论文总字数：37587字

摘 要

本工程为贵阳市君恒办公综合楼中央空调系统设计，该空调系统为舒适性空调系统。该工程位于贵州省贵阳市。总建筑面积18000平方米，建筑总高度为24.0米，地下1层，地上6层。主要功能：地下1层为停放24辆汽车的停车场，地上1层为办公室、接待室、中央机房和厨房，地上2-6层为办公室、会议室及档案室。

本设计负荷计算采用非稳态方法计算冷负荷，计算出8：00～17：00的逐时冷负荷。各办公室等小面积房间均采用风机盘管加独立新风系统，新风处理到室内空气焓值，通入每个房间，不承担室内负荷；各大型会议室则采用全空气系统。空调水系统设计为一次泵变流量闭式系统。本工程因地处贵阳只需夏季制冷，故采用单螺杆式冷水机组进行制冷，选用一台型号为约克YSBABAS05CCE螺杆式冷水机组，机房布置在地下1层，冷冻水温度为7/12℃，冷却水温度为32/37℃。

关键词：冷负荷 风机盘管 水力计算 冷热源

The design of central air-conditioning system in the general building of Guiyang City

Abstract

This project is designed for a cadre’s medical health center of Guiyang, and this is a comfortable air conditioning system. This project is located in Guiyang City, Guizhou Province.The total construction has 18,000 square meters, and 24.0 meters high, including one basemen and six floors. Main functions: the basement is a underground park for 24 cars; On the ground floor 1 for office, reception room, central room and kitchen, 2-6 layer on the ground for office, conference room and record room.

The design load calculation cooling load is obtained by using the unsteady method, calculate the hourly cooling load of 8:00 ~ 17:00. The office, a small area room were used in fan coil plus fresh air system, fresh air to indoor air enthalpy value, access to each room, does not bear the load of the room; the large conference room with all air system. Air conditioning water system is designed as a closed system with variable flow pump. Because this project is located in Guiyang, it just need summer cooling.So it adopts the single screw water chiller refrigeration for cooling, and use one model of York YSBABAS05CCE screw water chillers. Decorate room is in the basement floor, chilled water temperature is7/12 ℃, and cooling Water temperature is 32/37 ℃.

Key words:Cooling load, Fan Coil Unit(FCU),Hydraulic Calculation, Cold and heat sources

目录

摘要..................................................................................................................................I

ABSTRACT..................................................................................................................II

第一章 空调负荷计算 1

1.1设计说明 1

1.2室内外设计参数 1

1.2.1贵阳室外气象参数 1

1.2.2 室内参数 2

1.2.3维护结构的参数 2

1.2.4人员密度以及人体的散热和散湿 3

1.2.5 照明负荷 3

1.2.6 设备负荷 3

1.2.7食物散热，散湿 3

1.3室外的冷负荷的计算方法 3

1.3.1 温差传热形成的冷负荷 3

1.3.2通过窗户形成的冷负荷 3

1.4新风量的计算 4

1. 5典型房间的负荷计算 ....................................................................................................5

第二章 空调系统的设计和选型 11

2.1 设计说明 11

2.2 选型计算 12

2.2.1全空气系统的计算 12

2.2.2风盘加新风系统的计算 15

2.3设备的选型 17

2.3.1全空气系统的选型 17

2.3.2新风机组的选型 17

2.3.3风机盘管的选型 18

第三章　空调系统中风系统的设计 19

3.1设计说明 19

3.2设计部分 19

3.2.1散流器的选择 19

3.2.2办公室气流组织的计算 20

3.2.3大厅散流器和办公室侧送风口的选择 21

3.2.4风系统的水力计算 21

3.2.5地下车库防排烟的设计 24

第四章　空调系统中水系统的设计 27

4.1设计说明 27

4.2冷冻水管的设计 28

4.3冷凝水管的设计 32

第五章 制冷机房的设计和设备的选择 34

5.1 制冷机房及其设备布置原则 34

5.1.1制冷机房设计............................................................................................34

5.1.2制冷机房设计原则.....................................................................................34

5.1.3机组选型原则............................................................................................34

5.1.4机组选型计算............................................................................................34

5.1.5冷冻水泵的计算和选择..............................................................................35

5.1.6冷却水泵的计算和选择..............................................................................38

5.1.7阀门的选择 ..............................................................................................38

5.2 分水器和集水器的选择 39

5.3膨胀水箱配置与计算 39

5.4电子除垢仪的选择 40

5.5冷却塔的计算选择 40

5.6管道的保温及防腐设计 43

5.6.1风管的保温 44

5.6.2水管的保温 45

5.6.2风管和水管的防腐.................................................................................................45

5.7消声减震设计 46

5.7.1消声设计 46

5.7.2减震设计 48

总结 49

参考文献 50

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