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Influence of process variables on hot air drying assisted by power ultrasound

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dc.creator García-Pérez, José V.
dc.creator Cárcel, Juan A.
dc.creator Benedito Fort, José J.
dc.creator Riera, Enrique
dc.creator Mulet Pons, Antonio
dc.date 2008-06-25T11:21:27Z
dc.date 2008-06-25T11:21:27Z
dc.date 2007-12
dc.date.accessioned 2017-01-31T01:49:27Z
dc.date.available 2017-01-31T01:49:27Z
dc.identifier XIX Congreso Internacional de Acústica (ICA2007)
dc.identifier http://hdl.handle.net/10261/5319
dc.identifier.uri http://dspace.mediu.edu.my:8181/xmlui/handle/10261/5319
dc.description Ponencia presentada en el XIX Congreso Internacional de Acústica (ICA2007), Madrid, 2-7 Sep 2007.-- PACS: 43.35.-c.
dc.description Power ultrasound application on convective drying of foodstuffs may be considered an emergent technology. Acoustic energy may improve drying rate without significantly heating the material due to phenomena affecting mass transfer resistances. As a consequence, ultrasound application on the drying of heat sensitive materials or in process carried out at low temperatures is quite interesting.
dc.description The aim of this work was to address the influence of the main processing variables on the convective drying assisted by power ultrasound (21.7 kHz) of different foodstuffs. The influence of air velocity and temperature, raw material characteristics, mass load density and ultrasonic power applied was addressed.
dc.description From the experimental results, a significant influence of the application of power ultrasound on both external and internal resistance to mass transfer has been found. Nevertheless, the ultrasonic effects depended strongly on the experimental conditions used. In the case of carrot drying at different temperatures, the application of power ultrasound increased the effective moisture diffusivity by 55% at experiments carried out at 30ºC, however the improvement was non significant at experiments conducted at 70ºC.
dc.description Peer reviewed
dc.format 197041 bytes
dc.format application/pdf
dc.language eng
dc.publisher Sociedad Española de Acústica
dc.relation ICA2007
dc.relation ULT-09-005-IP
dc.rights openAccess
dc.subject New Power Ultrasonic Processes
dc.subject Hot air convective drying
dc.subject Foodstuffs
dc.subject Mass transfer resistances
dc.title Influence of process variables on hot air drying assisted by power ultrasound
dc.type Comunicación de congreso


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