ASHRAE Handbook98.R06si CONTROL OF MOISTURE AND OTHER

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1、CHAPTER6CONTROLOFMOISTUREANDOTHERCONTAMINANTSINREFRIGERANTSYSTEMSMoisture.........................................................................................................................................6.1OtherContaminants.................................................................

2、......................................................6.6RefrigerantRecovery,Recycling,andReclamation......................................................................6.8SystemCleanupProcedureAfterHermeticMotorBurnout........................................................6.11ContaminantCon

3、trolDuringRetrofit..........................................................................................6.12THISchaptercoversthefollowingtopics:(1)controlofmois-Iceorsolidhydrateseparatesfromrefrigerantsifthewatercon-ture,whichisanimportantanduniversalcontaminantincentrationishighenoughandt

4、hetemperaturelowenough.Solidrefrigerationsystems;(2)controlofothercontaminantsinrefrig-hydrate,acomplexmoleculeofrefrigerantandwater,canformaterationsystems;(3)recovery,recycling,andreclamationoftemperatureshigherthanthoserequiredtoseparateice.Liquidrefrigerants;(4)serviceprocedurestypicallyuse

5、dincleaningawaterformsattemperaturesabovethoserequiredtoseparateiceorrefrigerationsystemfollowingahermeticmotorburnout;and(5)solidhydrate.Iceformsduringrefrigerantevaporationwhentherel-controlofcontaminantsduringretrofittoalternativerefrigerants.ativesaturationofvaporreaches100%attemperaturesof

6、0°Corbelow.MOISTURETheseparationofwaterasiceorliquidalsoisrelatedtothesol-ubilityofwaterinarefrigerant.ThissolubilityvariesfordifferentTheamountofmoistureinarefrigerantsystemmustbekeptrefrigerantsandwithtemperature(seeTable1).Variousinvestiga-belowanallowablemaximumtoprovidesatisfactoryoperatio

7、n.torshaveobtaineddifferentresultsonwatersolubilityinR-134aMoisturemustberemovedfromcomponentsduringmanufactureandR-123.Thedatapresentedherearethebestavailable.Theandassemblytominimizetheamountofmoistureinthecompletedgreaterthesol