ASHRAE Handbook98.R07si LUBRICANTS IN REFRIGERANT SYSTEMS

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1、CHAPTER7LUBRICANTSINREFRIGERANTSYSTEMSTestsforBoundaryLubrication................................................7.1WaxSeparation(FlocTests)...................................................7.15RefrigerationLubricantRequirements.....................................7.2Solubility

2、ofHydrocarbonGases............................................7.19MineralOilComposition..........................................................7.2SolubilityofWaterinLubricants............................................7.19ComponentCharacteristics..............................

3、........................7.3SolubilityofAirinLubricants.................................................7.20SyntheticLubricants.................................................................7.3FoamingandAntifoamAgents................................................7.20Lubricant

4、Additives...................................................................7.4OxidationResistance...............................................................7.20LubricantProperties.................................................................7.4ChemicalStability..........

5、.........................................................7.20Lubricant-RefrigerantSolutions...............................................7.8ConversionfromCFCRefrigerantsLubricantReturnfromEvaporators.......................................7.14toOtherRefrigerants.................

6、..........................................7.23THEprimaryfunctionofalubricantistoreducefrictionandcorrosion,whicharethefourmajorsources(eithersingularlyorminimizewear.Alubricantachievesthisbyinterposingafilmtogether)ofrapidwearunderboundaryconditions.Theslightlybetweenmovingsurfa

7、cesthatreducesdirectsolid-to-solidcontactactiveconstituentsleftincommerciallyrefinedmineraloilsgiveorlowersthecoefficientoffriction.themtheirnaturalfilm-formingproperties.UnderstandingtheroleofalubricantrequiresananalysisoftheAdditiveshavealsobeendevelopedtoimprovelubricationsur

8、facestobelubricated.Whilebearingsurfacesandothe