论文总字数：60528字
摘 要
2，共设坐席6744个（其中固定座椅3072个）；主体建筑为框架三层，局部设地下一层，建筑高度29.2m。建筑功能分布：地下一层为设备用房，地上一层为室内运动场及附属用房，地上二层为观众厅及附属用房。该多功能体育馆，可进行球类、体操、文艺演出等的需要。多功能体育馆建筑是典型的大空间、人员密集场所, 其场内的温湿度、风速等均有比较严格的控制要求，用单一的送风方式无法满足空调系统的需求。体育馆建筑的使用时间也较为特殊，比赛场馆全年运行次数小于20次，但管理人员的办公用房需要全年运行。在办公区域采用了风机盘管加新风系统，新风系统按全年使用和赛时使用分为两个不同的系统，并在全年运行区域使用了排风热回收的方案。比赛场馆采用喷口顶部送风加部分坐席送风，满足高大空间的温湿度需求。冷热源也根据体育场馆运行时间、周边资源分布、设备投资和运行维护费用进行了分析比较。
本次设计内容包括：冷热负荷计算、气流组织设计、水力计算、冷热源分析、节能分析等。
关键词：中央空调系统设计；排风热回收；高大空间气流组织；节能
DESIGN OF CENTRAL AIR-CONDITIONING SYSTEM OF CERTAIN PUBLIC BUILDING
03111601 Zhang Xinyue
Supervised by Chen Zhenqian
Abstract： This design of air-conditioning system is oriented towards the Huainan Stadium. The stadium is 19820m2 with 6744 seats, among which 3072 are fixed. The main building is a 29.2 meter high frame structure with three floors. There are basements in some sections as well. The building has equipment room in the basement, indoor playing field with supporting rooms on the first storey and audience hall with supporting rooms on the second storey. The stadium is capable of holding ball games, gymnastic competitions and performances.
The multifunctional stadium is a typical example of large space that holds a dense population. The indoor humidity and temperature, as well as wind speed, demand stringent specification. A single air supply method is not able to meet the needs of air-conditioning system. The service time of stadiums are special. Venues are used less than 20 times per year, while the administrative offices need to operate all year round. Thus, in administrative area, we use fan coil unit plus fresh air system, which has two different modes that fits either the all-year needs from administrative offices or the one-time but huge needs from sports activities. We also install the heat recovery ventilators in “all-year” sections. The stadium uses top vents, as well as under-seat air supply to satisfy the need of both temperature and humidity from massive space. Both cooling and heating resources are also discussed and analyzed by investigating the running time, the surrounding resources, the appliance investments and the maintenance charge.
The project contains: The calculation of heating and cooling loads; The design of air-flow organization; The calculation of hydraulic; The analysis of heating and cooling resources and the analysis of energy reduction.
Key words: Analysis of central air-conditioning system; Exhaust air heat recovery; Air distribution of large space; Energy conservation
目 录
1绪论…………………………………………………………………………………………………1
1.1引言………………………………………………………………………………………1
2 设计资料…………………………………………………………………………………………3
2.1工程概况………………………………………………………………………………………3
2.2设计规范………………………………………………………………………………………3
2.3设计参数………………………………………………………………………………………3
2.3.1室外设计参数………………………………………………………………………………….3
2.3.2室内设计参数…………………………………………………………………………………4
2.3.3围护结构参数……………………………………………………………………………5
3建筑负荷手工计算……………………………………………………………………………7
3.1冷负荷计算……………………………………………………………………………………7
3.1.1通过围护结构进入的非稳态传热形成的逐时冷负荷…………………………………………7
3.1.2通过围护结构进入的稳态传热形成的冷负荷………………………………………………7
3.1.3透过玻璃窗进入的太阳辐射得热形成的逐时冷负荷…………………………………………8
3.1.4照明散热形成的冷负荷………………………………………………………………………9
3.1.5设备散热形成的冷负荷………………………………………………………………………9
3.1.6人体散热形成的冷负荷………………………………………………………………………10
3.1.7新风冷负荷……………………………………………………………………………………10
3.1.8手算法计算冷负荷实例………………………………………………………………………11
3.2热负荷计算……………………………………………………………………………………16
3.2.1围护结构传热耗热量……………………………………………………………………16
3.2.2冷风渗透耗热量………………………………………………………………………………16
3.2.3冷风侵入耗热量………………………………………………………………………………17
3.2.4手算法计算热负荷实例………………………………………………………………………17
4冷热源方案分析………………………………………………………………………………27
4.1 全年运行区冷热源分析………………………………………………………………………28
4.1.1 全年运行区冷热源设备选型………………………………………………………………28
4.1.2 经济计算分析…………………………………………………………………………………29
4.2 赛时运行区冷热源分析…………………………………………………………………………32
4.2.1赛时运行区冷热源设备选型……………………………………………………………………32
4.2.2经济计算分析…………………………………………………………………………………33
4.3冷热源选择结论…………………………………………………………………………………35
5系统分区……………………………………………………………………………………………36
5.1根据防火分区…………………………………………………………………………………36
5.2根据温湿度要求…………………………………………………………………………………36
5.3根据空间功能要求……………………………………………………………………………36
5.4根据内外区负荷特性的差异……………………………………………………………………37
6空气处理方案…………………………………………………………………………………39
6.1外区风机盘管 独立新风系统…………………………………………………………………39
6.1.1夏季空气处理过程……………………………………………………………………………39
6.1.2冬季空气处理过程………………………………………………………………………………41
6.2内区风机盘管 独立新风系统…………………………………………………………………......43
6.2.1夏季空气处理过程……………………………………………………………………………….43
6.2.2冬季空气处理过程………………………………………………………………………43
6.3外区全空气系统…………………………………………………………………………………46
6.3.1外区夏季空气处理过程………………………………………………………………………46
6.3.2外区冬季空气处理过程………………………………………………………………………47
6.4内区全空气系统………………………………………………………………………………49
6.4.1内区夏季空气处理过程………………………………………………………………………49
6.4.2冬季空气处理过程………………………………………………………………………50
7气流组织计算…………………………………………………………………………………52
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