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4.5 管道安装
常规通风系统的风管管材采用镀锌钢板，风管及其配件的板材的厚度按《通风管道技术规程JGJ141-2004》表3.2.1-1通风管按中低压（排烟管按高压）系统规格制作、安装。
风管安装前应将风管内部擦拭干净，安装后应将端头开口处封住，施工中时刻注意保持管内清洁，严防施工垃圾落入风管。4 通风，空调系统中风管与风机、风机箱、空气处理器等设备的相连处应设置不燃材料制作的柔性风管。凡室内风管与外墙连接处的新风口、排风口均采取防雨措施(图中未注明全部由设备负责)。
Design General Information1. Design task sources
Design this is a town of Shanghai City Youth Activity Center, condition design provided by the professional title of this design task book provided and relevant materials, construction, according to the current design specification and relevant regulations, for air conditioning and ventilation system construction set.
2 Engineering Survey
Ventilation design of the project for the Chongming County Bureau of Education * * town youth activities center (without air conditioning design), the ground layer three total construction area of 4016.94m, total building height of 12.550m, for the multi-storey building structure.
3 Design basis
As municipal projects, for all residents to have a more comfortable living environment and facilities, in strict accordance with the design standards, improve the design level of the house.
The design of ventilation and air conditioning design for comfort, safety, energy saving, scheme should be practical, accurate calculation of design, selection of related parameter specification.
Design of indoor temperature and humidity parameters based on energy principle, according to the space use by HVAC design specifications and design manual selection. Parameters of the building area and space use, equipment layout, see the specific circumstances of building materials
The design in accordance with the requirements of the design task, design strictly in accordance with the current technical specifications, regulations promulgated by the state. Standard, specification mainly adopts the:
[1] "code for fire protection design of buildings" GB50016-2006
[2] "heating ventilation and air conditioning design" GB50019-2003
[3] "building technical regulations" smoke DGJ08-88-2006
[4] "design standard for energy efficiency of public buildings" GB50189-2005
[5] "hot summer and cold winter region residential building energy efficiency design standard" JGJ 134-2010
[6] "ventilation and air conditioning engineering code for construction quality acceptance of" GB50243-2002
[7] construction to provide professional information graph
4. Technical information
4.1 System description of choice
Ventilation design for this project is a town of Chongming County Bureau of education of youth activities center. According to the requirements of the design task, design strictly in accordance with the current technical specifications, regulations promulgated by the state. Through scheme comparison, the final selection of the design of air conditioning water system closed, vertical different way, double control, single stage pumps, variable flow system, the air conditioning water system has the advantages of simple structure, small investment in initial stage, the pipeline is not easy to produce fouling and corrosion of pump power consumption smaller, etc..
This project from the energy conservation, environmental protection, easy to install, easy to repair and other point of view, considering the advantages and disadvantages of three kinds of system, the design of the site is a town of Chongming County of Shanghai City, the winter is not municipal heating, and each room on indoor environmental requirements are different, we choose two different systems. For small load part adopt fan-coil unit plus fresh air system, for the constant volume air primary return air system using the region a layer of report hall of this larger load.