Simulation of Cooling and Energy Consumption of Subway Tunnel Utilizing Evaporative Cooling Technology

• Main Authors: You-Syuang Lin, 林佑璇
• Other Authors: 柯明村
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/7wf33p

碩士 === 國立臺北科技大學 === 能源與冷凍空調工程系碩士班 === 100 === MRT utilizes Piston Effect created by the operating subway to exchange the heat between outer air via the vent shaft and the air flow in the tunnel and to transfer to pressure flow. However, Piston Effect could not only take off plenty of heat but mechanical ventilation also is used to cool the station and tunnel too quickly solving the problem of rising temperature. Mechanical ventilation can successfully cool down the tunnel to a specific temperature by enhancing the air flow but it may relatively increase the electrical bill. Therefore, this paper analyzes energy consumption of fan with installing the evaporative cooling equipment in Environmental Control System. The subway simulation program named Subway Environmental Simulation (SES) is utilized to analyze the underground Taipei MRT system with and without platform screen doors to study and compare the energy consumption. The full-scale geometrical parameters and operational conditions in summer of Taipei city were input. The study not only conforms to the regular but also reduce the power consumption by utilizing evaporative cooling equipment with 10 m3/s TEF even if the general temperature is higher that with 20 m3/s. The monthly power consumption is 56,544 kWh with 20 m3/s TEF and 56,544 kWh with 10 m3/s TEF. In other words, it could save 26,784kWh energy while using evaporative cooling equipment with 10m3/s TEF and that is much better than the one with 20 m3/s. Moreover, the total effectiveness of evaporative cooling is 71,064 kcal/hr while the flow rate of Track way Exhaust Fan is 10m3/s.