Effect of Oils on Kinematic Viscosity of R134a
スポンサーリンク
概要
- 論文の詳細を見る
The kinematic viscosity defined as a ratio of viscosity to density is one of the key properties in producing technically important dimensionless numbers such as Prandtl and Reynolds numbers. We measured both viscosity and density of R134a/POE and R134a/PAG mixtures at saturation in the range of relatively low oilconcentrations. The density measurements for oil-concentrations up to 50 mass% were conducted with a densimeter making use of glass buoys within overall uncertainty of ±1.0%, and the viscosity measurements for oil-concentrations up to 16 mass% were carried out with an oscillating-cup viscometer making use of polarizer with overall uncertainty less than ±3.5%. The kinematic viscosities obtained from the experimental viscosity and density data are presented for both R134a/POE and R134a/PAG mixtures in the range of temperatures from 278 K to 288 K for oil-concentrations up to 15 mass%. The oil-concentration dependence of the kinematic viscosity for both mixtures is also reported.
- 公益社団法人 日本冷凍空調学会の論文
公益社団法人 日本冷凍空調学会 | 論文
- 液滴の過冷却凝固について:-食塩水溶液-
- 水‐油エマルションを用いた氷蓄熱のための容器内撹はん製氷 臨界表面張力の小さな壁面材質の熱抵抗が製氷過程に与える影響について:臨界表面張力の小さな壁面材質の熱抵抗が製氷過程に与える影響について
- 水‐油エマルションを用いた氷蓄熱のための容器内撹はん製氷 エマルションの組成が製氷過程に与える影響について:(エマルションの組成が製氷過程に与える影響について)
- クロスフィンチューブ熱交換器におけるフィンカラー形状が伝熱性能に及ぼす影響
- マイクロガスタービン・固体酸化物形燃料電池複合発電による分散エネルギーシステムの性能解析と最適運用計画