Optimization of Dual-Design Operation Ventilation System Network Based on Improved Genetic Algorithm

Yanbo Feng, Han Zhu (), Xiwen Feng, Qianru Chen, Xiangyu Sun and Zhengrong Li
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Yanbo Feng: School of Mechanical Engineering, Tongji University, Shanghai 200070, China
Han Zhu: School of Mechanical Engineering, Tongji University, Shanghai 200070, China
Xiwen Feng: School of Mechanical Engineering, Tongji University, Shanghai 200070, China
Qianru Chen: School of Mechanical Engineering, Tongji University, Shanghai 200070, China
Xiangyu Sun: Tongji Architectural Design (Group) Co., Ltd., Shanghai 200092, China
Zhengrong Li: School of Mechanical Engineering, Tongji University, Shanghai 200070, China

Energies, 2023, vol. 16, issue 24, 1-15

Abstract: The COVID-19 pandemic has emphasized the crucial role of ventilation systems in mitigating cross-infections, especially in infectious-disease hospitals. This study introduces a dual-design operation ventilation system that can operate under two sets of ventilation conditions for normal and epidemic times. A challenge is optimizing duct diameters for required airflow while maintaining hydraulic balance. We designed an improved genetic algorithm with an adaptive penalty factor and velocity constraint, as well as the improved crossover probability and mutation probability. The improved genetic algorithm is suitable for ventilation system networks, which can find a better combination of air duct diameters to improve the hydraulic balance rate and reduce the usage of air valves, resulting in efficient hydraulic balancing commissioning. A supply air ventilation system of an actual hospital in China was selected as a case study, and the number of imbalanced air ducts was reduced from 14 to 4. Compared with the traditional genetic algorithm, it has a faster search speed and a better global search ability, which is effective for the optimal design of ventilation system networks.

Keywords: ventilation system network; design optimization; genetic algorithm (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: 2023
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