空调系统设计

本科毕业论文（设计）题目：上海市宇宏办公楼空调系统设计学院：机电工程学院专业：能源与动力工程姓名：杨维瑜指导教师：贺素艳2018年05月26日上海市宇宏办公楼空调系统设计Air-conditioningSystemDesignforShanghaiYuhongOffice郑重声明本人呈交的学位论文（设计），是在指导教师的指导下，独立进行研究工作所取得的成果，所有数据、图片资料真实可靠。除文中已经注明引用的内容外，本学位论文（设计）的研究成果不包含他人享有著作权的内容。对本论文（设计）所涉及的研究工作做出贡献的其他个人和集体，均已在文中以明确的方式标明。本学位论文（设计）的知识产权归属于青岛大学。本人签名：日期：I摘要本工程为上海市宇宏办公楼空调工程，属于舒适性空调，建筑总高43.5米，总建筑面积为10356平方米。地下一层，地上十一层，建筑总负荷冬季为258kW，夏季为346.2kW，冷水设计供回水温度为7/12℃，热水设计供回水温度为60/50℃。夏季冷源由两台水冷螺杆式冷水机组提供，冬季由换板式热器担负热负荷，通过管路上的阀门开关实现冬夏季的转换。本工程地下一层到地上四层为商业用房，五层到十一层为标准客房。其中，地下一层商业用房采用全空气空调系统，并辅以排风、排烟合用系统，以及补风系统；一到四层商场选用内区系统，外区风机盘管系统，厕所排风使用排气扇；标准层选用风机盘管加新风系统，内走廊设有机械排烟系统；在合用前室及楼梯间，设有机械加压送风系统。使用的风机盘管均为卧式暗装风机盘管，新风系统中新风处理到室内状态的等焓线，不承担室内冷负荷，然后与经过风机盘管处理后的室内循环空气同时送入室内,系统的冷、热负荷由空气和水共同承担。综合初投资、运行、管理费用考虑，冷源选用单螺杆式冷水机组，采用闭式双管冷冻水系统，冷却塔至于十一层楼顶。空调设备首先根据冷、热负荷进行初步选型，再用热负荷进行校核，最终确定机组型号。在防排烟方面，依据设计规范在楼梯间和电梯前室采用采用加压送风，地下室进行通风排烟。关键字：舒适性空调全空气系统风机盘管加新风系统IIAbstractThisworksforthecityofShanghaiYuhongofficeairconditioningproject,whichbelongstocomfortableairconditioning,buildingatotalheightof43.5meters,atotalconstructionareaof10356squaremeters.Groundfloor,elevenfloorsontheground,buildingatotalloadinwinterfor258kW,346.2kWforsummer,coldwaterdesignofsupplyandreturnwatertemperatureof7/12℃,thedesignofhotwatersupplyandreturnwatertemperatureof60/50℃.Summercoldsourcefromtwosetsofwatercooledscrewchiller,winterfromtheplatetypeheatexchangerisresponsibleforheatload,throughthevalveonthepipelinetoachievetheconversionswitchinwinterandsummer.Theundergroundlayertothegroundforthefourcommercialbuildings,fivelayertotheelevenlayerisastandardroom.Thegroundfloorcommercialspace,usestheentireairconditioningsystem,supplementedbyventilation,smokeextractionsystem,andaventilationsystem;onetofourlayerswithinthemallselectionsystem,outerfancoilsystem,toiletexhaustuseexhaustfan;standardlayerselectionoffancoilplusfreshairsystem,withinsidecorridormechanicalexhaustsystem;incommonantechamberandstaircase,withmechanicalpressurizationsystem.Theuseoffancoilunitsarethehorizontal-typedarkattireairblowerserpentined,freshairsysteminairhandlingtotheindoorstateisenthalpic,doesnotassumetheindoorcoolingload,andthenthroughthefancoilunitafterprocessingtheindoorcirculatingairintotheinterioratthesametime,thecold,heatloadbytheairandwatershare.IIIComprehensiveinitialinvestment,operation,managementcostconsiderations,coldsourceselectionofsinglescrewchiller,adoptsaclosedtypedouble-tubechilledwatersystem,coolingtowerfortheelevenfloorroof.Airconditioningequipmentaccordingtothepreliminaryselectionofcold,heatloadandheatload,check,ultimatelydeterminetheunitmodel.Inthesmoke,basedondesignspecificationsonthestaircaseandelevatorinfrontofroomadoptspressurization,ventilationandsmokeexhaustinundergroundchamber.Keywords：comfortairconditioningairsysteminfancoilplusfreshairsystem目录第一章原始资料...................................................................................................11.1工程概况...................................................................................................11.2室内外气象参数.......................................................................................11.3建筑结构...................................................................................................21.4传热系数的计算.......................................................................................2第二章空调房间热、冷、湿负荷的计算.........................................................42.1热负荷计算...............................................................................................42.2冷负荷的计算...........................................................................................52.3空调湿负荷的计算.................................................................................12第三章空调方案的制定...................................................................................133.1空调系统的分区处理.............................................................................133.2空调系统的设计原则.............................................................................133.3方案比较.................................................................................................143.4系统选择说明.........................................................................................15第四章空气处理过程计算...............................................................................164.1全空气夏季空气处理过程.....................................................................164.2冬季空气处理过程.................................................................................174.3风机盘管加新风系统的空气处理过程.................................................18第六章空调水系统设计及水力计算...............................................................276.1空调水系统的设计原则..........................................................................276.2空调水系统方案的确定..........................................................................276.3水系统水力计算举例..............................................................................286.4冷凝水设计..............................................................................................29第七章其它设备的选择计算...................................................