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ICS27.200J73JB/T3355－1998离心式冷水机组Centrifugalwater–chillingpakages1998-03-19发布1998-07-01实施中华人民共和国机械工业部发布()I前言1范围····················································································································································································································12引用标准·········································································································································································································13定义····················································································································································································································24型式与基本参数··························································································································································································25技术要求·········································································································································································································36试验方法·········································································································································································································67检验规则·······································································································································································································108标志、包装和贮存··················································································································································································11附录A（提示的附录）机组型号表示方法···································································································································13附录B（提示的附录）允许偏差计算举例····································································································································14附录C（提示的附录）部分负荷温度条件和偏差····················································································································15附录D（提示的附录）综合和应用部分负荷性能系数(IPLV和APLV)的计算·····················································16附录E（提示的附录）噪声测量记录格式和平均声压级计算用诺莫图·····································································17JB/T3355－1998目次()II前言本标准是对JB/T3355—91《离心式冷水机组》进行的修订。本次修订采用了两种名义工况，其中应用规定工况适用于进、出口贸易和技术引进的机组。本标准的附录A、附录B、附录C、附录D和附录E都是提示的附录。本标准从生效之日起，同时代替JB/T3355—91。本标准由机械工业部冷冻设备标准化技术委员会提出并归口。本标准起草单位：重庆通用工业(集团)有限责任公司、机械工业部合肥通用机械研究所。本标准主要起草人：吴鸿兰、韩树衡、任金禄。JB/T3355－199811范围本标准规定了电动机驱动的离心式冷水机组(以下简称机组)的型式、基本参数、技术要求、试验方法、检验规则、标志、包装和贮存等的基本要求。本标准适用于制冷量为348.8kW以上的集中空调或工艺用冷水的机组。同样也适用于为防止因室外气温过低引起冻结，在水中溶解化学添加剂的机组。以发动机(柴油机或燃气机)或透平发动机(蒸汽轮机或燃气轮机)驱动的机组可参照执行。本标准不适用于饮用水、饮料及不以水作载冷剂的工业专用的机组。2引用标准下列标准所包含的条文，通过在本标准中引用而构成为本标准的条文。本标准出版时，所示版本均为有效。所有标准都会被修订，使用本标准的各方应探讨使用下列标准昀新版本的可能性。GB755—87旋转电机基本技术要求GB1032—85三相异步电动机试验方法GB1226—86一般压力表GB1497—85低压电器基本标准GB/T1804—92一般公差线性尺寸的未注公差GB2537—81汽轮机油GB3906—913～35kV交流金属封闭开关设备GB7251—87低压成套开关设备GB7373—87工业用二氟一氯甲烷(F22)GB7778—87制冷剂编号表示方法GB10870—89容积式冷水机组性能试验方法GB/T13306—91标牌GB/T13348—92机电产品包装通用技术条件GB13500—92封闭式制冷压缩机用三相异步电动机通用技术条件GBJ50—83工业循环冷却水处理设计规范JB/T4329—1997容积式冷水(热泵)机组JB4330—86制冷和空调设备噪声声功率级的测定工程法JB/T6411—92暖通、空调用轴流通风机JB/T6719—93制冷装置用压力容器JB/T6918—93制冷用金属与玻璃烧结液位计和视镜JB/T7247—94溴化锂吸收式冷水机组机械工业部1998-03-19批准中华人民共和国机械行业标准离心式冷水机组Centrifugalwater–chillingpakagesJB/T3355－1998代替JB/T3355—911998-07-01实施JB/T3355－19982JB/T7659.2—95氟利昂制冷装置用水冷冷凝器JB/T7659.5—95氟利昂制冷装置翅片式换热器JB/T7666—95制冷和空调设备名义工况一般规定JB/T7771—95制冷用压力、压差控制器ZBJ73022—89单元式空气调节机试验方法ZBJ73025—89制冷机型号编制方法SH0349—92冷冻机油3定义本标准采用下列定义。3.1名义工况性能系数(COP)在标准规定的名义工况下(见表1)，机组制冷量除以总输入电功率得出的比值。3.2应用名义工况性能系数(COP')在标准规定的应用名义工况下(见表1)，机组制冷量除以总输入电功率得出的比值。3.3综合部分负荷性能系数(IPLV)在标准规定的名义工况下(见表4)，按5.6.2所规定的方法计算出的机组部分负荷性能系数。3.4应用部分负荷性能系数(APLV)在应用规定的名义工况下(见表4)，按5.6.2所规定的方法计算出的机组部分负荷性能系数。4型式与基本参数4.1型式4.1.1按制冷压缩机型式分类：——开启式；——封闭式(B)。4.1.2按冷凝侧热交换方式分类：——水冷式；——风冷式(F)；——蒸发冷却式(Z)。注：括号内字母为机组型式代号，无代号者即型号中不表示。4.2型号机组型号的编制方法见附录A(提示的附录)。4.3基本参数4.3.1名义工况机组标准名义工况和应用名义工况的温度条件除按JB/T7666的规定外，还应符合表1的规定。表1名义工况规定条件蒸发器侧冷凝器侧冷水水冷式风冷式蒸发冷却式名称出口温度℃水量m3/(h·kW)进口温度℃水量m3/(h·kW)进口干球温度℃进口湿球温度℃进口干球温度℃进口湿球温度℃标准名义工况70.172300.22435——24应用名义工况6.70.15529.40.19535——23.9JB/T3355－199834.3.2名义工况的其它规定a)水侧污垢系数为0.086m2·℃/kW，空气侧为0.043m2·℃/kW，制冷剂侧为0m2·℃/kW；b)压缩机用电动机电源为三相交流，额定电压分别为380V、6000V和10000V，额定频率为50Hz；c)大气压力为101kPa。4.3.3名义工况时性能系数机组名义工况的性能系数和应用部分负荷性能系数不应低于表2的数值。表2性能系数W/kW制冷量kW名称≤527＞527～1163＞1163名义工况性能系数(COP和COP')380042004700水冷式应用部分负荷性能系数(APLV)390045004800名义工况性能系数(COP和COP')26502400风冷式或蒸发冷却式应用部分负荷性能系数(APLV)275025005技术要求5.1一般规定机组应符合本标准的规定，并按经规定程序批准的图样和技术文件(或按用户和制造厂协议)制造。5.2机组成套设备组成5.2.1由一台或多台离心式单级或多级压缩机组成的压缩机电动机机组，并配有必需的润滑系统。a)封闭式压缩机用电动机：电动机和必需的齿轮传动机构封闭在制冷剂氛围中。b)开启式压缩机用电动机：电动机和必要时配有齿轮和联轴器。5.2.2冷凝器：水冷冷凝器或风冷冷凝器或蒸发冷却式冷凝器。5.2.3蒸发器：制冷剂—水换热器。5.2.4其它配套设备5.2.4.1调节机组制冷量及所需的冷水温度的调节器及控制设备。5.2.4.2满足安全法规规定的有关安全保护或控制设备：——制冷剂高压保护；——油压过低保护(或轴承温度高温保护)；——主电动机异常保护；——冷水防冻结(冷水低温、制冷剂低温和制冷剂低压等)保护；——冷水泵联锁