Guishan He
Research Subjects
Research Interests
Guishan He has a total of 10 co-authors. Here are the top co-authors by number of shared publications:
- Bin Yang
China Academy of Safety Science and Technology, Beijing 100012, China
1 shared publication - Fabin Zeng
School of Resources and Safety Engineering, University of Science and Technology Beijing, Beijing 100083, China
1 shared publication - Guoliang Zhang
China Academy of Safety Science and Technology, Beijing 100012, China
1 shared publication - Jianlong Li
School of Resources and Environmental Engineering, Nanchang University, Nanchang 330031, China
1 shared publication - Jianwu Chen
School of Resources and Safety Engineering, University of Science and Technology Beijing, Beijing 100083, China
1 shared publication - Jingge Xu
China Academy of Safety Science and Technology, Beijing 100012, China
1 shared publication
Latest Publications
- Open Access
- 28 August 2026
- Published by MDPI AG in Atmosphere
- Vol. 17 (9) , 843
Optimization of Ventilation Systems in Large Welding Workshops with Multiple Dust Sources: A Case Study of a 300-m-Long Welding Workshop
Welding technology, extensively utilized in modern industry, poses significant health risks due to metal dust exposure, which can lead to respiratory discomfort, neurological issues, and an increased risk of lung cancer and pneumoconiosis. Enhancing ventilation within factory buildings has proven to be an economical approach to mitigating these risks. This study employs computational fluid dynamics (CFD) to model the airflow and dust transport within a large welding workshop measuring 300 m in length, 28 m in width, and 21 m in height. The impact of the exhaust-to-supply air ratio (ESR) and the height of the side exhaust port (SEP) on dust removal efficiency is investigated. Comparative analysis of transport dynamics between low-density aluminum alloy welding fume and high-density carbon steel welding fume reveals optimal dust exhaust designs. The study identifies two peaks in workshop air velocity at 0–2 m and 8–12 m above the ground, with the top exhaust port (TEP) outperforming the SEP in dust removal. An increased ESR accelerates the upward migration of welding fume, reducing lateral dispersion. An improperly set SEP height can lead to airflow short-circuiting or excessive lateral dispersion, hindering effective dust removal. Optimal SEP height for aluminum alloy and carbon steel dust are determined to be 5 m and 6 m, respectively.
- 28 August 2026
- Published by MDPI AG in Atmosphere
- Vol. 17 (9) , 843
Open AccessOptimization of Ventilation Systems in Large Welding Workshops with Multiple Dust Sources: A Case Study of a 300-m-Long Welding Workshop
Welding technology, extensively utilized in modern industry, poses significant health risks due to metal dust exposure, which can lead to respiratory discomfort, neurological issues, and an increased risk of lung cancer and pneumoconiosis. Enhancing ventilation within factory buildings has proven to be an economical approach to mitigating these risks. This study employs computational fluid dynamics (CFD) to model the airflow and dust transport within a large welding workshop measuring 300 m in length, 28 m in width, and 21 m in height. The impact of the exhaust-to-supply air ratio (ESR) and the height of the side exhaust port (SEP) on dust removal efficiency is investigated. Comparative analysis of transport dynamics between low-density aluminum alloy welding fume and high-density carbon steel welding fume reveals optimal dust exhaust designs. The study identifies two peaks in workshop air velocity at 0–2 m and 8–12 m above the ground, with the top exhaust port (TEP) outperforming the SEP in dust removal. An increased ESR accelerates the upward migration of welding fume, reducing lateral dispersion. An improperly set SEP height can lead to airflow short-circuiting or excessive lateral dispersion, hindering effective dust removal. Optimal SEP height for aluminum alloy and carbon steel dust are determined to be 5 m and 6 m, respectively.