesi ışınımlı kurutma
• akışkan yataklı kurutma
• dönmeli akışlı kurutma
• matematiksel modelleme

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