| 1. | ( 5 ) the experiment on the condensation resistance characteristics of hc290 - oil mixture shows the oil concentration has negligible effect on the pressure drop of the mixture
( 5 ) hc290含油混合物微肋管内凝结过程阻力性能实验表明，润滑油浓度的增加对混合物凝结压降影响不大。 |
| 2. | 2 . the investigation on the condensation heat transfer characteristics in a horizontal micro - fin tube for hc600a - oil mixture shows : a . the condensation heat transfer coefficient of the mixture increases with the increasing of the mass flux
2 、关于hc600a含油混合物水平微肋管内的冷凝换热特性的研究表明：混合物微肋管内冷凝平均换热系数随着质量流率的增加而增加。 |
| 3. | ( 2 ) the investigation on the condensation heat transfer characteristics in a horizontal micro - fin tube for hc290 - oil mixture shows : a ) the condensation heat transfer coefficient of the mixture increases with the increasing of the mass flux
( 2 )关于hc290含油混合物水平微肋管内的冷凝换热特性的研究表明： a )随着质量流率的增加，混合物微肋管内冷凝平均换热系数增加。 |
| 4. | The investigation on the evaporation heat transfer characteristics in a horizontal micro - fin tube for r290 - 3gs mixture shows : a ) the average evaporation heat transfer coefficient of the mixture increase with the increasing of the mass flux
R290含油混合物在水平微肋管内流动沸腾换热特性的实验研究表明： a )随着质量流率的增加，含油混合物微肋管内的沸腾平均换热系数增加。 |
| 5. | We make a theoretical analysis of the experimental results and draw some conclusions as follows : the saturated temperature r290 - oil mixture is higher than that of pure r290 at a same pressure . the temperature difference , which is called superheat temperature of refrigerant - oil mixtures , increases as the oil concentration and the vapor quality are increased at a certain saturated pressure and pressure has negligible effect on the superheat temperature of the mixture . ( oil concentration is 0 . 43 ? - 5 . 28 ? )
并根据实验结果进行理论计算，得出以下结论：天然制冷剂r290含油混合物的饱和温度高于相同压力下纯工质的饱和温度，这个温度差，也就是本文中提到的所谓制冷剂含油混合物的过热温度随混合物质量含气率、含油浓度的增加而增加，而饱和压力对过热温度的影响不大(含油率0 . 43 ? - 5 . 28 ? ) 。 |
| 6. | The conclusions reached are as follows : 1 . the saturated temperature of refrigerant - oil mixture is higher than that of pure refrigerant at a same pressure . the temperature difference , which is called superheat temperature of refrigerant - oil mixture , increases as the oil concentration and the vapor quality are increased at a certain saturated pressure and pressure has negligible effect on the superheat temperature of the mixture
得出以下结论： 1 、相同压力下，制冷剂hc600a含油混合物的饱和温度高于纯工质的饱和温度，这个温度差，在就是文中称为的制冷剂含油混合物的过热温度，它随混合物质量含汽率、含油浓度的增加而增加，而饱和压力对过热温度的影响不大。 |
| 7. | On the basis of the investigation on the related literature of new refrigerant substitutes , the in - tube condensation of refrigerant and refrigerant - oil mixtures , this paper investigates the saturated temperature of hc290 - oil mixtures , condensation heat transfer and pressure drop characteristics in a horizontal micro - fin tube for it
本文在分析研究国内外有关替代工质、制冷工质及其含油混合物管内凝结性能研究现状的基础上，对纯天然工质丙烷( hc290 )与润滑油suniso3gs的混合物饱和温度、水平微肋管内凝结过程的传热及流阻特性进行了实验研究分析。 |
| 8. | The conclusions reached are as follows : ( 1 ) the saturated temperature of refrigerant - oil mixture is higher than that of pure refrigerant at a same pressure . the temperature difference , which is called superheat temperature of refrigerant - oil mixture , increases as the oil concentration and the vapor quality are increased at a certain saturated pressure and pressure has negligible effect on the superheat temperature of the mixture
得出以下结论： ( 1 )制冷剂hc290含油混合物的饱和温度高于相同压力下纯工质的饱和温度，这个温度差，也就是文中所谓的制冷剂含油混合物的过热温度随混合物质量含汽率、含油浓度的增加而增加，而饱和压力对过热温度的影响不大。 |
| 9. | ( 3 ) the saturated temperature of refrigerant - oil mixture has different definitions because of the superheat temperature of the mixture . one is the real saturated temperature of the mixture and the other is the saturated temperature of pure refrigerant corresponding to the tested pressure of the mixture . in this paper , the heat transfer coefficients based on the two different saturated temperatures are compared and the results showed the latter is larger
( 3 )由于制冷剂含油混合物过热温度的存在，使其具有两种不同的饱和温度定义，一种是所测实际温度，另一种是所测压力对应纯工质的饱和温度，文中就这两种饱和温度定义下的冷凝平均换热系数进行了比较，发现后者大于前者。 |
