天津地区初期运营地铁站夏季热环境及空调系统节能潜力分析
Summer thermal environment and energy-saving potential of air conditioning systems in underground railway stations at initial operation stage in Tianjin
摘要：
由于不同运营时期的地铁站热环境存在差异，初期运营地铁站空调系统运行模式若按既有车站统一管理可能导致能源浪费。本文基于对天津地区初期投运地铁地下车站公共区夏季热环境的实测及相关信息的调研，分析了该类地铁站夏季热环境特征及空调系统节能运行潜力。研究发现；对于测试地铁站，在过渡季和夏季，基本呈现室外、站厅、站台、轨行区空气温度依次降低，而相对湿度依次升高的特点；且夏季站内实测空调温度远低于设计值；隧道内空气比焓较室外更低，可视作天然冷源；经估算，该车站在天津夏季空调室外空气计算温度下，工作日隧道渗风产生的节能量为2 011.03 kW·h/d。基于研究结果，提出了相应的节能建议。
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