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Solar Drying Lab

Faculty-In-Charge

Lab Overview

Preservation of agricultural and marine produce is one of the major problem faced by developing countries. Additionally, as time passes, these issues will become worse due to the countries' expanding populations' increasing dietary needs. The issue can be addressed by drying the items, which will also significantly improve the population's supply and income conditions. Drying is a most important process of removing moisture content from the agricultural and marine products. Since solar energy is abundant and free, adopting solar drying technology can be the best solution for drying agricultural and marine products in which the moisture content of products is reduced, assisting in their long-term preservation. The present invention relates to an energy efficient mixed mode forced convection solar dryer for drying foods, agricultural products like vegetables and, fruits, seafood, edibles or organic foods etc. The experimental setup consists of following components:

  • Double pass solar air heater with V- grooved absorber plate
  • Drying chamber with perforated trays and covered with polythene sheet
  • Blower for air circulation
  • 1.2 kVA Solar off gird combo for electricity generation

Key Research Areas

  • Design, development and performance evaluation of a Mixed-mode Forced Convection Solar Dryer
  • Optimization of drying parameters (temperature, airflow, humidity, etc.)
  • Drying kinetics and Mathematical modeling of the drying process
  • Impact of drying on product quality (nutritional, texture, color, etc.)
  • Scalability and commercial viability – assessing the feasibility of large-scale operations and market potential

Significant Facilities & Special Features

  • Environmental parameters such as Solar radiation data, ambient temperature, ambient humidity, wind speed measuring facility with data acquisition system

Major Equipment

Research Funding & Grants

  • Funded by: BITS
  • Total Investment:  Approximate 26 Lakhs

Achievements

Publications:

  • Preparation and characterization of CuO nanoparticles dopped paraffin wax composite for solar thermal energy storage in the solar drying application, Bhanudas B.Takale, Ranjit S. Patil, 9th International Conference on Advances in Energy Research (ICAER) at IIT Bombay from 12th to 14th December 2023, Advances in Clean Energy and Sustainability, Volume 2, DOI : 10.1007/978-981-97-5419-9.
  • The Effect of Varying the Air Flow Velocity in a Solar Air Heater on Dryer Performance Under No Load Conditions, Bhanudas B.Takale, Ranjit S. Patil, Global Research Conference On Renewable Energy & Sustainable Development, Munich, Germany September 23-25, 2024.

Patents: A design registration has been granted by the Indian Patent Office.

  • Title: Solar Dryer Integrated with Thermal Energy Storage for Agricultural and Marine Products Drying.
    • Grant of Design No: 416367-001 dated 09/05/2024
    • Inventors: Ranjit S. Patil and Bhanudas Baijappa Takale

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