建环毕设说明书 中央空调系统设计

摘要

摘要

本次毕业设计的主要内容是对天津市某 酒店进行中央空调系统设计。该建筑位于天津市，共5层，总制冷负荷约为900KW,室内采用风机盘管系统为主。本次设计涉及到空调系统的划分，冷热负荷的计算，空调设备的选型，风管的水力计算和布置，管道的消声，防震，冷冻机房的设计，水系统的划分，水管的水力计算及水管布置，水泵和通风机的选择，通风系统的自动控制等。

关键词：中央空调、通风设计、设备选择、水力计算、冷冻机房

I

Abstract

Abstract

the main content of this graduation design is a four-star hotel in Tianjin for central air conditioning system design. The building is located in Tianjin, a total of 5 layers, total cooling load is 900KW, indoor fan coil system. This design involves the division of the air conditioning system, cooling and heat load calculation, the selection of air conditioning equipment, duct hydraulic calculation and arrangement of pipeline of noise elimination, shockproof, the design of the cooling room, the division of water system, the hydraulic calculation of pipe and pipe arrangement, the choice of the pump and fan, ventilation system, such as automatic control

II

目录

目录

第1章 工程概况 ...................................................................................................................... 1

1.1室外气象参数................................................................................................................. 1 1.2室内设计参数................................................................................................................. 1 第2章 负荷计算 ........................................................................................................................ 2

2.1冷负荷理论根据 ............................................................................................................ 3

2.1.1房间冷负荷的构成： ...................................................................................... 3 2.1.2.房间湿负荷的构成： ....................................................................................... 3 2.1.3主要计算公式： ................................................................................................. 3 2.2 新风量的计算 ................................................................................................................ 7

2.2.1 新风量标准的选取 ............................................................................................ 8 2.2.2 新风量的确定 ..................................................................................................... 8 2.2.3 新风量计算结果与分析 ................................................................................... 8

第三章 方案选择与计算 ........................................................................................................... 9

3.1 空调系统方案选择 ....................................................................................................... 9 3.2 空调冷热源选择 ........................................................................................................ 10

3.2.1 空调冷热源选择原则 .................................................................................... 10 3.2.2 冷热源方案比较............................................................................................... 11 3.2.3 本工程选择计算.............................................................................................. 12 3.3 新风系统的方案确定 ................................................................................................ 13 3.4 空调水系统论证 ......................................................................................................... 13

3.4.1 按调节特征分类.............................................................................................. 13 3.4.2 按管路布置方式分类 .................................................................................... 15

第四章 空调设备的选择与计算 .......................................................................................... 15

4.1 风机盘管的计算与选择 ........................................................................................... 16

4.1.1 风机盘管的选择计算 .................................................................................... 16 4.1.2 风机盘管选型 .................................................................................................. 17 4.2 新风机组的选择 ......................................................................................................... 18

4.2.1 新风方案 ....................................................................... 错误！未定义书签。 4.2.2 新风机组的选择计算 .................................................................................... 18 4.2.3 排风热回收的节能效益 ................................................................................ 19 4.2.4 新风机组的布置.............................................................................................. 20

第五章 气流组织 .............................................................................................................. 21

5.1 空调房间的气流组织形式 ....................................................................................... 21 5.2 空调房间的送回风口形式 ....................................................................................... 22

目录

5.2.1 送风口的选择 .................................................................................................. 22 5.2.2 回风口的选择 .................................................................................................. 23 5.3 气流组织计算 ............................................................................................................. 23

5.3.1 风机盘管散流器风口选择 ........................................................................... 24 5.3.2 风机盘管侧送风口选择计算 ....................................................................... 24 5.3.3 排风口的选择 .................................................................................................. 25

第六章 水力计算 ..................................................................................................................... 27

6.1 风系统水力计算 ......................................................................................................... 27

6.1.1 通风管道的设计原则 ................................................................................... 27 6.1.2 通风管道的选择.............................................................................................. 27

6.1.3 计算方法 ........................................................................................................... 27 6.2 空调水系统的水力计算 ........................................................................................... 28

6.2.1 空调水系统的设计原则 ................................................................................ 28 6.2.2 水力计算及水泵选型方法与注意 .............................................................. 29 6.2.3 水力计算结果与设备选择 ........................................................................... 29 6.3水系统附件的设计 .................................................................................................... 30

6.3.1膨胀水箱的设计计算..................................................................................... 30 6.3.2集水器和分水器 .............................................................................................. 31 6.3.3除污器和水过滤器 ......................................................................................... 31 6.3.4放空气器 ........................................................................................................... 32 6.3.5阀门 .................................................................................................................... 32 6.3.6水系统安转要求 .............................................................................................. 32

第7章 机房的设计与布置 ................................................................................................... 34 第8章 通风与防排烟 ............................................................................................................ 36

8.1概述 ................................................................................................................................ 36

8.1.1卫生间通风设计 .............................................................................................. 36 8.1.2设备房的通风设计 ......................................................................................... 36 8.1.3建筑防排烟设计 .............................................................................................. 37 8.1.4高层建筑防排烟 .............................................................................................. 37 8.2地下室通风、排烟设计与计算 .............................................................................. 38 第9章 消声、减振与保温设计 .......................................................................................... 39

9.1消声与隔声设计 ......................................................................................................... 39 9.2减振设计 ....................................................................................................................... 39

9.2.1冷冻机、水泵及风机等设备的减振 ......................................................... 39 9.2.2管道减振 ........................................................................................................... 40 9.3保温设计 ....................................................................................................................... 40 参 考 文 献 .............................................................................................................................. 41 致谢 .............................................................................................................................................. 42