1.Through these functions of regulation, the refrigerant state parameter of every unit, or the typical unit of refrigerant system can get reasonable value, and the condition of the refrigerant equipment can run safely, steadily, and in efficiently.
通过各种调节作用，使制冷剂状态参数在各部件或制冷系统典型部位具有合理的取值，以满足被控工艺参数的要求以及制冷装置的安全、稳定、高效节能运行。
2.At last, considering the environmental protection and reducing the cost, this paper processes a primary discussion on the question of using a kind of natural refrigerant R600a or some mixing refrigerant to replace the refrigerant R134a.
最后，从环境保护和降低成本的角度出发，本文就SC6350空调系统采用天然工质R600a以及采用价格低、环保性能达标的混合工质MTL-1替代目前使用的“绿色”制冷剂R134a进行了初步的探讨。
3.The research results show that the counter-flow condensers have a better performance than that of other arrangements in single-circuit condensers, and that branch flow should be adopted in multi-rows condensers to decrease the pressure drop and increase the heat transfer capacity, and that the influence of gravity force can not be ignored, and that there must be an optimum refrigerant mass flow which can make the condenser perform best when the air velocity is constant while there must be an optimum air flow which can make the condenser perform best when the refrigerant mass flow is constant.
研究结果表明，单回路冷凝器中，逆流布置换热效果最好，叉流其次，顺流最差；多排管冷凝器应尽可能采用分流方式，以减小压降，增强换热；布置冷凝器流程时，重力的影响不可忽略；当风量不变时，必然存在一最佳制冷剂流量使冷凝器性能达到最佳；当制冷剂流量保持不变时，也相应存在一个最佳风量使冷凝器性能最佳。
4.The mixture refrigerant with HFC-32+HFC-125 has friendly environment, and thermodynamic performances and safety performances, and can be considered as an alternative refrigerant of HCFC-22.But it is very limited for vapor-liquid equilibrium data of HFC-32+HFC-125. Therefore, vapor-liquid equilibrium data are studied based on the theory and accurate experiment.
HFC-32+HFC-125由于具有良好的物性而被作为HCFC-22的替代物。 但是关于混合工质HFC-32+HFC-125的汽液相平衡数据很有限,这阻碍了混合工质在实际应用中的需要。
5.Applies Redlich-Kwong-Soave equation of state to calculate the thermodynamic properties and vapour-liquid equilibrium of the n azeotropic refrigerant mixtures R22/R114 and R13B1/R152a,and azeotropic ones R500 and R502.The results show that the prediction of vapour-liquid equilibrium,bub- ble-point pressures and liquid volumes of non-azeotropic refrigerant mixtures is satisfactory.
应用 Redlich-Kwong-Soave 状态方程对非共沸混合工质 R22/R114、R13B1/R152a 的热力性质及汽液平衡进行了计算,同时还计算了两种共沸混合工质 R500和 R502。 与实验数据的比较表明,汽液平衡、饱和压力和非共沸混合工质的饱和容积都获得了令人满意的结果。
6.For temperatures around 20 K, the development of magnetic refrigerant materials mainly focuses on the garnets with high thermal conductivity, low lattice heat fusion and very low ordering temperatures, for instance: Gd3Ga5O12(GGG),Dy3Al5O12(DAG),Gd3Ga5-xFexO12(GGIG), and Er base magnetic refrigerant materials.
在20K以下温区,磁致冷材料研究主要集中在具有高导热率、低点阵热容和极低有序化温度的石榴石,如Gd3Ga5O12(GGG),Dy3Al5O12(DAG),Gd3Ga5-xFexO12(GGIG)及Er基磁致冷材料;
7.During the present research of the flow characteristics of refrigerant in adiabatic capillary tubes,a drift flux model of two-phase flow was established and the influence of metastable phenomenon was considered.The flow characteristics of refrigerant were analyzed with the program developed in this research.An experimental system for the adiabatic capillary tubes testing was set up.The results show that the theoretical model fits the experimental data well.
在对绝热毛细管内制冷剂的流动特性进行研究的过程中,运用两相流漂移模型,并考虑制冷剂在实际流动中存在的亚稳态,开发了绝热毛细管内制冷剂两相流的数值计算程序,对毛细管内制冷剂的流动特性进行了分析;搭建了毛细管两相流实验装置,并将计算结果与实验数据进行比较,结果吻合的较好。
8.R410A and R407C have been considered as two environmentally benign refrigerant candidates in the world for replacing the ODP refrigerant R22.The character of R410A and R407C was analyzed.
用于取代对臭氧层有破坏作用的制冷剂R22,国际上普遍认同的两种环保制冷剂为:410A和R407C。
9.Considering environment acceptability and refrigeration performance, the refrigerant mixture of HFC32/HFC125/HFC152a proposed by our group has obvious advantages as the refrigerant in domestic air conditioners.
通过对现有替代制冷剂的性能分析,并考虑环境安全性能,认为课题组提出的HFCs混合工质HFC32/HFC125/HFC152a作为家用空调器制冷剂具有非常明显的优点,是潜在的理想环保节能替代制冷剂.
10.The nucleate pool boiling heat transfer performance forR134a/R142b new refrigerant mixtures on plain and machine processed porous tubebundles was discussed in this paper. The rationalization proposal on designing full-liquid Freon refrigerant evaporator was mentioned.
分析和比较了作为CFCs替代物的混合工质R134a/R142b在光滑管和机械加工表面多孔管管束外的沸腾传热性能和管束效应,为氟里昂满液式蒸发器的设计提出了合理的建议。
