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Air conditioning piping system design principle: 1. The air conditioning piping system should have enough transmission capacity, for example, through the water system in the central air conditioning system to ensure that through each air conditioning unit or fan coil air conditioner circulating water to meet the design flow, in order to ensure the normal operation of the unit; As another example, in the steam absorption chiller by steam system to ensure that the absorption chiller need heat power. 2. The reasonable arrangement of pipeline, pipeline layout to use as much as possible with the program system, although the initial investment increases slightly, but easy to keep the loop hydraulic stability; If using different process system, each branch should be paid attention to in the design of the pressure between the balance problem. 3 . determining the diameter of the system, should guarantee to deliver design flow, low noise, and resistance loss and water in order to obtain the economic and reasonable effect. As is known to all, pipe diameter is more investment, but the flow resistance is small, circulating water pump power consumption is small, reduce operation cost, therefore, should determine an can make the sum of investment and operation cost for minimum diameter. At the same time, to put an end to heavy traffic in the design of small temperature difference problem, it is the economic principle of piping system design. 4. In the design, hydraulic calculation should be performed strictly, to ensure that conform to the requirements of the hydraulic balance between each loop, make the air conditioning water system in the actual operation has good hydraulic condition and thermal conditions.5. Air conditioning pipeline system should meet some of the central air conditioning load regulation of runtime requirements; 6. As much as possible in the design of air conditioning pipeline system adopts energy-saving technical measures; 7. Selection of pipeline system for pipes, fittings should comply with the relevant specification requirements; 8. Should pay attention to in the design of pipeline system is convenient for maintenance, operation, convenient adjustment.
目录
1 引言 1
1.1 暖通空调的简介 1
1.2 暖通空调设计的目的和意义 1
1.3 暖通空调的发展概况 1
1.4 设计的主要内容 3
2 设计说明 4
2.1建筑概况 4
2.2设计依据 4
2.3设计参数 4
2.4建筑围护结构参数 5
3负荷计算 7
3.1冷负荷计算依据 7
3.2空调冷负荷计算 7
3.2.1外墙、屋顶的瞬变传热的冷负荷 7
3.2.2外窗玻璃瞬变传导得热形成的的冷负荷 7
3.2.3玻璃窗日射得热形成的冷负荷 8
3.2.4灯光照明散热形成的冷负荷 8
3.2.5人体散热形成的冷负荷 9
3.2.6空调新风冷负荷 9
3.3空调湿负荷计算 10
4 空调方案确定 13
4.1 空调方案比较 13
4.2 空调方案确定 13
5 空调风系统的设计与计算 15
5.1 各房间送风方式的确定 15
5.2新风量和新风负荷的确定 15
5.2.1 新风负荷计算举例 16
5.3 风机盘管机组的选择 16
5.3.1 空气处理计算 16
5.3.2 选型 18
5.4 风口布置 18
5.4.1 新风入口注意事项 18
5.4.2 风道的布置和制作要求 19
5.4.3 新、排风口的防雨百叶尺寸的确定 19