1、2 Properties of refrigeration and cryogenic working substances2.5 Widely used Ordinary refrigerants2.6 Secondary refrigerants and cold storage materials2.7 Refrigerants and lubricant oil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2.6 Secondary refrigerants and cold storage materials2.6.1 Secondar
2、y refrigerants2.6.2 Cold storage materials2.6.3 Eutectic(mixed crystal)2.6.4 Selection of secondary refrigerants and cold storage substances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2/28/202332.6.1 Secondary refrigerants一、载冷剂Secondary refrigerants Secondary refrigerants 2/28/202342.6.1 Secondary r
3、efrigerants一、载冷剂Absorbents吸收剂吸收剂Working substancesCoolants冷媒冷媒Refrigerants制冷剂制冷剂Secondary refrigerants 2/28/202352.6.1 Secondary refrigerants一、载冷剂Pure substancesSecondary refrigerants SolutionsWaterSalt waterAirRefrigerantsAlcoholeGlycol2/28/202362.6.2 Cold storage materials二、蓄冷剂Water ice水冰水冰Cold st
4、orage materialsEutectic ice共晶冰共晶冰R134a+R7182/28/202372.6.3 Eutectic(mixed crystal)三、共晶体（混晶）21llGGicesaltMNEFGLSABDCC1C2l1l2T+L+L+凝聚体系：凝聚体系：不包含气相时的平衡体系。不包含气相时的平衡体系。Nf1NcNpNf22/28/202382.6.4 Selection of secondary refrigerants and cold storage substances四、载冷剂与蓄冷剂的选用原则Principle：Achieving Goal at minimu
5、m cost 2.7 Refrigerants and lubricant oil2.7.1 Classification of lubricant oil 2.7.2 Solubility of lubricant oil 2.7.3 Selection of lubricant oils 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2/28/2023102.7.1 Classification of lubricant oil 一、润滑油的分类Mineral oil矿物油Lubricant oil润滑油 Synthetic oil 合成油R600aR12R134aR
6、717 2/28/2023112.7.2 Solubility of lubricant oil 二、溶油性CompletesolubleSolubility of lubricant oil Partial solubleIn-soluble R600a+Mineral oilR134a+Mineral oilR22+Mineral oil2/28/2023122.7.2 Solubility of lubricant oil 二、溶油性Partial solublel1l2R12R22+Mineral oil2112llGGAAOilR22油油水水2/28/2023132.7.3 Sele
7、ction of lubricant oils三、润滑油的选用原则Principle：Achieving Goal at minimum cost 2/28/202314Homework_6thhGhLr(kJ/kg)R22(EES)414.50236.80177.00R22(Table)413.60236.38177.22R22(Chart)420238178R134a(EES)266.7093.58173.12R134a(Table)414.88241.75173.13R134a(Chart)4152421738.Please try to get the latent heats of R22 and R134a in 30 from EES,their thermodynamic charts and tables,respectively.
