地铁设备用房VAV变风量系统控制特性研究  

Study of the Control Characteristics of Variable Air Volume(VAV)Air-conditioning System for Subway Equipment Rooms

作　　者：王艳[1] 李焱池 篮杰[3] 夏三县 严清 余伟之 肖云婷 严天 徐新华[5] WANG Yan;LI Yanchi;LAN Jie;XIA Sanxian;YAN Qing;YU Weizhi;XIAO Yunting;YAN Tian;XU Xinhua(Zhongyuan University of Technology,Zhengzhou 450000,China;Changsha Rail Transit Group Co.,Ltd.,Changsha 410021,China;China Railway Siyuan Survey and Design Group Co.,Ltd.,Wuhan 430063,China;Zhengzhou Metro Group Co.,Ltd.,Zhengzhou 450000,China;Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]中原工学院,郑州450000 [2]长沙市轨道交通集团有限公司,长沙410021 [3]中铁第四勘察设计院集团有限公司,武汉430064 [4]郑州地铁集团有限公司,郑州450000 [5]华中科技大学,武汉430074

出　　处：《铁道标准设计》2022年第10期191-196,共6页Railway Standard Design

基　　金：国家自然科学基金项目(51678263);校企联合研究项目(0231261845)。

摘　　要：为实现碳达峰及碳中和的重大目标,地铁空调系统的能源节约问题愈发凸显。由于地铁设备管理用房的负荷随设备启停变化较为明显,传统定风量空调系统无法改变系统送风量,存在冷量浪费的问题。采用变风量空调系统可实现不同房间、不同时刻的按需送风。搭建郑州某地铁车站小系统变风量空调系统模拟平台,并与地铁设备用房负荷模型集成,实现房间风量的按需供给;通过变风量系统模拟平台对该地铁设备用房变风量系统进行控制模拟运行,研究系统的风量控制特性;对末端VAVbox中阀门开度进行控制,实现在不同负荷需求下房间的按需送风。结果表明,该系统实际运行风量与需求风量基本吻合,偏差小于1%;并进一步比较了定风量系统和变风量系统的温控效果,其中采用定风量系统房间温度降低至34℃(低于设计温度36℃),而变风量系统能够精确控制房间温度为36℃,避免了冷量浪费。To achieve the goals of carbon emission-peak and carbon neutrality,the energy conservation problem of subway air-conditioning system has become more and more prominent.Since the load of the subway equipment management room varies obviously with the start and stop of the equipment,the traditional air-conditioning system of constant air volume cannot change the air supply volume of the system,which would cause the waste of the cooling capacity.The air-conditioning system of variable air volume can be used to achieve the air supply on demand for different rooms at different times.This paper builds a simulation platform of the VAV air-conditioning system for a subway station in Zhengzhou and the platform is integrated with the load model of the subway equipment room to achieve on-demand air supply.The simulation platform is used to simulate the control characteristics and air volume characteristics of the VAV system.By adjusting the valve opening of the VAV-box terminal,the demanded air volume of the room is supplied on according to different load demands.The results show that the actual operating air volume basically matches the demand air volume and the deviation is less than 1%.The control effects of room temperature between the constant air volume system and the VAV system are compared.The room temperature with the constant air volume system is decreased to 34℃,which is lower than the design temperature of 36℃.While,the room temperature with the VAV system can be precisely controlled at 36℃,and the waste of cooling capacity is avoided.

关 键 词：地铁车站 变风量系统 设备管理用房 按需送风 控制特性 

分 类 号：U231.4[交通运输工程—道路与铁道工程] TU831[建筑科学—供热、供燃气、通风及空调工程]