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A novel active-mode indirect solar dryer for agricultural products: Experimental evaluation and economic feasibility

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  • Singh, Sukhmeet
  • Gill, R.S.
  • Hans, V.S.
  • Singh, Manpreet

Abstract

This article presents a novel active-mode indirect solar dryer consisting of highly efficiency through-flow evacuated tube collector for air heating. A DC fan powered with solar photovoltaic (PV) module is provided for forced air flow through this dryer. The dehydration chamber is of tray type with loading capacity of 6 kg–45 kg depending on the drying product. The dryer was evaluated to dry fenugreek leaves (Trigonella foenum-graecum) and turmeric (Curcuma longa) in semi-continuous mode; and respective overall thermal efficiency was found to be 34.1% and 23.6%. The respective thermal efficiency in open sun drying (OSD) was 5.7% and 5.4%. The quality of dried fenugreek leaves and turmeric was found better than OSD. Economics of the solar dryer indicate the capital cost is negligible in comparison to cumulative present worth of life cycle savings. The values are 211,262 INR (1 US$ = 74.57 INR) and 229,152 INR respectively for fenugreek leaves and turmeric; and capital cost of the dryer is only 50,000 INR. The low value of payback period also confirms economic viability of this dryer. The generalized economic curves have also been plotted.

Suggested Citation

  • Singh, Sukhmeet & Gill, R.S. & Hans, V.S. & Singh, Manpreet, 2021. "A novel active-mode indirect solar dryer for agricultural products: Experimental evaluation and economic feasibility," Energy, Elsevier, vol. 222(C).
    • Handle: RePEc:eee:energy:v:222:y:2021:i:c:s036054422100205x
    DOI: 10.1016/j.energy.2021.119956
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    Cited by:

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    5. Nikpey, Amir Hossein & Hajizadeh Aghdam, Abolfazl & Hamoud Shaltouki, Sadegh, 2024. "Dynamic simulation and thermoeconomic analysis of a novel indirect hybrid solar dryer," Renewable Energy, Elsevier, vol. 227(C).
    6. EL-Mesery, Hany S. & EL-Seesy, Ahmed I. & Hu, Zicheng & Li, Yang, 2022. "Recent developments in solar drying technology of food and agricultural products: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 157(C).
    7. Madhankumar, S. & Viswanathan, Karthickeyan, 2022. "Computational and experimental study of a novel corrugated-type absorber plate solar collector with thermal energy storage moisture removal device," Applied Energy, Elsevier, vol. 324(C).
    8. Mathew, Adarsh Abi & Thangavel, Venugopal, 2021. "A novel thermal energy storage integrated evacuated tube heat pipe solar dryer for agricultural products: Performance and economic evaluation," Renewable Energy, Elsevier, vol. 179(C), pages 1674-1693.
    9. Rani, Poonam & Tripathy, P.P., 2023. "CFD coupled heat and mass transfer simulation of pineapple drying process using mixed-mode solar dryers integrated with flat plate and finned collector," Renewable Energy, Elsevier, vol. 217(C).
    10. Singh, Sukhmeet & Gill, R.S. & Hans, V.S. & Mittal, T.C., 2022. "Experimental performance and economic viability of evacuated tube solar collector assisted greenhouse dryer for sustainable development," Energy, Elsevier, vol. 241(C).
    11. Saini, Raj Kumar & Saini, Devender Kumar & Gupta, Rajeev & Verma, Piush & Thakur, Robin & Kumar, Sushil & wassouf, Ali, 2023. "Technological development in solar dryers from 2016 to 2021-A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 188(C).

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