南昌市某国投商业中心中央空调系统设计

摘要本设计为南昌市国投商业中心，其中有国投商场、沃尔玛商场、国投办公。共有四层，制冷面积为20084.54平方米，空调主机承担冷负荷为3280kw，空调负荷面积指标为163.3w/m2,一二三层有国投商铺、沃尔玛商场、四层为国投办公，设有屋面停车，地下室为机房、等设备房。本次设计以此建筑为设计对象，设计中央空调系统，为商业中心提供舒适的环境。本次设计采用全空气一次回风系统，末端采用散流器送风，各区域均匀布置。对于大空间商场，全空气系统换气充分，空气污染少，在春秋过渡季节可实现全新风运行，节约运行耗能，产生震动。噪声传播的问题较少。本设计的主要内容：主要有负荷计算、空调系统的选择、空调风系统与水系统的设计、空调设备的选型、防排烟、管道保温、消声减振的设计等几个部分，并且对本次设计的空调系统进行了概预算。关键字：空调系统；全空气系统；一次回风系统；AbstractThisdesignisthecommercialcenterofNanchang,whichhasthecountryvotedshoppingmalls,WAL-MARTshoppingmalls,andthecountryvotedoffice.Consistsoffourlayers,coolingareais20084.54squaremeters,air-conditioninghostbearcoolingloadis3280kw,air-conditioningloadareaindexfor163.3w/m2,123layerhaveinvestmentshops,Wal-Martstores,fourlayerinthecountryvotedforoffice,isprovidedwitharoofparking,thebasementforroom,equipmentroom.Thedesignofthisbuildingasthedesignobject,designcentralair-conditioningsystem,forcommercialcentertoprovidecomfortableenvironment.Thisdesignusestheprimaryreturnairsystem,attheendofthediffuser,theregionaluniformlayout.Forlargespaceshoppingmalls,thefullairventilationsystem,airpollution,inthespringandautumncanachieveanewyearofthetransitionseasontorun,saveenergyconsumption,generatevibration.Theproblemofnoisetransmissionisless.Thedesignofthemaincontent:mainlyintheselectionofloadcalculation,selectionofair-conditioningsystem,airsystemandwatersystemdesign,airconditioningequipment,smokecontrol,pipeinsulation,noisereductionandvibrationisolationdesignandforthedesignoftheairconditioningsystemofthebudget.Keywords：airconditioningsystem；airsystem；areturnairsystem目录第一章概述..........................................................................................................11.1工程概述.....................................................................................................11.2设计依据.....................................................................................................11.2.1围护结构热工指标.....................................................................11.2.2室内外设计参数..........................................................................11.2.3室内设计参数...............................................................................21.2.4体力活动性质...............................................................................2第二章负荷计算................................................................................................42.1夏季冷负荷的计算..................................................................................42.1.1夏季冷负荷组成..........................................................................42.1.2空调冷负荷计算方法.................................................................42.2室内湿负荷的计算..................................................................................82.2.1室内湿负荷组成..........................................................................82.2.2湿负荷的计算方法.....................................................................82.3各区的负荷计算.......................................................................................8第三章设计系统的选择...............................................................................113.1常见系统的分类.....................................................................................113.2空调系统的确定.....................................................................................123.3新风量的确定方法................................................................................123.4全空气系统的设计计算.......................................................................133.4.1一次回风系统夏季处理过程.................................................133.4.2一次回风系统夏季设计工况所需冷量..............................143.4机组选型...................................................................................................16第四章空调风系统.........................................................................................174.1中央空调常见风口类型.......................................................................174.2送回风管及风口布置...........................................................................184.3气流组织设计.........................................................................................184.3.1送回风管及风口风速...............................................................184.3.2气流组织计算.............................................................................184.3.3送风口分布.................................................................................194.4风管设计...................................................................................................194.4.1风管水力计算步骤...................................................................194.4.2计算方法......................................................................................204.4.3一次回风系统风管水力计算.................................................21第五章空调水系统.........................................................................................235.1水系统的分类.........................................................................................235.2冷冻水管设计.........................................................................................235.2.1水管水力计算步骤..............................................