某10层大厦暖通空调、通风、防排烟设计——毕业设计

某10层大厦暖通空调、通风、防排烟设计

某10层大厦暖通空调、通风、防排烟设计

摘 要

本建筑位于江苏省南京市，是一栋楼层为10层，集餐饮、娱乐、住宿和地下车库为一体的综合性建筑物。

本设计旨在对该大厦进行空调、通风与防排烟设计，力求达到经济、舒适、实用，并尽可能满足节能的要求。

总建筑面积17300m2，空调面积约8179m2。夏季设计冷负荷为1209kW，是一项能耗较大的工程。

本工程采用水冷螺杆冷水机组作为空调的冷源进行夏季制冷，冬季采用热水锅炉进行供暖。通过对各种空调方式的比较，精品商店等大空间区域采用一次回风集中式中央空调系统，其余场所采用吊顶风柜或独立新风加风机盘管等半集中方式。

该大厦一至三楼东、西侧空调区域分别共用一个冷冻水环路，四至十层共用另一冷冻水环路。

建筑内走道采用竖井排烟，排烟风机设置在10层；中庭通过在裙楼屋顶层采光棚旁设置风机来实现排烟；防烟楼梯间和消防前室进行机械送风来保证疏散安全，其中防烟楼梯间设置正压为40Pa~50Pa，消防前室设置正压为25Pa~30Pa。地下车库采取车道自然补风，设置机械排风、排烟。卫生间均采用通风器进行排风。

关键词：水冷螺杆冷水机组，节能，风机盘管系统，机械排烟

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某10层大厦暖通空调、通风、防排烟设计

Abstract

The building is located in Nanjing Jiangsu Province,with total layers of 10 ,which is a set including catering,entertainment,accomodation and an underground garage as one integrated building .

The design aims at affording comfort air conditioning for the building, achieving criterion of fire control, and offering an economical, comfortable，convenient and practical system. Also it should meet the requirement of energy-saving.

The building construction area is 17300m2 while air-conditioning area is about 8179m2. The total design cooling load in the summer is 1209kW. It’s a project with heavy energy-consuming.

The project adopts water-cooled screw chiller are selected in summer to offering chilled water, and boiler producing hot water is selected in winter.

After a comparison of different air conditioning plans, the boutique shops and big space area adopts central air-conditioning system with primary return air, while other parts adopt fan coil unit system with independent fresh air or ceiling type air handling units.

The buildingon Floor 1 to Floor 3 of the easten side and the west side respectively one of the chilled water loop, Floor 4 to Floor 10are served by another closed water loop.

Building in the aisle by exhaust shaft, the exhaust fan is arranged in the 10 layer; atrium through the fan are arranged in the roof layer lighting shed adjacent to achieve smoke; smoke preventing staircase and the fire room for air to ensure the evacuation safety of machinery, including smoke preventing staircase set pressure is 40Pa~50Pa, fire control room is set pressure 25Pa~30Pa.The underground garage supplementary air is induced by the traffic lane naturally, while mechanical air and smoke exhaust systems are installed. All washing rooms are ventilated by ventilated machines.

Keywords:

water-cooled

screw

chiller，energy-saving,fan-coil

unit

system,mechanical ventilation system

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目录

第1章 绪论 ............................................................................................. 1

1.1 设计题目 ......................................................................................................... 1 1.2 工程概况 ......................................................................................................... 1 1.3 设计任务 ......................................................................................................... 1

第2章 设计依据..................................................................................... 2

2.1 气象资料 ......................................................................................................... 2 2.2室内设计参数 .................................................................................................. 2 2.3 土建资料 ......................................................................................................... 2 2.4 朝向修正率 ..................................................................................................... 3 2.5其他资料 .......................................................................................................... 3

第3章 空调负荷计算 ............................................................................ 4

3.1精品商店负荷示例计算(不含新风) ............................................................... 4

3.1.1外墙冷负荷 ........................................................................................... 4 3.1.2内墙冷负荷计算 ................................................................................... 5 3.1.3外玻璃窗瞬变传热引起的冷负荷 ....................................................... 5 3.1.4透过玻璃窗进入日射得热引起冷负荷 ............................................... 6 3.1.5人员散热引起的冷负荷 ....................................................................... 7 3.1.6照明冷负荷 ........................................................................................... 8 3.1.7各分项逐时冷负荷汇总 ....................................................................... 9 3.2新风冷负荷计算 ............................................................................................ 10

