ASSESSMENT OF THE SIMPLIFIED EQUATIONS USED FOR THE DETERMINATION OF µ1 AND BIOT NUMBER IN UNIDIRECTIONAL DRYING CALCULATIONS IN SOLIDS

Year 2016, Volume: 6 Issue: 1, 7 - 18, 01.06.2016

Coskan Ilıcalı Filiz Icıer

Abstract

The accuracy of the two simplified methods; Dincer and Dost (1996) and Dincer and Hussain (2004), used for the determination of the first root of the characteristic equation and the Biot numbers from experimental lag factor data in unidirectional drying of solids has been investigated. The tabulated values relating the lag factor to the first root of the characteristic equation and Biot number were taken as basis in the assessment. None of the methods considered yielded accurate predictions for the complete lag factor range. The calculation of μ1 and Biot number from the tabulated values of lag factors has been recommended.

Keywords

Biot, mass coefficient, drying, food

KATILARDA TEK BOYUTLU KURUTMA HESAPLAMALARINDA µ1 ve BIOT SAYISININ BELİRLENMESİ İÇİN KULLANILAN BASİTLEŞTİRİLMİŞ DENKLEMLERİN DEĞERLENDİRİLMESİ

Abstract

Katıların tek boyutta kurutulmasında deneysel lag faktör verilerinden karakteristik eşitliğin birinci kökünü ve Biot sayılarının öngörülmesini belirlemek için kullanılan iki basitleştirilmiş yöntemin, Dincer and Dost (1996) ve Dincer and Hussain (2004), doğruluğu incelenmiştir. Karakteristik eşitliğin birinci kökü ve Biot sayısı ile ilgili tablolaştırılmış değerler, öngörüler için temel alınmıştır. İncelenen yöntemlerden hiçbiri tüm lag faktör aralığı için doğru öngörülerde bulunamamıştır. μ1 ve Biot sayılarının, lag faktörlerin tablolaştırılmış değerlerinden hesaplanması önerilmiştir

Keywords

Biot, kütle katsayısı, kurutma, gıda

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