Coupling Computational Fluid Dynamics and EnergyPlus to Optimize Energy Consumption and Comfort in Air Column Ventilation at a Tall High-Speed Rail Station

Haitao Wang (), Ning Lu, Fanghao Wu and Jianfeng Zhai
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Haitao Wang: School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei 230601, China
Ning Lu: School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei 230601, China
Fanghao Wu: School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei 230601, China
Jianfeng Zhai: School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei 230601, China

Sustainability, 2023, vol. 15, issue 17, 1-16

Abstract: With the rapid development of railways, the air distribution and thermal comfort within waiting halls of high-speed railway stations receive significant attention. In this research, the EnergyPlus and CFD simulation coupling method was employed to investigate three ventilation schemes (column attached ventilation (CAV), side jet ventilation (SJV), column attached with side jet ventilation (CASJV)) for the waiting hall of a high-speed railway station in Guangzhou. The research focused on analyzing the airflow characteristics, thermal comfort, and cooling energy consumption associated with each ventilation method. The results show that thermal stratification phenomena are obvious in summer waiting halls. Most of the predicted mean vote (PMV) values in the research are from −0.5 to 0.5, indicating a comfortable thermal environment. In certain areas of both the CAV and SJV, the LPD 1 > 40%, which may lead to a strong sensation of a cold draft for passengers. Compared with the SJV, the CAV and CASJV save 11.89% and 9.25% in cooling energy consumption, respectively. Therefore, the CASJV is more suitable for applications in high-speed railway station waiting halls. The results of this study aim to support the application of this combination of attached ventilation and an “air column” air supply in high-speed railway stations.

Keywords: CFD simulation; EnergyPlus; airflow organization; thermal comfort; cooling energy consumption (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
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