3.2.1新风量的确定 ..................................................................................... 10 3.2.2新风负荷计算 ..................................................................................... 10 3.3湿负荷计算 .................................................................................................... 10 3.4其他房间负荷计算 ........................................................................................ 10

第4章 方案的比较确定 ........................................................................ 12

4.1空气调节系统的分类 .................................................................................... 12 4.2空调系统的实现方式 .................................................................................... 12 4.3设计方案的比较确定 .................................................................................... 13 4.4水冷式冷水机组 ............................................................................................ 13

第5章 送风状态、送风量的确定及设备选型 .................................. 14

5.1 送风量计算 ................................................................................................... 14

5.1.1 大空间房间送风量和送风参数的确定 ............................................ 14

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5.1.2客房送风量和送风参数的确定 ......................................................... 15 5.2 空气处理设备选型 ....................................................................................... 18

5.2.1 空调机组的选择 ................................................................................ 18 5.2.2 风机盘管的选择 ................................................................................ 19 5.2.3新风系统的设计及新风机组选型 ..................................................... 20

第6章 气流组织设计 .......................................................................... 21

6.1大空间房间气流组织示例计算 .................................................................... 21 6.2大堂气流组织示例计算 ................................................................................ 22 6.3客房气流组织示例计算 ................................................................................ 23 6.4回风气流设计 ................................................................................................ 24 6.5送回风口尺寸选型汇总 ................................................................................ 24

第7章 水力计算................................................................................... 25

7.1风管的设计计算 ............................................................................................ 25 7.2水管的设计计算 ............................................................................................ 26

7.2.1水系统形式 ......................................................................................... 26 7.2.2水管选材 ............................................................................................. 27 7.2.3供、回水管管径的确定 ..................................................................... 27 7.2.4 水流动阻力的确定 ............................................................................ 28 7.2.5 水管水力计算 .................................................................................... 29

第8章 冷热源机房设计 ...................................................................... 33

8.1冷水机组的配置 ............................................................................................ 33 8.2热源选择及设备选型 .................................................................................... 33 8.3 膨胀水箱的选择 ........................................................................................... 34 8.4 水泵选型计算 ............................................................................................... 35 8.5冷却水系统设计 ............................................................................................ 35

8.5.1冷却塔的选型 ..................................................................................... 35 8.5.2冷却水泵的选型 ................................................................................. 36 8.6 分水器和集水器计算 ................................................................................... 37

第9章 防排烟、通风系统设计 .......................................................... 39

9.1 防排烟系统设计概述 ................................................................................... 39 9.2 防火防烟分区的划分 ................................................................................... 40 9.3地下车库通风、防排烟系统设计 ................................................................ 40

9.3.1 地下车库概况 .................................................................................... 40 9.3.2 排风量和排烟量的计算 .................................................................... 40

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9.3.3风机选型 ............................................................................................. 41 9.3.4送风量计算 ......................................................................................... 41 9.3.5防排烟系统设计计算 ......................................................................... 42 9.4地下室其他房间通风，防排烟设计 ............................................................ 42 9.5 地上一至十层通风、防排烟系统设计 ....................................................... 44

9.5.1中庭排烟设计计算 ............................................................................. 44 9.5.2 厨房排油烟、通风系统设计 ............................................................ 44 9.5.3 地上房间排烟设计计算 .................................................................... 45 9.6 机械加压送风系统设计 ............................................................................... 46 9.7 卫生间通风系统设计 ................................................................................... 48

第10章 保温、消声与隔振 ................................................................ 50

10.1 管道保温设计 ............................................................................................. 50 10.2 消声与隔声设计 ......................................................................................... 51 10.3 减振设计 ..................................................................................................... 51

结 论 ....................................................................................................... 52 参考文献 ................................................................................................... 53 致 谢 ....................................................................................................... 54 附录1 各房间负荷汇总表 ................................................................... 55 附录2 各房间逐时负荷汇总表 ........................................................... 57 附表3 空调送风管水计算表 ............................................................... 63 附表4 水管水力计算表 ....................................................................... 75 附表5 地下室通风排烟风管水力计算 ............................................... 86 附表6 地上房间排烟风管水力计算 ................................................... 91

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