Experimental investigation of forced convection and desiccant integrated solar dryer |
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| Authors: | V Shanmugam E Natarajan |
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| Affiliation: | aDepartment of Mechanical Engineering, Sathyabama Deemed University, Chennai 600 119, India;bInstitute for Energy Studies, College of Engineering, Anna University, Chennai 600 025, India |
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| Abstract: | An indirect forced convection and desiccant integrated solar dryer is designed and fabricated to investigate its performance under the hot and humid climatic conditions of Chennai, India. The system consists of a flat plate solar air collector, drying chamber and a desiccant unit. The desiccant unit is designed to hold 75 kg of CaCl2-based solid desiccant consisting of 60% bentonite, 10% calcium chloride, 20% vermiculite and 10% cement. Drying experiments have been performed for green peas at different air flow rate. The equilibrium moisture content Me is reached in 14 h at an air flow rate of 0.03 kg/m2 s. The system pickup efficiency, specific moisture extraction rate, dimensionless mass loss, mass shrinkage ratio and drying rate are discussed in this paper. |
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| Keywords: | Solar drying Desiccant Green peas Moisture content Pickup efficiency |
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