Exergetic, Energetic, and Quality Performance Evaluation of Paddy Drying in a Novel Industrial Multi-Field Synergistic Dryer

Bin Li, Changyou Li, Tao Li, Zhiheng Zeng, Wenyan Ou and Chengjie Li
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Bin Li: College of Engineering, South China Agricultural University, Guangzhou 510642, China
Changyou Li: College of Engineering, South China Agricultural University, Guangzhou 510642, China
Tao Li: College of Engineering, South China Agricultural University, Guangzhou 510642, China
Zhiheng Zeng: College of Engineering, South China Agricultural University, Guangzhou 510642, China
Wenyan Ou: College of Engineering, South China Agricultural University, Guangzhou 510642, China
Chengjie Li: College of Engineering, South China Agricultural University, Guangzhou 510642, China

Energies, 2019, vol. 12, issue 23, 1-19

Abstract: The present work proposes a novel industrial multi-field synergistic dryer with a drying capacity of 3.45 t/h. The energy, exergy, and quality aspects of the drying process were studied. An energy–exergy methodology was employed to estimate the energetic and exergetic performance, heat loss characteristics and heat recovery behavior of the dryer. Additionally, the quality of the dried paddy seeds was evaluated by its crackle ratio, generation potential, and generation rate. The results showed that the overall energy and exergy efficiency ranged from 13.26% to 56.63% and 39.03% to 60.23%, respectively. The improvement potential rates of the whole system varied from the lowest 8.49 kW to the highest 15.83 kW and respectively accounted for 15.81–29.48% of the total exergy input, indicating that the performance of the dryer is acceptable. The total recovered radiant energy and radiant exergy recover rate were respectively ascertained to be 237.64 MJ and 0.26 kW. As for the quality aspect, the generation potential and generation rate of the dried paddy seeds respectively ranged from 75% to 90% and 69% to 88% while the crackle ratio of the paddy seeds was 1%, which indicated that the quality performance of the dried seed is of economic viability.

Keywords: exergy; energy; drying; paddy; industrial; quality (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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