北京市某行政办公楼空调系统设计.doc

1、摘 要本设计为北京市某行政楼空调工程设计。通过方案比较，在负荷计算的基础上，采用了风机盘管加新风和全空气两种空调系统形式。风机盘管为卧式暗装，新风不承担室内负荷，室内回风与新风混合后经侧送风口送出；全空气系统为一次回风系统，室内送风采用散流器送风方式。新风从墙洞或新风竖井引入，再由新风机组集中处理供应。冷冻水由冷冻机房供应，采用了闭式异程两管制水系统。设计工程中考虑了消声、减振的措施。关键词：空调；风机盘管加新风系统；全空气系统；新风Air Conditioning Design of Beijing officeABSTRACTThe air conditioning engineering

2、 of Beijing office building was designed. On the base of cooling load, heating load and moisture load calculation, primary air fan-coil system and all air system are adopted by way of technical and economic analysis. The fresh air doesnt undertake indoor load and delivers air through fixed deflectio

3、n grille after mixing the return air in the horizontal recessed fan coil. The return air is harnessed one time by the air handling unit in the all air system and the handled air is delivered through double deflection grille by sidewall air supply. The fresh air is supplied by hole or shaft and handl

4、ed by the fresh air handling unit. The chilled water which is a closed two-pipe direct return water system is supplied by the refrigerating plant room. Measures of noise elimination and damp is considered during the design.Key Words: air conditioning; primary air fan-coil system; all air system; fre

5、sh air目 录1绪论5原始资料5执行规范52设计内容要求52.1设计内容52.2设计要求62.2.1图纸要求62.2.2说明书要求63空调负荷的计算63.1冷负荷为的计算63.1.1外墙传热冷负荷73.1.2外窗的温差传热冷负荷83.1.3外窗太阳辐射冷负荷83.1.4内围护结构的传热冷负荷93.1.5人体冷负荷93.1.6设备冷负荷93.1.7房间的总负荷93.2空调房间的湿负荷103.3热负荷的计算113.3.1围护结构的耗热量113.3.2门窗缝隙渗入冷空气的耗热量123.3.3各个房间的总热负荷123.3.4建筑空调房间的总热负荷123.4新风量的确定和新风负荷123.4.1新风量

6、的确定123.4.2计算新风负荷123.4.2.1夏季新风冷负荷123.4.2.2冬季新风热负荷133.5负荷汇总134空调冷热源的选择134.1工程概况134.2.1空调热源的选择135空调系统方案的确定135.1各层空调方式的确定155.1.1方案概述155.1.2确定原则155.1.3确定空调方式155.2空调设备的选择155.2.1各层个房间的风量计算及机组选型155.2.2冷水机组的选择计算175.3气流组织的设计175.3.1概述185.3.2空调送风口和回风口195.3.2.1送风口195.3.2.2回风口195.3.3空间气流分布的形式205.4末端设备的选择计算205.4.1散流器的选择计算206空调风系统的设计206.1概述206.2风管的布置206.3确定风管形状及截面尺寸206.3.1风管的形状206.3.2风管内空气流动阻力计算217空调水系统的设计217.1空调水系统的划分217.2空调水系统的分类比较