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Potato slab dehydration by air ions from corona discharge (1991)

Chen, Y. H. ; Barthakur, N. N.

Springer

International journal of biometeorology 35 (1991), S. 67-70

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ISSN: 1432-1254

Keywords: Air ions ; Corona current ; Radiogauge ; Potato drying

Source: Springer Online Journal Archives 1860-2000

Topics: Geography , Physics

Notes: Abstract Space charge (air ions) produced by single corona electrodes was used to enhance drying rates from fresh slabs of potato. The drying path was traced by a beta-ray gauge which provided both sensitivity and reproducibility to the measurements of drying time. The rate of evaporation was increased 2.2 to 3.0 times when subjected to fluxes of 3.02×1012 positive ions alone or in combination with 7.31×1012 negative air ions/cm2 per s compared to that from an air-drying control slab. Electric wind caused by an ionic drag force seems to be the principal driving force for the observed enhancement in drying rates.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF01087479

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