Parametric analysis of a rotating disk for cooking oil fume particle removal

Autor: Lianjie He, Changsheng Cao, Lipeng Lv, Qigao Gai, Wuhao Xie, Jun Gao, Yuhang Wu, Lingjie Zeng, Yongzhe Meng
Rok vydání: 2021
Předmět:
Zdroj: Building and Environment. 204:108121
ISSN: 0360-1323
DOI: 10.1016/j.buildenv.2021.108121
Popis: A rotating disk with spokes was developed recently for its benefits in preventing grease accumulation. Parametric design of disk structure based on the particle capture efficiency and flow resistance has not been widely studied. This work performed experiments and computational fluid dynamic (CFD) simulations to analyze factors influencing the performance of this rotating disk. The experimental and simulation results of the pressure drop and particle capture efficiency were compared to validate the feasibility of CFD simulations and identify the best turbulence model among the three tested. Orthogonal tests performed for parametric analysis showed that spoke width, number of spokes, disk diameter, rotating speed, and air flow rate significantly affect the resistance of the rotating disk, whereas spoke width, spoke thickness, number of spokes, rotating speed, and air flow rate significantly affect particle capture efficiency. Structure improvement of the rotating disk was conducted to balance the particle capture efficiency and flow resistance. Finally, structure-improved disks manufactured by corrosion were evaluated in an experimental system with an artificial cooking oil fume (COF) particle generating apparatus. Experimental results show that the total particle removal efficiency of COF particles can reach up to 62.5% for a rotating disk with optimized structure under rotating speed 1500 rpm and penetrating airflow rate 360 m³/h, while the measured pressure drop is as low as 15.3 Pa. This study can contribute to the efficient design of rotating disk used for purification of COF in residential kitchen or oil-coated particles in industrial environment.
Databáze: OpenAIRE
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