The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Since the Vreman subgrid-scale model was proposed, different types of flow fields have been used to research the applicability of this model. However, the applicability of the model to a flashover heat flow field simulation and the optimal model coefficient for room fires have not been reported. In this paper, the flashover room fire experiments of different opening sizes (ventilation factor) are...
Thanks to its large carrying capacity, excellent insulation property and high mechanical strength, PTFE insulated tubular busbar has been used in a broad range of applications in power station that covers the voltage level from 0.4 kV to 220 kV in China. PTFE has been found to be exposed to a great risk of partial discharge (PD) erosion which is generated due to the presence of defect within the insulation...
Temperature has a direct effect on the operation of electrical devices. To meet the demands of the smart grid, which needs to apply the control, sensing and communication technology into the power system [1], it is indispensable to design the on-line monitoring system for temperature measurement. In this system, digital temperature sensors are employed to obtain the temperature value of the under-test...
XLPE films were employed as test samples to investigate the effect of cross-linking temperature on space charge decay behavior. The samples were cross-linked with temperature ranged from 150°C to 180°C in thickness of 200 μm. Corona charging method was employed to introduce charges on sample surface, after which open-circuit decay test was carried out at 35°C with relative humidity of ~ 45%. Surface...
In this paper, room temperature vulcanized (RTV) silicone rubber (SiR) was employed as test sample to investigate the relationship between electrical tree propagation characteristics and the experiment temperature. Both the structures and growth characteristics of electrical tree in SiR were observed by using a digital camera and a microscope system. Obtained results show that electrical tree in RTV...
Numerical simulations of a clean room were conducted by software FDS5.3 using large-eddy simulation (LES). A computational fluid dynamics (CFD) model was first verified by comparing computational results with results of reduced scale clean room fire tests. The temperature near the ceiling round the fire location with three sizes acetone liquid fire were then studied for a typical full-scale clean...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.