Paper Information

Title: 

INFLUENCE OF DIFFERENT VACUUM CONDITIONS ON THE RICE GRAIN BREAKAGE IN A THIN LAYER DRYER

Type: PAPER
Author(s): ESHTAVAD RAHMATOLLAH,KALANTARI DAVOOD
 
 
 
Name of Seminar: NATIONAL VACUUM CONFERENCE IRAN
Type of Seminar:  CONFERENCE
Sponsor:  PAZHOHESHKADE OLOM VA SANAYE GHAZAEE
Date:  2012Volume 5
 
 
Abstract: 

MOST LOSSES OF THE PADDY OCCURRED IN DRYING AND MILLING PROCESS THAT CAN BE REDUCED BY OPTIMIZING THE DRYING PROCESS. IN THIS STUDY, PADDIES HAVE BEEN TRANSFERRED TO A VACUUM CHAMBER AFTER EVERY DRYING STEP. DURING THE RELAXATION PERIOD IN THE VACUUM CHAMBER, HEAT TRANSFER WITHIN THE RICE GRAIN OCCURS SLOWLY FOR MINIMIZING THE THERMAL AND MOISTURE STRESSES. BASED ON THE RESULTS OBTAINED IN THIS STUDY, A REDUCED PRESSURE DURING THE RELAXATION STAGE SIGNIFICANTLY INFLUENCES THE RICE GRAIN BREAKAGE. THE OPTIMIZED COMBINATION OF TIME, TEMPERATURE AND PRESSURE FOR THE NEMAT RICE VARIETY OBTAINED 5 HR, 60OC AND 0.6 ATM, RESPECTIVELY.

 
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