天津地區初期運營地鐵站夏季熱環境及空調系統節能潛力分析
Summer thermal environment and energy-saving potential of air conditioning systems in underground railway stations at initial operation stage in Tianjin
摘要：
由于不同運營時期的地鐵站熱環境存在差異，初期運營地鐵站空調系統運行模式若按既有車站統一管理可能導致能源浪費。本文基于對天津地區初期投運地鐵地下車站公共區夏季熱環境的實測及相關信息的調研，分析了該類地鐵站夏季熱環境特征及空調系統節能運行潛力。研究發現；對于測試地鐵站，在過渡季和夏季，基本呈現室外、站廳、站臺、軌行區空氣溫度依次降低，而相對濕度依次升高的特點；且夏季站內實測空調溫度遠低于設計值；隧道內空氣比焓較室外更低，可視作天然冷源；經估算，該車站在天津夏季空調室外空氣計算溫度下，工作日隧道滲風產生的節能量為2 011.03 kW·h/d。基于研究結果，提出了相應的節能建議。
Abstract：
Due to the differences in the thermal environment in the underground railway stations during different operating periods, the operation mode of the air conditioning system in underground railway stations at the initial operation stage according to the unified management of existing stations may lead to energy waste. Based on the measurement of the summer thermal environment in public areas and the investigation of relevant system information in the underground railway stations at the initial operation stage in Tianjin, this paper analyses the summer thermal environment characteristics and the energy-saving potential of the air conditioning system in this type of station. The study finds that for the tested station, in the transition season and summer, the air temperature of the outdoor, station hall, platform and tunnel basically decreases, while the relative humidity increases sequentially. The air conditioning temperature in the station in summer is much lower than the design value.The specific enthalpy of the air in the tunnel is lower than that of outdoor air. It can potentially be used as a natural cold source. It is estimated that at the summer outdoor air design temperature, the energy-saving caused by the tunnel infiltration air is 2 011.03 kWh per working day. Based on the research results, this paper also proposes the corresponding energy-saving suggestions.
Keywords:undergroundrailwaystation;initialoperation;thermalenvironment;airconditioningsystem;energy-savingoperation