欢迎来到天天文库
浏览记录
ID:39283661
大小:4.54 MB
页数:66页
时间:2019-06-29
《空调制冷系统组成》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、制冷系统组成Vapor-CompressionRefrigerationexpansiondevicecondensercompressorevaporator第一部分制冷循环制冷系统组成AB压力焓蒸发制冷循环ACcompressorpressureenthalpyevaporator制冷循环BAcondenserpressureenthalpyevaporator制冷循环BCcompressorDexpansiondeviceADcondenserpressureenthalpyevaporator制冷循环BCcompressor第二部分冷凝器制冷系统组成subcooleroutdoora
2、ircondensercoilpropellerfan风冷式冷凝器ADpressureenthalpyBCEffectofSubcoolingAI{subcoolingrefrigerationeffectDI离心式风扇--风冷式冷凝器centrifugalfancondensercoil蒸发式冷凝器sumppumpcondensercoilrefrigerantvaporsubcoolerfanliquidrefrigerantcoolingwatersubcooled,liquidrefrigerantsubcooler水冷式冷凝器hot,refrigerantvapor29ºC35ºC冷
3、却塔spraysfromcondensertocondensersumppropellerfanoutdoorair29ºC35ºCfill冷凝器控制Condensercapacityisinfluencedby:TemperaturedifferencebetweenrefrigerantandcoolingmediaFlowrateofcoolingmediathroughcondenserFlowrateofrefrigerantthroughcondenserpressureenthalpyfullloadcondenserheatrejectioncapacitypartload
4、fullloadCondenserCapacitypartloadcondenserheatrejectioncapacity冷凝温度控制condenserwaterpumpflow-regulatingvalvecondenser可变冷凝器水流量coolingtowercondenservariable-speeddrivecondensercoolingtowerbypasspipedivertingvalvecoolingtowercondenservariable-speeddrivecondensercoolingtowerbypasspipedivertingvalve可变进水温度
5、condenserbypasspipecoolingtower冷却塔旁通divertingvalve4ºC18ºC13ºC风冷式冷凝器控制heatrejectioncapacitycondenserairflowfanAfanBfanAdamperAB冷凝器溢流控制evaporatorcompressorliquidreceiverBACcondenserexpansionvalvedischargeline第三部分蒸发器制冷系统组成Finned-TubeEvaporatorrefrigerantvaporliquid/vaporrefrigerantairflowTurbulentFlow
6、Finned-TubeEvaporatorliquid/vaporrefrigerantrefrigerantvaporliquiddistributorairflowsuctionheaderSuperheatsuperheat{ACBACBShell-and-TubeEvaporatorrefrigerantvaporchilledwaterreturnchilledwatersupplytubebundlebafflesliquid/vaporrefrigerantShell-and-TubeEvaporatorbafflesEvaporatorControlEvaporatorcapa
7、cityisinfluencedby:TemperaturedifferencebetweenrefrigerantandairorwaterbeingcooledFlowrateofairorwaterthroughevaporatorFlowrateofrefrigerantthroughevaporatorFinned-TubeEvaporatorControlexpansionvalver
此文档下载收益归作者所有