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Abstract
The specific objectives of the present study can be summerized as follows :
1-To study the feasability of using the plastic solar greenhouse (span form) as a simple solar collector for heating the drying air.
2-To experimentally determine the resistance to airflow in acommon variety of wheat (Sakha 61) as affected by the following variables : grain moisture ; content ; grain bulk density ; air flow rate and the entering air characteristics.
3-To distinguish between the behivor of natural and and solar -heated air in removing moisture from wheat grains during daytime periods.
4-To devalop empricial equations , in which, describing the relationship between the pressure DROP of drying air and the experimental variables.