The environment and energy consumption of a subway tunnel by the influence of piston wind

Liu, Minzhang; Zhu, Chunguang; Zhang, Huan; Zheng, Wandong; You, Shijun; Campana, Pietro Elia; Yan, Jinyue

doi:10.1016/j.apenergy.2019.04.026

Cited by 62 publications

(11 citation statements)

References 22 publications

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“…(CO2), volatile organic compounds, odors and particulates. In UMSs, indoor CO2 [35] and particulate matters (PMs) concentration [5,36] are major environmental parameters linked with IAQ:…”

Section: Iaq Inside Metro Stationsmentioning

confidence: 99%

See 1 more Smart Citation

A review on available energy saving strategies for heating, ventilation and air conditioning in underground metro stations

You

Zhang

et al. 2021

Renewable and Sustainable Energy Reviews

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“…(CO2), volatile organic compounds, odors and particulates. In UMSs, indoor CO2 [35] and particulate matters (PMs) concentration [5,36] are major environmental parameters linked with IAQ:…”

Section: Iaq Inside Metro Stationsmentioning

confidence: 99%

“…Due to the complexity of the environment of UMSs, various systems have been developed to suit different function requirements. These systems can generally be classified into 1) public areas HVAC system [40,41], 2) under platform exhaust (UPE) system [42], and 3) tunnel ventilation system [43,44].…”

Section: Hvac Systems In Umssmentioning

confidence: 99%

A review on available energy saving strategies for heating, ventilation and air conditioning in underground metro stations

You

Zhang

et al. 2021

Renewable and Sustainable Energy Reviews

Self Cite

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“…Ma et al [31] developed a one-dimensional model using the IDA Simulation Environment based on an actual metro line and tested the wind velocity in the actual tunnel to validate the results. Liu et al [32] created a 1/16 scaled subway tunnel model to develop and validate a three-dimensional computational model. Krasyuk et al [33] carried out a field measurement of piston wind in an actual subway and refined the network calculation model based on the measured results.…”

Section: Introductionmentioning

confidence: 99%

Behavior of Piston Wind Induced by Braking Train in a Tunnel

et al. 2020

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It is critical to discover the behavior of piston wind induced by a braking train in a tunnel, but there is little research on the theoretical derivation for piston wind behavior. Predicting piston wind behavior as an unsteady airflow by a theoretical formula is hard work due to the complexity of train running states and airflow fields. Herein, we develop a mathematical model to investigate the behavior of piston wind as an unsteady airflow, considering the variation of wind direction in the annular area. In general, the theoretical model is validated by experiments. However, experimental studies about piston wind are scarce. In this study, we simulated the emergent braking process of a train to validate the mathematical model by establishing a 1/50 scaled experimental configuration. The piston wind data tested in the experiment have good agreement with the results calculated by theoretical formulas. In addition, sensitivity analysis of the effect parameters of piston wind (i.e., tunnel length, train length, train speed and blockage ratio) was conducted. The theoretical formulas derived in this paper are applicable to similar train running conditions in railway tunnels or subway tunnels.

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“…So it is of great importance to conduct the research on the piston effect on the airflow and thermal environment in the station. In subway station, relative research have been conducted widely by researchers in previous published papers [10][11][12][13]. For example, Wang et al conducted the experimental study on particulate matter (PM) concentrations in Shanghai subway system and found that piston wind would influence the pollutant distribution in the station [11].…”

Section: Introductionmentioning

confidence: 99%

“…For example, Wang et al conducted the experimental study on particulate matter (PM) concentrations in Shanghai subway system and found that piston wind would influence the pollutant distribution in the station [11]. Liu et al focused on CO2 concentration and thermal environment in subway system and analyzed the energy consumption when the piston wind is utilized fully [12]. Due to the potential of the E3S Web of Conferences 165, 04075 (2020) https://doi.org/10.1051/e3sconf/202016504075 CAES 2020 piston wind in energy saving, vented platform screen doors are investigated widely in recent years.…”

Section: Introductionmentioning

confidence: 99%

Characteristics of airflow in the platform with high-speed train passing through the underground railway station

Xie

2020

E3S Web Conf.

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Underground high-speed railway station is becoming more and more popular in recent years, due to its advantage in relieving the tense situation of urban construction land. HVAC (Heating, Ventilation and Air Conditioning) system of underground railway station consumes large energy, therefore it is necessary to find a way to decrease the energy consumption in stations. Reasonable ventilation and air organization are the basis of energy-saving design of environment control system in stations. The energy consumption could be reduced greatly by utilizing the piston wind properly. In the present work, airflow characteristics in the station are investigated when high-speed train is passing through the underground railway station with CCM+ software. Results show that piston wind has different effects on airflow in the platform when the high-speed train is running. However, the air velocity in the platform is always lower than 5 m/s. In order to analyse the effect of piston wind on the airflow in the platform in more detail, the velocities and temperatures at waiting line are extracted. The air velocity near two ends of platform is larger and the similar results could also be observed for temperatures.

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The environment and energy consumption of a subway tunnel by the influence of piston wind

Cited by 62 publications

References 22 publications

A review on available energy saving strategies for heating, ventilation and air conditioning in underground metro stations

A review on available energy saving strategies for heating, ventilation and air conditioning in underground metro stations

Behavior of Piston Wind Induced by Braking Train in a Tunnel

Characteristics of airflow in the platform with high-speed train passing through the underground railway station

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