Analysis of mass transfer in air-drying of foods

Vagenas, GK; Marinos-Kouris, D; Saravacos, GD

dc.contributor.author	Vagenas, GK	en
dc.contributor.author	Marinos-Kouris, D	en
dc.contributor.author	Saravacos, GD	en
dc.date.accessioned	2014-03-01T01:07:47Z
dc.date.available	2014-03-01T01:07:47Z
dc.date.issued	1990	en
dc.identifier.issn	0737-3937	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/10175
dc.subject	Mass Transfer	en
dc.subject.classification	Engineering, Chemical	en
dc.subject.classification	Engineering, Mechanical	en
dc.subject.other	Heat Transfer--Convection	en
dc.subject.other	Mass Transfer	en
dc.subject.other	Mathematical Models	en
dc.subject.other	Moisture--Diffusion	en
dc.subject.other	Convective Drying of Foods	en
dc.subject.other	Grapes	en
dc.subject.other	Modeling	en
dc.subject.other	Raisins	en
dc.subject.other	Shrinkage	en
dc.subject.other	Food Products	en
dc.title	Analysis of mass transfer in air-drying of foods	en
heal.type	journalArticle	en
heal.identifier.primary	10.1080/07373939008959886	en
heal.identifier.secondary	http://dx.doi.org/10.1080/07373939008959886	en
heal.language	English	en
heal.publicationDate	1990	en
heal.abstract	A theoretical model for the convective drying of food materials was developed. These materials shrink considerably, as moisture content decreases; for this reason, the proposed model takes shrinkage into account as a fundamental part of the drying operation. This is accomplished by modeling the movement of dry solids and the consequent movement of bound substance during drying. The resulting system of three non-linear partial differential equations is solved numerically and the predicted values of moisture content and temperature are compared with experimental data for the drying of Sultana grapes. The effective moisture diffusivity in the mass of grapes was described by an Arrhenius-type equation. A sensitivity analysis showed that the activation energy for mass transfer was estimated with a high degree of precision. The agreement between the calculated results and the experimental measurements, using various criteria, was very satisfactory.	en
heal.publisher	MARCEL DEKKER INC	en
heal.journalName	Drying Technology	en
dc.identifier.doi	10.1080/07373939008959886	en
dc.identifier.isi	ISI:A1990DP53300005	en
dc.identifier.volume	8	en
dc.identifier.issue	2	en
dc.identifier.spage	323	en
dc.identifier.epage	342	en