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PH—Postharvest Technology: Airflow Resistance of Green Gram

✍ Scribed by P.M. Nimkar; P.K. Chattopadhyay

Publisher
Elsevier Science
Year
2002
Tongue
English
Weight
164 KB
Volume
82
Category
Article
ISSN
1537-5110

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✦ Synopsis

Pressure drops were measured in clean green gram beds at moisture content in a range of 8Á36-16Á65% d.b. for superficial air velocities which ranged between 0Á0104 and 1Á0875 m 3 s À1 m À2 at bed depths of 0Á2 to 0Á6 m with bulk density ranging from 760 to 855 kg m À3 . The airflow resistance of green gram increased with the increase in airflow rate, bulk density, bed depth and decreased moisture content. Results indicated that 1% increase in moisture content decreased the pressure drop by 2Á43% whereas, 1% increase in bulk density increased the pressure drop by 6Á6%. Modified Shedd's equation, Hukill and Ives equation and modified Ergun equation all with two parameters were examined. Airflow resistance was accurately described by modified Shedd's equation and an empirical equation, composed of airflow rate, moisture content and bulk density. # 2002

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