Investigation of Drying of Apple Slices in Carbon Fiber Assisted Cabin Dryer at Different Temperatures: Drying Characteristics and Performance Evaluation

Year 2017, , 355 - 367, 24.12.2017

Serpil Pekdoğan Göztok Filiz İçier

https://doi.org/10.24323/akademik-gida.370103

Cited By: 5

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.
Both "Two term " and "Lewis" models for 60°C and "Diffusion approach" model for 70 and 80°C
was determined as best models describing the drying behavior. Effective diffusion
coefficient (D_eff) was found between 2.06x10^-10 and 4.56x10^-10 m²/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.

Keywords

Carbon fiber, Drying, Apple, Energy-exergy

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

Abstract

Elma dilimlerinin karbon fiber destekli kabin kurutucuda (KFKK) 60, 70
ve 80°C’de kuruma davranışı incelenmiş ve işlemin performans değerlendirmesi
yapılmıştır. On dört farklı ince tabaka kuruma modelinin deneysel verilere
uyumluluğu istatistiksel olarak incelenmiştir. Model uyumluluğu kriteri olarak
en yüksek düzeltilmiş belirleme katsayısı, en düşük indirgenmiş ki-kare ve en
düşük hata kareleri ortalamasının karekökü seçilmiştir. “İki terimli” ve “Lewis”
modelleri 60°C, “difüzyon yaklaşım” modeli ise 70 ve 80°C kurutma
sıcaklıklarında kuruma davranışını en iyi ifade eden modeller olarak belirlenmiştir.
Efektif difüzyon katsayısı (D_eff) 2.06x10^-10 ve 4.56x10^-10
m²/s değerleri arasında bulunmuştur. 60-80°C kurutma sıcaklıklarında,
işlemin enerji verimliliğinin %10.51-13.12, ekserji verimliliğinin %9.44-11.64 arasında
olduğu tespit edilmiştir. Elma örneklerinin KFKK’da özgül nem kaybı hızı 60, 70
ve 80°C kurutma sıcaklıkları için sırasıyla 4.44*10^-5±0.00, 4.85*10^-5±0.00,
5.63*10^-5±0.00 kg buharlaşan su/kJ olarak belirlenmiştir.

Keywords

Karbon fiber, Kurutma, Elma, Enerji-ekserji

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