Study of desorption and adsorption during grain aeration

One requirement in designing and operating and operating system is to minimize the moisture change in stored grain. Moisture transfer during the aeration process is generally believed to be caused by the partial pressure difference between water in grain and water in air (P 3 −P 4 ). A mathematical...

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Bibliographic Details
Published in:Drying technology 1995, Vol.13 (1/2), p.183-196
Main Authors: Kanujoso, B. (Kansas State University, Manhattan, KS.), Chung, D.S, Song, A, Erickson, L.E
Format: Article
Language:English
Subjects:
ADSORCION
ADSORPTION
AERATION
AGUA
AIR TEMPERATURE
AIREACION
ARROZ
CLIMA TROPICAL
CLIMAT TROPICAL
CONTENIDO DE HUMEDAD
DESORCION
DESORPTION
EAU
equilibrium model
equilibrium models
GRAIN
grain moisture content
grain temperature
GRANOS
HUMEDAD RELATIVA
humid
HUMIDITE RELATIVE
mathematical model
MATHEMATICAL MODELS
MODELE MATHEMATIQUE
MODELOS MATEMATICOS
MOISTURE
MOISTURE CONTENT
partial pressure
RELATIVE HUMIDITY
RICE
RIZ
rough rice
TEMPERATURA
TEMPERATURA DEL AIRE
TEMPERATURE
TEMPERATURE DE L'AIR
TENEUR EN EAU
TROPICAL CLIMATE
WATER
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Summary:One requirement in designing and operating and operating system is to minimize the moisture change in stored grain. Moisture transfer during the aeration process is generally believed to be caused by the partial pressure difference between water in grain and water in air (P 3 −P 4 ). A mathematical model was developed for rough rice, which predicts the partial pressure difference under various grain and ambient conditions. Observations of moisture change over 10 aeration tests confirmed the good correlation between sorption phenomena and partial pressure differences. Studies indicated that air relative humidity, air temperature, grain temperature and grain moisture are significant factors influencing the partial pressure differences and, thus, affecting
ISSN:0737-3937
1532-2300
DOI:10.1080/07373939508916948