第二章制冷与低温工质的性质

2Propertiesofrefrigerationandcryogenicworkingsubstances2.5WidelyusedOrdinaryrefrigerants2.6Secondaryrefrigerantsandcoldstoragematerials2.7Refrigerantsandlubricantoil第二章制冷与低温工质的性质第五节常用的制冷工质第六节载冷剂与蓄冷剂第七节制冷剂与润滑油2.6Secondaryrefrigerantsandcoldstoragematerials2.6.1Secondaryrefrigerants2.6.2Coldstoragematerials2.6.3Eutectic(mixedcrystal)2.6.4Selectionofsecondaryrefrigerantsandcoldstoragesubstances第六节载冷剂与蓄冷剂一、载冷剂二、蓄冷剂三、共晶体（混晶）四、载冷剂与蓄冷剂的选用原则3/11/202332.6.1Secondaryrefrigerants

一、载冷剂SecondaryrefrigerantsSecondaryrefrigerants3/11/202342.6.1Secondaryrefrigerants

一、载冷剂Absorbents吸收剂WorkingsubstancesCoolants冷媒Refrigerants制冷剂Secondaryrefrigerants3/11/202352.6.1Secondaryrefrigerants

一、载冷剂PuresubstancesSecondaryrefrigerantsSolutionsWaterSaltwaterAirRefrigerantsAlcoholeGlycol3/11/202362.6.2Coldstoragematerials

二、蓄冷剂Waterice水冰ColdstoragematerialsEutecticice共晶冰R134a+R7183/11/202372.6.3Eutectic(mixedcrystal)

三、共晶体（混晶）MNEFGLSABDCC1C2l1l2Tωα+Lβ+Lβαα+β

凝聚体系：不包含气相时的平衡体系。Nf＝1＋Nc－NpNf＝23/11/202382.6.4Selectionofsecondaryrefrigerantsandcoldstoragesubstances

四、载冷剂与蓄冷剂的选用原则Principle：AchievingGoalatminimumcost

2.7Refrigerantsandlubricantoil2.7.1Classificationoflubricantoil2.7.2Solubilityoflubricantoil2.7.3Selectionoflubricantoils第七节制冷剂与润滑油一、润滑油的分类二、溶油性三、润滑油的选用原则3/11/2023102.7.1Classificationoflubricantoil

一、润滑油的分类Mineraloil矿物油Lubricantoil润滑油

Syntheticoil合成油R600aR12R134aR7173/11/2023112.7.2Solubilityoflubricantoil

二、溶油性CompletesolubleSolubilityoflubricantoilPartialsolubleIn-solubleR600a+MineraloilR134a+MineraloilR22+Mineraloil3/11/2023122.7.2Solubilityoflubricantoil

二、溶油性Partialsolublel1l2R12R22+MineraloilOilR22油水3/11