Design and Development of Solar Multi-Crop Dryer


Author (s):

  1. Ashwin B. Virupakshar, B. V. Bhoomaraddi College of Engineering & Technology, Hubballi
  2. Jangali Satish G, B V B College of Engineering & Technology, Hubli, jangalisatish@gmail.com
  3. Madhusudhana H. K., B. V. Bhoomaraddi College of Engineering & Technology, Hubballi
  4. Manjunath Tamate, B. V. Bhoomaraddi College of Engineering & Technology, Hubballi

Abstract:

As drying is one of the accomplished methods to preserve food, the solar food/crop dryers are convenient drying methods for a feasible world. In this study, a forced convection solar crop dryer is designed and constructed to dry different crops. This paper explains the design calculations for the collector, different alternatives for the collector fins and Computational Fluid Dynamics (CFD) analysis of the collector fins for the performance of the different alternatives. From the study, the area required to dry 100kg of crop is 10m2; however, it also depends upon the drying time and the moisture content in the crop. Based on the CFD results among all alternatives, chamfered rib fin was selected as the best alternative. By using the calculation and the simulation results the collector is constructed and tested with different conditions. The closed drying is faster compared to the open sun drying. Around 50% of the drying time can be reduced by using the crop dryer. Because of the closed and the controlled rate of drying the quality of the crops remains same in terms of colour, texture and taste.

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