An innovative ventilation system using piston wind for the thermal environment in Shanghai subway station. (November 2020)

• Record Type: Journal Article
• Authors: Li, Guoqing; Meng, Xin; Zhang, Xiaowei; Zhang, Ling; Du, Chenqiu; Li, Nan; Yu, Wei; Xiong, Jie; Zhang, Shaoxing; Li, Baizhan
• Is Part Of: Journal of building engineering. Volume 32(2021)
• Publication Date: 2020-11
• Subjects: Subway station -- Seasonal free cooling -- Adjustable platform screen door -- Piston wind effects -- Adaptive thermal comfort; Building -- Periodicals; 690.05
• DOI: 10.1016/j.jobe.2020.101276
• Languages: English
• ISSNs: 2352-7102

Abstract

Abstract: Subway transportation systems have been rapidly developed in China, due to their advantages of convenience, high speed, and relieving above-ground traffic pressure. Greater attention has been paid to creating satisfactory thermal environments in subway stations whilst avoiding excessive energy consumption. This case study aims to introduce an innovative ventilation system that exploits free cooling and ventilation using piston wind. The system comprises an adjustable vent installed above and below a platform screen as well as regulative ducts in the tunnel. Such an innovative system can significantly reduce the dependence on traditional mechanical ventilation systems in subway stations. This study presents an example of an innovative design involving intelligent operation for the Shanghai subway environmental system. The aPMV theory is employed to guide the thermal environment design for the system. The effectiveness of this innovative design in terms of the thermal environment and air quality (CO2 concentration) is evaluated through onsite measurements when in operation. The results show that a significant saving of energy consumption has been achieved without sacrificing passengers' thermal comfort. This innovative ventilation system has great potential for application in many other places. Highlights: Introduce an innovative ventilation system to exploit free cooling using piston wind. Install adjustable louver vents on above and below the platform screen at station. Investigate a practice of adjustable platform screen door at Shanghai subway station. Employ the aPMV theory to guide the intelligent operation for thermal environment. Achieve a significant saving of annual electricity without sacrificing thermal comfort.