IJIMCE : International Journal of Innovation in Mechanical Construction and Energy
Vol. 1 No. 2 (2024): IJIMCE : International Journal of Innovation in Mechanical Construction and Ene

Study on the Energy and Exergy of a Biomass-Assisted Recirculating Mixed-Flow Dryer Utilized for Drying Paddy

Muhammad Yahya (Departemen of Mechanical Engineering, Institut Teknologi Padang, INDONESIA)
Dedi Wardianto (Departemen of Mechanical Engineering, Institut Teknologi Padang, INDONESIA)



Article Info

Publish Date
30 Jun 2024

Abstract

The performance of a biomass-assisted recirculating mixed-flow dryer for drying paddy (Oryza sativa L.) was thoroughly assessed. The dryer system comprises a biomass furnace, drying column, vibratory feeder, bucket elevator, and blower. In the experimental setup, the drying time required to reduce the moisture content of paddy from 20.90% (wet basis) to 13.30% (wet basis) was measured at 4.5 hours. During this period, the average air temperature was recorded at 78.15 °C, accompanied by an average relative humidity of 8.55%. The observed drying rate ranged from 1.688 to 18.126 kg/h, with an average value of 7.792 kg/h. Further analysis revealed that the specific moisture evaporation rate (SMER) and specific energy consumption (SEC) varied between 0.122 and 1.308 kg/kWh, and 0.806 and 8.657 kWh/kg, respectively. The corresponding average values were 0.562 kg/kWh for SMER and 4.119 kWh/kg for SEC. The thermal efficiency of the dryer, along with exergy efficiency, demonstrated a range of 7.82% to 83.99% and 15.28% to 25.64%, respectively. The average values for thermal efficiency and exergy efficiency were calculated as 36.11% and 19.46%. Meanwhile, the efficiency of the biomass furnace ranged from 70.63% to 87.70%, with an overall average efficiency of 79.53%.

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Journal Info

Abbrev

ijimce

Publisher

Subject

Automotive Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology

Description

The journal scopes include (but not limited to) the followings: Innovations in Mechanical Energy Systems : Advanced technologies in energy conversion and power generation, Renewable energy sources and their integration into mechanical systems, Energy-efficient design and optimization in mechanical ...