暖通空调设计说明书

Ⅰ摘要本次工程为广州市环保局办公楼中央空调系统设计。为一栋六层的多层建筑，其中地下一层，地上六层。总建筑面积5946m2，空调面积为3720m2。建筑的冷负荷为495.95KW，冷负荷指标为83W/㎡；热负荷为258.66KW，热负荷指标为43KW/㎡。主要功能房间有办公室、中型会议室、大会议室等。本设计所有房间均采用了风机盘管加新风系统。新风从室外引入，处理到室内空气焓值，新风机组仅承担新风冷负荷与部分新风湿负荷，而风机盘管承担室内全部冷负荷及部分新风湿负荷。对于冷热源的选择,冷源采用两台LSLGF300螺杆式冷水机组，单台制冷量为324KW。热源采用两台CWNSO.1.5小型低温燃气锅炉，单台发热量为150KW。水系统采用两管制，分两个区，采用异程式水系统。冷冻水、热水、冷却水供应分别采用三套泵，各三台，两用一备。卫生间设置机械排风系统，直接排到室外；地下室设置排风与排烟兼用系统，选用双速风机，平时排风，火灾时排烟。关键词空调；风机盘管；螺杆式冷水机组；锅炉；防排烟ⅡAbstractThisdesignationisairconditioningofEnvironmentalProtectionBureofficebuildinginGuangzhoucity.Theconstructionasasixlayerofthemultilayerbuilding，haveonelayerundergroundand6floorsontheground。Thetotalareasoftheconstructionis5946squaremeters,theareaofairconditioningis3720squaremeters.Thecoolingloadofthebuildingis495.95KW,coolingloadindicatoris83w/m2,theheatloadis258.66kW,heatloadindicatoris43w/m2byloadcalculate.Thebuildingincludestheoffice,conferenceroom,largemeetingroom。Thedesignofalltheroomsareuseofthefancoilunitsplusfreshairsystem.Theoutdooraircanbeintroducedfromoutside,itbeprocessedtotheenthalpyofindoorair,thefleshairhandingunitonlyundertakesthecoolingloadofoutdoorairandthepartialmoistureloadofoutdoorair,butthefan-coilunitundertakesthecompletecoolingloadofindoorandthepartialmoistureofoutdoorair.Forthechoiceofcoldandheatsources,WechoosetwoLSLGF300screwtypewaterchillersystem,thesinglerefrigeratingcapacityis324KW,andchoosetwoCWNSO.1.5gasboiler,theSingleheatis150KWasthesourceoftheconstructiontomeettheneedsofcoldandheatload.Watersystemadoptstwo-pipesystem,divide2areas,adoptsdifferentformulaofwatersystem.Condenserwaterpumpis3sets,twouse,onebackup.Theguestbathroomadoptsindependentmechanicalexhaustsystem,isdirectlydischargedtotheoutside;Abasementestablishesthemechanicalsystemofsmokeextractionandairextraction,selectsthedoublefastaxialfan,usuallyexracteindoorair,whenthefire,usetoexractsmoke.Keywords:airconditioning；fancoilunits；screwtypewaterchiller；theboiler；Smokecontrolandsmokeextraction目录摘要ABSTRACT第1章工程概况················································································································I1.1工程概述···················································································································11.2维护结构基本材料···································································································11.3室内外空气计算参数·······························································································1第2章负荷的计算···········································································································32.1夏季冷负荷的计算···································································································32.1.1外围护结构冷负荷的计算方法·······································································32.1.2室内热源散热引起的冷负荷计算···································································52.1.3计算举例···········································································································62.1.4冷负荷汇总·······································································································92.2冬季建筑的热负荷···································································································92.2.1计算举例···········································································································92.2.2热负荷汇总·····································································································10第3章空调系统的论述·································································································113.1空调方案的确定·····································································································113.1.1空调方案概述·································································································113.1.2风机盘管加新风系统的特点·········································································113.2风机盘管的选型计算·····························································································113.2.1风机盘管加新风系统夏季处理过程计算·····················································113.2.2风机盘管的选型·····························································································133.2.3风机盘管的校核·····························································································133.3新风处理机组的选择·····························································································143.3.1计算举例·········································································································143.3.2机组的选择·····································································································14第4章气流组织计算·····································································································164.1概述·························································································································164.2散流器送风气流组织的计算·················································································164.3计算举例································································································