The significance of the dielectric constant of a mixture

The above review of the experimental data on the dielectric constants of mixtures shows that the dielectric constant of a mixture cannot in general be calculated from the dielectric constants of the components.     

Recent dielectric constant theory and its relation to problems of electrical insulation

There has been indicated the importance of a knowledge of the chemical and capillary structures of insulating materials if electrical energy losses in them are to be explained.It has been demonstrated that there are available, first, methods by which the structures of their simpler molecules may be determined, second, methods by which the sizes and shapes of their aggregates may be approximated, and third, methods by which it may be expected that something may be learned concerning the size, form and arrangement of their capillaries. In certain cases these methods have been given in some detail, while in others they have only been mentioned. Their nature and the importance of their solution make them deserving of every attention the chemist and physicist can devote to them.     

精制松香工艺优化及精馏装置设计

松脂中含有松节油和松香,通过水蒸气精馏、减压水蒸气精馏可以分离出松节油,得到松香。松香再通过减压精馏,即可生产精制松香。精制松香的生产设备正是基于这个原理进行研制的,其主要由精馏塔、降膜式列管再沸器和釜液循环管路等构成。设计的装置生产的精制松香得率≥92%,色泽(加纳色号)12,软化点≥78℃,酸值≥181。     

林化专业松香酯实验的改革与创新

针对原有松香酯实验出现的新情况,结合工业生产实际,提出创新性松香酯实验改革思路,并通过本科学生对实验改革的开展,探讨实验的效果与意义。     

基于EDSA的海上油气田联网电力系统计算分析

本文以EDSA电气计算软件为基础,以锦州25-1区域电站联网项目为例,介绍联网项目电力系统分析中所需要特别关注的潮流计算和短路计算,对计算过程中所需要考虑的工况进行逐一梳理,通过各种工况对计算分析过程中所需要注意的重要问题进行剖析,提出需要注意的关键事项,确认最佳运行方式。     

水电厂防止油劣化的措施分析

本文在分析水电站油劣化带来的危害及油劣化原因的基础上，提出了防止油劣化的一些有较强针对性的措施建议。