XUYun-hua,CONGBei-hua,ZOULi,et al.Simulation of Ventilation and Dehumidification System Adaptability of Utility Tunnel in Coastal City[J].China Water & Wastewater,2022,38(7):109-115.
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Simulation of Ventilation and Dehumidification System Adaptability of Utility Tunnel in Coastal City

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第38卷 Number: 第7期 Page: 109-115 Column: Date of publication: 2022-04-01
Author(s):
XU　Yun-hua1;  CONG　Bei-hua2;  ZOU　Li3;  LI　Xian-bin4;  HUANG　Xiao-li1;  NI　Yang1;  XIE　Jun1;  PANG　Geng-yu1;  XU　Shuai-xian1;  ZHANG　Yang1; WANG Jia-hua1;  ZHU Hao-chuan1
（1. Shanghai Urban Construction Design & Research Institute Co. Ltd.， Shanghai 200125， China； 2. Shanghai Institute of Disaster Prevention and Relief， Tongji University， Shanghai 200092， China； 3. Shanghai Tongtai Fire & Security Technology Co. Ltd.， Shanghai 201703， China； 4. School of Ocean Science and Engineering， Shanghai Maritime University， Shanghai 201306， China）
Keywords:
coastal city;  utility tunnel;  ventilation and dehumidification;  simulation
Abstract:
A three-dimensional unsteady mathematical model for ventilation, heat and mass transfer of a ventilation section of a utility tunnel built in a coastal city was established, and the flow field, temperature and humidity distribution of the section of the utility tunnel were analyzed. After ventilation, the humidity and temperature were determined by ambient air state and thermal environment in the utility tunnel. In the case of high temperature alarm in the utility tunnel, mechanical ventilation could achieve a good cooling performance when the ambient air dry-bulb temperature was equal to or below 35 ℃. When the temperature in the utility tunnel was lower than the dew point temperature of the ambient air, water droplets and mist were easily formed at the inlet of the air supply fan and on the surface of low-temperature wall, which should be paid attention to.
Last Update: 2022-04-01