毕业设计(论文)
题 目 西安市银河大厦空调系统设计 学院名称 城市建设学院 指导教师 职 称 班 级 学 号 学生姓名
年6月9日
摘 要
本工程为西安市银河大厦通风空调施工图设计。该建筑地下一层，地上十七层，总建筑面积为17373m2，其中空调面积为10700m2。地下室为设备用房，主楼1 ~9层为办公用房，10层为空中花园，11~17层为居民住宅；裙楼共三层，均为证券公司营业用房。本中央空调设计范围主要是主楼1~9层办公区和裙房1~3层证券营业区。
本工程夏季空调总冷负荷为1417kw，选用一台离心式冷水机组作为空调冷源（单机制冷量1400kw）。冬季总热负荷为1134kw，由市政热网提供热源，通过一台换热器换热用于冬季空调供暖（换热量为1163kw）。空调机房设在本楼地下一层设备房内。
本工程中央空调系统形式：主楼1~9层和裙楼3层为风机盘管加新风系统，裙楼2层为吊挂机组加独立新风，裙楼1层为全空气系统，采用吊挂式空气处理机组。
空调水系统采用两管制，分为3个区，主楼1~3层为A区，4~9层为B区；裙楼1~3层为C区。立管采用异程式，各层采用同程式。
对本建筑的地下室主要设备用房和走道采取机械通风排烟设计。对主楼的防烟楼梯间和消防电梯前室进行正压送风防烟设计，保证楼梯间余压40Pa~50Pa，消防前室余压25Pa~30Pa。楼梯间采用自垂式百叶送风口，每隔两层设一个，每层前室采用常闭式电动百叶送风口。
关键词：空调系统，风机盘管加独立新风，全空气系统，通风排烟，防烟
I
南华大学城市建设学院本科毕业设计
ABSTRACT
This project is about construction of ventilation and air conditioning design in Galaxy Mansion of Xi’an. The building has basement, and seventeen floors over ground. And, the overall floorage of it is 17,373 ㎡ in which 10,700 ㎡for design. Basement for the equipment room, the main building of 1~9 layer for office space, the 10layer is a sky garden, 11~17storeys for residential building. The skirt building has three floors, and all securities companies operating room. The central air conditioning design range is the main building1~9layer office and the skirt building 1~3layer for securities business district.
The project total cooling load of air conditioning in summer1,417kw, one centrifugal chilled water refrigerating machine is employed as the cold source of the conditioner(single cooling capacity of 1,400kw ).The total heat load in winter is 1,134kw, and the municipal heating network to provide heat source. through a plate heat exchanger heat exchanger for air conditioner in winter heating ( heat transfer for 1,163kw ) . Air conditioning machine room located in the equipment room of the basement.
The project of central air conditioning systems: main building1~9 layer and skirt building 3 layer for fan coil and primary air system. The skirt building 2 layer for hanging air transact unit and primary air system. The skirt building 1 layer is adopted with all-air system , use the hanging air transact unit.
The water system use two-pipe water system, divided into 3 zones, the main1~3layer for A area,4~9 layer for B area; foundation1~3layer for C area. Risers using direct return system,
each layer using reversed return system.
The construction of the basement of main equipment room and hallway to take mechanical design of. As positive pressure air supply smoke control design is adopted
in stairwell, the antechamber and common antechamber of staircase , ensure the stairwell pressure over40Pa~50Pa，antechamber and common antechamber of staircase pressure over 25Pa~30Pa. Tuyere of stair half is adopted with Gravity Vertical Louver Type Air Opening, every two layer is provided with a chamber. and the normally closed electric tuyere is used in each layer antechamber and common antechamber of staircase.
