Citation

Munimathan, Arunkumar and Kumar T, Senthil and Dhairiyasamy, Ratchagaraja and Hussain, Fayaz and Alam, Mohammad Mukhtar and Rajendran, Parvathy and Lee, It Ee (2026) Design and optimization of an active and passive mode indirect solar dryer to improve energy efficiency and sustainability. International Journal of Low-Carbon Technologies, 21. ISSN 1748-1325

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Abstract

This paper compares the behavior of active (forced convection) and passive (natural convection) indirect solar dryers when it comes to drying green chilies, in terms of thermal behavior, drying kinetics and retentiveness of products. Similar climatic conditions were done so as to compare the rate of moisture removal,thermal efficiency as well as specific moisture extraction rate (SMER). The active dryer reached a high temperature in the drying chamber of 65◦C and decreased moisture content of 85% to 10% (wb) in 6 h under similar input measures as compared to the passive dryer, which took 12 h with similar input measures. The active dryer registered SMER and thermal efficiency values of 0.75 kg/kWh and 55%, respectively, compared to 0.45 kg/kWh and 35% of the passive dryer. The quality analysis revealed that the active dryer was much better in terms of colorretention and flavor stability because ofreduced exposure time and higher heattransfer. In a nutshell,the active system decreased active time by 40% and energy used per unit product, thus showing that it would be appropriate in decentralized agricultural processing with the use of solar energy

Item Type:	Article
Uncontrolled Keywords:	Solar drying, green chilies, affordable and clean energy
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK4001-4102 Applications of electric power
Divisions:	Faculty of Artificial Intelligence & Engineering (FAIE)
Depositing User:	Ms Rosnani Abd Wahab
Date Deposited:	30 Jun 2026 04:39
Last Modified:	30 Jun 2026 04:39
URII:	http://shdl.mmu.edu.my/id/eprint/16134

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