Because this design does not involve cold and heat sources, it is assumed that there is a computer room on the ground in the process of drawing. The return pipe of each floor is connected by the same program design, and through the riser, it forms a loop with the chiller and the fan coil unit at the end. The air conditioning water is used in the form of the lower back. The air in the room will be treated with condensate in the fan coil. This design does not take into account the hydraulic calculation of the water pipe, but is close to the toilet.

On the basis of the calculation of the cooling load in the indoor air conditioning area, the enthalpy moisture diagram is drawn to calculate the air volume and cooling amount of the fan coil, and then the type selection of the fan coil is completed through the air volume and the cooling capacity. After selection, the arrangement of fan coil units is started in the ceiling of each room. When the position of the fan is determined, the air return pipe, the air supply pipe, the air conditioning water path and the new air duct are drawn, in which the new air duct is not connected to the air conditioner and only needs to be transported to the room. The design of the return air pipe is not calculated, and the size of the interface is in accordance with the original size of the equipment. According to the fresh air volume of each new duct and the standard speed standard, the resistance of the pipe diameter and the most unfavorable path is calculated. Connect the supply and return pipe from the air tray to form a water system diagram. The diameter of each pipe and the most unfavorable loop resistance of the water system are calculated according to the amount of water required by each pipe and the standard speed standard. The resistance and the total cold water required by the most disadvantageous loop of the water system can be recommended for the type of chilled water pump.

The air conditioning system and the water system and the wind pipe and water pipe plan are reflected on the building base map, so as to complete the design of the whole office building.

目录

绪论 1

1工程概况 2

1.1 建筑信息 2

1.2 室外气象参数 2

1.3 室内设计参数 2

2空调负荷计算 3

2.1 围护结构瞬变冷负荷计算原理 3

2.1.1 外墙和屋面瞬变传热引起的冷负荷 3

2.1.2外窗瞬变传热引起的冷负荷 3

2.1.3设备及照明散热形成的冷负荷 4

2.1.4 人体散热形成的冷负荷： 4

2.2 湿负荷 5

3空调系统方案的确定 8

3.1 空调系统的分类 8

3.1.1 按照空气处理设置的情况分类 8

3.1.2 按负担室内负荷所用的介质种类分类 8

3.2 方案比较 9

3.2.1 全空气系统与空气－水系统方案比较 9

3.2.2  风机盘管+新风系统的特点 10

3.2.3  一次回风系统特点 11

3.3 空调系统的选择 11

3.3.1  空调系统的选择原则 11

3.3.2  空调系统选择结果 11

4风量的计算 13

4.1 风机盘管加新风 13

4.2 一次回风系统 14

4.2.1  一次回风回风量的确定方法 15

4.2.2  新风冷负荷 15

4.2.3  一次回风负荷计算 15

5设备选型 16

5.1 新风机组的选型 16

5.2 风机盘管选型 16

5.2.1风机盘管的选型计算法 16

5.2.2 风机盘管型号 17

6 冷水机组的选型 18

6.1冷水机组的选择 18

6.1.1  活塞式冷水机组 18

6.1.2  螺杆式冷水机组 18

6.1.3  离心冷水机组 18

6.1.4  风冷式冷水机组 18

6.2  选型结果 19

7风系统管道水力计算 20

7.1 通风管道的设计原则 20

7.2 通风管道的选择与制作 20

7.3 风口的布置 20

7.4风管阀门的选择 20

7.5 风管设计说明 20

7.6 送风口的选择 21

7.7 用假定流速法对风管进行水力计算 21

7.8 风管道的风力计算 22