Key words: Air-conditioning system, Fan coil units with independent fresh air
system, Ail-air system, Ventilation and smoke extraction, Smoke control
II
南华大学城市建设学院本科毕业设计
目录
摘 要................................................................................................................................................. I ABSTRACT ..................................................................................................................................... II 第 1 章 工程概况 ........................................................................................................................... 1
1.1工程概况 ............................................................................................................................. 1 1.2设计范围 ............................................................................................................................. 1 1.3设计条件 ............................................................................................................................. 1 1.4冷热源条件 ......................................................................................................................... 2 第 2 章 负荷计算 ......................................................................................................................... 3
2.1冷负荷计算概述 ................................................................................................................. 3
2.1.1冷负荷计算参数 ...................................................................................................... 3 2.1.2冷负荷计算 .............................................................................................................. 4 2.2新风冷负荷计算 ................................................................................................................. 6 2.3各房间的负荷计算 ............................................................................................................. 6
2.3.1各房间冷负荷详细计算 .......................................................................................... 6 2.3.2 房间负荷汇总 ......................................................................................................... 7
第 3 章 空调系统方案选择 ......................................................................................................... 9
3.1 空调水系统的选择 ............................................................................................................ 9 3.2空调风系统的选择 ........................................................................................................... 11
3.2.1空调系统的选择原则 ............................................................................................ 11 3.2.2 方案的比较 ........................................................................................................... 11 3.2.3 系统的选择 ........................................................................................................... 13
第4章 空调设备选型 ................................................................................................................... 14
4.1 末端设备的选型 .............................................................................................................. 14
4.1.1 空气处理方案及有关参数的查取 ....................................................................... 14 4.1.2末端设备的选择计算 ............................................................................................ 15 4.1.3末端设备的布置 .................................................................................................... 19 4.2 新风机组的选择 .............................................................................................................. 20
4.2.1新风机组选择计算 ................................................................................................ 20 4.2.2新风机组的布置 .................................................................................................... 21
第 5 章 气流组织计算 ................................................................................................................. 22
5.1 气流组织 .......................................................................................................................... 22
5.1.1 气流组织的基本要求 ........................................................................................... 22 5.1.2 空气分布器 ........................................................................................................... 23 5.2 气流组织的方式及其设计计算 ...................................................................................... 23 第 6 章 水力计算 ......................................................................................................................... 25
6.1水系统水力计算 ............................................................................................................... 25
6.1.1 基本公式 ............................................................................................................... 25
III
南华大学城市建设学院本科毕业设计
6.1.2 冷冻水供回水管路水力计算 ............................................................................... 26 6.1.3 凝水管系统设计 ................................................................................................... 34 6.2 风系统水力计算 .............................................................................................................. 35 第7章 空调的冷热源 ................................................................................................................. 36
7.1．空调系统的冷源 ............................................................................................................ 36
7.1.2制冷机的种类及特点 ............................................................................................ 36 7.1.2制冷机的选择 ........................................................................................................ 36 7.1.3制冷机的设计运行工况及各项参数 .................................................................... 37 7.2．空调系统的热源 ............................................................................................................ 37
7.2.1换热器的分类 ........................................................................................................ 37 7.2.2换热器的选用原则 ................................................................................................ 38 7.2.3换热器的选择 ........................................................................................................ 38 7.3水泵 ................................................................................................................................... 40
7.3.1冷冻水泵 ................................................................................................................ 40 7.3.2热水循环泵 ............................................................................................................ 40 7.3.3冷却水泵 ................................................................................................................ 41 7.4 分水器和集水器的选择计算 .......................................................................................... 42
7.4.1分、集水器的构造 ................................................................................................ 43 7.4.2分、集水器的计算选择 ........................................................................................ 43 7.5 冷却塔的选择 .................................................................................................................. 44 7.6 系统定压方式 .................................................................................................................. 45 7.7放空气器 ........................................................................................................................... 46 7.8阀门 ................................................................................................................................... 46 第8章 通风、防排烟系统 ......................................................................................................... 47
8.1 地下室通风及排烟 .......................................................................................................... 47
8.1.1设备房的通风计算 ................................................................................................ 47 8.1.2地下室排烟计算 .................................................................................................... 48 8.1.3风管及风口尺寸计算 ............................................................................................ 48 8.2 卫生间换气 ...................................................................................................................... 48 8.3正压送风系统 ................................................................................................................... 48
8.3.1加压送风量的计算 ................................................................................................ 48 8.3.2风机选择 ................................................................................................................ 51
第9章 管道保温、消声与防振 ................................................................................................... 53
9.1 管道保温 .......................................................................................................................... 53 9.2 管道消声防振 .................................................................................................................. 54 参考文献 ......................................................................................................................................... 55 总结................................................................................................................................................. 56 致 谢............................................................................................................................................. 57 附录................................................................................................................................................. 58
附录Ⅰ ..................................................................................................................................... 58 附录Ⅱ ..................................................................................................................................... 62
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