中央空调毕业设计

毕业设计（论文）题目名称：惠新大厦中央空调系统设计学院名称：能源与环境学院班级：建环学号：学生姓名：指导教师：年月日-I-论文编号：惠新大厦中央空调系统设计专业：建筑环境与设备工程姓名：教导老师：摘要本设计为惠新大厦中央空调设计。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。一层除了有单独办公室，还有一个长17.8m，宽15.6的办公大厅，不适合用风机盘管加新风系统，选用全空气系统。二层到十层楼层，大部分为单独办公室，所以全部选用风机盘管加新风系统。风机盘管为卧式暗装，新风不承担室内负荷；全空气系统为一次回风系统，室内送风采用散流器下送方式。新风从墙洞引入，再由各层的新风机组集中处理供应。冷冻水由地下室的冷冻机房供应，采用了闭式同程两管制水系统。水管用泡沫橡塑保温，风管采用离心玻璃棉。设计工程中考虑了消声、减振措施。关键词：中央空调，风机盘管加新风系统，全空气系统，大厦-I-CentralAir-conditioningDesignforHuiXinBuildingAbstractTheairconditioningengineeringofHuixinBuildingwasdesigned.Onthebaseofcoolingload,heatingandmoistureloadcalculation,primaryairfan-coilsystemandallairsystemareadoptedbywayoftechnicalandeconomicanalysis.Inadditiontoindividualofficelevel,thereisalength17.8m,widthof15.6intheofficelobby,notsuitableforfancoilplusfreshairsystem,useanallairsystem.Thesecondfloortotenfloors,mostasaseparateoffice,soallthefancoilselectionofanewairsystem.Thefreshairdoesn’tundertakeindoorloadanddeliversairthroughdoubledeflectiongrilleaftermixingthereturnairinthehorizontalrecessedfancoil.Thereturnairisharnessedonetimebytheairhandlingunitintheallairsystemandthehandledairisdeliveredthroughdoubledeflectiongrillebysidewallairsupply.Thefreshairissuppliedbyholeorshaftandhandledbythefreshairhandlingunit.Thechilledwaterwhichisaclosedtwo-pipedirectreturnwatersystemissuppliedbytherefrigeratingplantroom.Thethermalinsulationmaterialofwaterpipeandairductarefoamplasticsandcentrifugalglasswoolrespectively.Measuresofnoiseelimination,damp,firepreventionandsmokeextractionisconsideredduringthedesign.KeyWords:airconditioningprimaryairfan-coilsystemallairsystembuilding.-II-目录目录................................................................II1工程概况.......................................................-1-1.1原始资料.....................................................-1-1.2计算参数.....................................................-1-1.2.1基本气象参数..............................................-1-1.2.2室外计算参数..............................................-1-1.2.3室内设计参数..............................................-1-1.3动力资料：...................................................-2-1.4土建资料.....................................................-2-2负荷计算.......................................................-3-2.1围护结构瞬变传热形成冷负荷的计算方法.........................-3-2.1.1外墙和屋面瞬变传热引起的冷负荷............................-3-2.1.2内墙,楼板等室内传热维护结构形成的瞬时冷负荷...............-3-2.1.3外玻璃窗瞬变传热引起的冷负荷..............................-4-2.1.4透过玻璃窗的日射得热引起的冷负荷..........................-4-2.2设备散热形成的冷负荷.........................................-4-2.3照明散热形成的冷负荷.........................................-5-2.4人体散热形成的冷负荷.........................................-5-2.5新风冷负荷...................................................-5-3空调方案的确定.................................................-8-3.1空调方案的分类...............................................-8-3.1.1按空气处理设备的集中程度分为..............................-8-3.1.2按承担室内负荷所用的介质分为..............................-8-3.2空调方案的比较...............................................-8-3.3空调系统形式确定............................................-10-4确定风量、送风状态点及选型计算................................-13-4.1风机盘管加独立新风系统......................................-13-4.1.1夏季室内新风量的确定.....................................-13-4.1.2新风处理状态的确定，总风量及风机盘管风量的确定...........-14--III-4.1.3风机盘管选型.............................................-16-4.1.4新风机组的选型...........................................-17-4.2全空气系统..................................................-18-5风管水力计算.................................................-20-6水管水力计算..................................................-23-6.1水系统形式的分类............................................-23-6.1.1按管道数目分.............................................-23-6.1.2开式和闭式...............................................-23-6.1.3按环路分.................................................-23-6.1.4按流量来分...............................................-23-6.2水系统形式的确定............................................-24-6.2.1计算基本公式：...........................................-24-6.2.2凝结水管路系统的设计.....................................-24-6.3水力计算方法................................................-25-7冷冻站的设计..................................................-29-7.1制冷机组的选择..............................................-29-7.1.1各种制冷机的优缺点比较表................................-29-7.1.2制冷机的性能系数（COP）..................................-30-7.2冷却塔的选择................................................-31-7.3分集水器的选择..............................................-32-7.4膨胀水箱的选择..............................................-32-7.5冷冻水泵的选择..............................................-33-7.6冷却水泵的选择..............................................-34-7.7补水泵的选择................................................-34-8结论..........................................................-35-参考文献........................................................-36-致谢............................................................-37--1-1工程概况1.1原始资料惠新大厦是一个办公建筑。该办公楼地下一层为中央空调机房及停车场，地上一～十层为办公楼。冷却塔设于楼顶。每层高4m,总建筑高度40m，建筑面积21000m²。1.2计算参数1.2.1基本气象参