IMPROVEMENT OF FUME CAPTURE EFFICIENCY OF SIDE SUCTION HOOD WITH PARALLEL-FLOW SUPPLY AIR

XIE Chun-bo; QUAN Meng-fan; CAO Zhi-xiang; WANG Yi; SUN Jian-xin; WANG Xu

doi:10.13205/j.hjgc.202110014

Volume 39 Issue 10

Jan. 2022

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2021 > 39(10): 101-109

XIE Chun-bo, QUAN Meng-fan, CAO Zhi-xiang, WANG Yi, SUN Jian-xin, WANG Xu. IMPROVEMENT OF FUME CAPTURE EFFICIENCY OF SIDE SUCTION HOOD WITH PARALLEL-FLOW SUPPLY AIR[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(10): 101-109. doi: 10.13205/j.hjgc.202110014

Citation:

XIE Chun-bo, QUAN Meng-fan, CAO Zhi-xiang, WANG Yi, SUN Jian-xin, WANG Xu. IMPROVEMENT OF FUME CAPTURE EFFICIENCY OF SIDE SUCTION HOOD WITH PARALLEL-FLOW SUPPLY AIR[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(10): 101-109. doi: 10.13205/j.hjgc.202110014

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IMPROVEMENT OF FUME CAPTURE EFFICIENCY OF SIDE SUCTION HOOD WITH PARALLEL-FLOW SUPPLY AIR

doi: 10.13205/j.hjgc.202110014

1. School of Building Services Science and Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China;
2. State Key Laboratory of Green Building in Western China, Xi'an University of Architecture and Technology, Xi'an 710055, China;
3. China ENFI Engineering Co., Ltd, Beijing 100038, China;
4. Refined Lead and Rare Precious Plant of Hunan Shuikoushan Nonferrous Metals Group Co., Ltd, Hengyang 421513, China

Received Date: 2020-11-02
Available Online: 2022-01-26

Abstract

Abstract

In practical engineering, because the exhaust hood was directly connected with the dust removal system, the size and flow of the exhaust hood were not easy to change once determined. When the actual exhaust air volume was much smaller than the exhaust air volume designed by the design method, it was difficult to obtain the optimal design parameters by using the traditional design method. Therefore, reasonable design of the size and flow of air supply outlet under the determined the form and flow of exhaust hood have strong practical significance. In this paper, numerical simulation was used to compare the flow field and the capture of pollutants under different forms of side suction exhaust hood and supply air device. On this basis, the air supply inlet were added, and the capture characteristics of different air supply flow rate on the pollutants were compared under the the constant exhaust flow. In addition, the effects of different air supply terminal devices on the capture of pollutants were studied. The results showed that movable exhaust hood and rotating open and closed exhaust hood could effectively improve the capture efficiency of pollutants. On this basis, the capture efficiency of pollutant could be improved by using air supply inlet, compared with using the exhaust hood alone. It was found that when the exhaust flow of the exhaust hood in the actual project was determined, the ratio of the exhaust flow should be adjusted on the premise that the supply air flow could effectively transport pollutants to the exhaust outlet. Finally, it was found that using parallel flow air supply device could improve the uniformity of air supply, improve the capture efficiency of exhaust hood. The results of the present study could provide certain guidance for the transformation and design of the push pull ventilation device in practical engineering.
- parallel flow inlet,
- exhaust hood,
- capture efficiency,
- push pull ventilation,
- high-temperature flue gas,
- flow rate ratio

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References(20)

References

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