R134A 热力性质
表 1 制冷剂性质 Table1 Refrigerantproperties 制冷剂 R134a R1234yf 混合 1 混合 2 标准沸 点 /℃ -26.07 -29.45 -29.20 -30.71 临界温 度 /℃ 101.1 94.7 96.5 95.4 临界压 力 /MPa 4.05 3.38 3.77 3.40 GGWP 1300 4 573 144 BODP 0 0 0 0 从表 1可以看出,R1234yf的各项热力学性质与 R134a...
Abstract: The performance of a new refrigerant, R1234yf/R134a (with a mass ratio of 89∶11), was studied as alternative to R134a in automotive air conditioning systems using micro-channel heat exchangers. The results show that the cooling capacity of R1234yf/R134a and R134a is similar. ...
An equation of state and tables of thermodynamic properties of R134a in the saturation state and in the one-phase region are obtained in the temperature interval 320–500 K at pressures ranging from 0.01 to 7.5 MPa.doi:10.1007/BF00854368E....
14、 is being regenerated. e-207then cools the r-134a to 40c before p-205 pumps the stream to 28 atm (stream 23) for storage.the distillate from t-202 (stream 19) is then sent to t-203 where hcl and r-23 are removedfrom the refrigerant mixture. the refrigerant mixture obtained as...
R-134a is very attractive as a refrigerant because it has zero ozone depleting potential as well as a low direct global warming potential (GWP). One factor limiting the use of R-134a had been the fact that conventional lubricants are not miscible with R-134a. However, new lubricants have ...
It is a pure refrigerant with an ODP equal to zero and a GWP lower than that of R22 (GWPR22=1700; GWPR134a=1300), as presented in Table 1 [1], [2]. Its saturation pressures are 40% less than those of R22. Although replacement of R12 by R134a for refrigeration has been widely ...
Table 1 Refrigerant blend compositions and selected properties compared to R22 and R502 R22 R502 R417A Blend 79 Composition CHClF 2 R115 / R22 (51.2% / 48.8%) R125 / R134a / R600 (46.1%/50.0%/3.4%) R125 / R134a/R600a (85.1%/11.5%/3.4%) Normal boiling point / ºC -40.8 -45...
3 Block diagram of calculation program for refrigerant vapor-liquid phase mole fraction mixtures’ enthalpy and entropy ·2390 · 化 工 学 报 第 66 卷 时的物性模拟,主要对用于自动复叠制冷系统常见 图 5(b) 是 R32/R134a 气相组分的模拟数据与实验 的二元、三元混合制冷剂进行了热物性的模拟,并 ...
0 文档热度: 文档分类: 行业资料--化学工业 文档标签: 氟化工制冷剂 系统标签: streamtcedepletingrefrigerantdistillaterefrigerants ProductionofR-134a Background Inthe1930’s,chlorofluorocarbons(CFC’s)weredevelopedasasupposedlysafe alternativetoammoniaandsulfurdioxiderefrigerants.Whilesulfurdioxideistoxicandammonia isbo...