燃气锅炉离心式制冷机组机房设计说明书

I沈阳市某综合楼冷热源机房设计摘要本设计为沈阳市某综合楼空调冷热源设计和空调冷热源自控设计。建筑面积为127600m3，有地下一层，地上19层。通过计算，系统总的制冷量为2467KW,制冷机组采用活塞式空冷制冷机一台，型号YKAAAAP45CJF，制冷量为1230kw,根据房间的功能，夏季提供7/12℃冷冻水；冬季由板式换热机组提供50/60℃的热水供空调系统使用。全年采用一台热水锅炉为桑拿洗浴中心提供50℃卫生热水。本设计采用一台半容积式换热器，三台板式换热器。为了提高水力稳定性，使流量均匀分配，水系统管路采用补水泵补水和定压。第二部分是空调冷热源自动控制，它采用先进的变流量技术。夏季根据冷负荷和供回水参数进行变流量运行调节；冬季根据热负荷和供回水参数进行变流量运行调节。它们都是使用模糊控制算法。本自控还包括其它多种功能，比如：检测，控制。通过本次设计是室内环境得到改善，达到了设计要求。关键词：空调冷热源；制冷机组；半容积式换热器；板式换热器；热水锅炉；自控；变流量IIAbstractThedesignincludesthecoolingandheatingsourceforair-conditioningsystemandautomationsystemofacomplexbuildinginQingdao.Thegrossfloorareaisabout127600m2,Therearcnineteenfloorsandonefloorunderground.Thecolddutyis2467kWandthehotdutyis4800KW.TO:choose3screwwater-cooledrefrigerationunit,andthemodelsYKAAAAP45CJF.Theirmaximalburningofnaturalgasarc1230kW.thisdesignusestwowater-cooledrefrigerationunitascoldandheatsource,thesummerand7/12℃coolingwater;wintermonthswhentheplateheatexchangerunitforproviding50/60℃hotwaterairconditioningsystems.50℃bathingwaterisprovideddirectlybythreevacuumhotwaterunitsaroundthewholeyear.Inordertoraisethewatcrpowcrstability,makingtheevendistributionofvolumeofflow,thesystemusesMake-upwaterpumptosupplywaterandthepressurewasstabilized.Thesecondpartoftheprojectisautomationsystemdesignforthesubstation.Theautomationsystemadoptstheadvancedvariableflowtechnologies.Theflowratewillbechangedaccordingtothesummercoolingloadandparametersofsupplyandreturnwater.Inwinter,theflowratewillbechangedaccordingtotheheatloadandparametersofsupplyandreturnwater.Theyusefuzzycontroltheories.Theautomationdesignstillincludesotherusualfunctionssuchasscanning,alarmingandcontrollingforthesystem.theair-conditionroomaswellasrefrigeratorhousedrawing.Thedesigningmaketheenvironmentofindoorimproved.Hasachievedthedesignrequirement.KeyWords:Coolingandheatingsource,refrigeratingunit,Halfthevolumeheatexchanger,heatexchanger,hot-waterboiler,Automation,Variablefluidcontrol.3摘要......................................................................................................................................................IAbstract..................................................................................................................................................II1.工程概况及设计原始资料、设计依据...............................................................................................51.1工程概况设计原始资料及设计依据.....................................................................................52．空调系统概述....................................................................................................................................62.1气象参数....................................................................................................................................62.2室内设计参数：........................................................................................................................62.4空调系统划分............................................................................................................................73．空调负荷及新风量计算(计算详细过程见附录).............................................................................83.1空调冷湿负荷计算....................................................................................................................8计算依据...........................................................................................................错误!未定义书签。4．空调冷热源方案确定......................................................................................................................154.1空调冷热源一般设计原则......................................................................................................154.2常见空调冷热源及组合方式..................................................................................................154.3空调冷热源方案确定..............................................................................................................175．空调冷热源管路系统设计及主要设备选择..................................................................................185.1空调冷热源管路系统设计原则..............................................................................................185.2空调水系统管径的确定水利计算..........................................................................................185.3冷冻水系统设计......................................................................................................................205.3.1一次泵冷冻水系统.......................................................................................................205.3.2二次泵冷冻水系统.......................................................................................................205.3.3泵的分类.......................................................................................................................205.3.4冷冻水系统的选型.......................................................................................................235.4冷却水系统设计......................................................................................................................295.4.1冷却水系统形式............................................................................................