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Pinacolyl alcohol, dimethylamine, isopropanol, thiodiglycol and triethanolamine are the precursors to chemical warfare agents, so it is necessary to indentify these chemical warfare agent precursors in situ. The cataluminescence spectra of five chemical warfare agent precursors are compared. The results show that it is possible to use the difference of the CTL spectra of the substances to identify...
In this paper, a micro vacuum pirani gauge made of single crystal silicon has been developed and its temperature and DC current response properties in different pressures were firstly studied detailedly. The resistance of it increases with the temperature exponentially. There is a current threshold resulting from the materials characteristics and the precision of the instrument at low pressure. And...
Because of its high-capacity, low losses and no electromagnetic interference, the gas-insulated transmission line (GIL), which is a replacement of an overhead line in special environments, has been used for over 40 years, mainly as bus ducts of gas-insulated substations or underground connections in power plants. The insulated and cooling gas in GIL is mainly SF6 or its mixtures, which have high global...
The YZ4105 diesel engine cylinder liner was analyzed by using of finite element analysis software ANSYS. Taking into account the basis contacts of various components, this paper calculated the stress and displacement distribution of cylinder liner under the function of heat - coupled structure, and provided a reference for improving a design.
Measurement technique for natural ventilation rate cannot support the building's own ventilation potential. Therefore, it is necessary to find a simpler, feasible and precise field-measurement technique. This paper presents the feasibility of using an "artificial airflow passage" to measure the air rate through one outlet, which changes the "random" airflow into "regular"...
SF6 gas has been widely used currently in electric power systems, such as GIS, GIL and GIT. However, because of the high global warming potential (GWP), SF6 was listed as one of the six restricted gases in "Kyoto Protocol" in 1997. Some fluorocarbon gases with low environmental effect and high dielectric performance are studied as the substitution candidates for SF6. This paper presents...
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