Analysis Of Discharge Characteristics Research Articles

Analysis of Discharge Characteristics and Fire Risk of Mobile Phone Batteries according to the Concentration of Salt Water

The process of discharging batteries using salt water, when used for the disposal of a lithium-ion (Li-ion) batteries, is likely to cause a fire. However, there is a dearth of studies in the literature on the risk of fire while discharging mobile phone batteries in salt water. In order to investigate the possibility of fire by elucidating the discharge characteristics and the generation of heat, we conducted experiments by varying the concentration of the salt water, number of overlapping batteries, and type of the mobile phone batteries used as experimental specimen. The discharging voltage and the temperature of the batteries were measured, and the fire risk was predicted by analyzing the data. The results of the experiment showed that the higher the salt water concentration, the greater the discharge value of the mobile phone battery and the higher the exothermic temperature. Moreover, the exothermic temperatures of the overlapping batteries were higher than that of the single battery submerged in salt water. The highest exothermic temperature points of the battery occurred at the positive and negative poles.

输电线路绝缘子污秽放电特性分析

输电线路绝缘子污秽放电特性分析

Analysis of Discharge Characteristics of Typical Rural Domestic Wastewater along the Tuojiang River

Environmental pollution caused by rural domestic wastewater has become increasingly serious. However, data on the current characteristics of rural domestic wastewater are scarce. In this study, we selected typical villages along the Tuojiang River as study objects. We analyzed the pollution status and discharge characteristics of rural domestic wastewater along the Tuojiang River through field research in winter and summer. Data analysis and collection, as well as water monitoring, were performed to determine the water quality and quantity characteristics of the rural domestic wastewater. The per capita daily discharges of rural domestic wastewater along the Tuojiang River are 11.26–50.37 L in winter and 18.39–303.57 L in summer. Both the maximum and average concentrations of pollutants in the rural domestic wastewater are higher than those in urban domestic wastewater, but the per capita daily discharge of pollutants is clearly lower in rural areas than in urban areas. The analysis of the typical discharges of rural domestic wastewater along the Tuojiang River provides a valuable reference for rural wastewater discharge treatment planning and process selection.

Surface treatment of glass and poly(dimethylsiloxane) using atmospheric-pressure plasma jet and analysis of discharge characteristics

An atmospheric-pressure plasma jet source based on dielectric barrier discharge (DBD) was prepared for the hydrophilic surface treatment of poly(dimethylsiloxane) (PDMS). Discharge characteristics were investigated from intensified charge coupled device (ICCD) images and by optical emission spectroscopy (OES). Different optical emission profiles were observed in plasmas with argon (Ar) and helium (He) feed gases. For Ar plasma, OH and N2 related emission lines are dominant. On the other hand, relatively strong peaks of N2+ and O excited species were observed in He plasma, suggesting that a metastable He atom plays an important role in the downstream plasma region. Ar plasma was further found to be more effective than He plasma for hydrophilic surface modification. The surface reverted to being hydrophobic about 40 h after plasma irradiation.

Theoretical and Numerical Analysis of Discharge Characteristics in Pulsed Electromagnetic Accelerators

Discharge is critical physical process in pulsed electromagnetic accelerators for arc plasma jet device, and its characteristics directly determines the accelerator performance. The mechanisms of discharge plasma and flow in the accelerator are analyzed by magnetohydrodynamics (MHD). The model is coupled with electric circuit model based on weakly nonideal plasma conductivity and ablation model. Calculation results show that there is some nonideal plasma region which has important effects on electrical conductivity; most ablated gases are ionized at the half cycle of the discharge time and are accelerated by Lorentz force to high exhaust velocity; electrical conductivity, plasma temperature and density are increasing with discharge energy unleashed, and gradually reduce in the post-discharge.

P‐96: Analysis of Discharge Characteristics on 50‐in. Full HD, 50‐in. HD, and 42‐in. HD PDP Cells using Vt Close‐Curve

AbstractTo investigate the discharge characteristics such as a firing voltage and wall voltage condition by the conventional driving waveform in the ultra fine AC‐PDP cells, the Vt close‐curves are measured. Using the shape and shift of the Vt close curves measured from the various PDP cell sizes such as 50‐in. full HD, 50‐in. HD, and 42‐in. HD grades, the discharge characteristics are analyzed in detail.

Hydrological and hydrogeochemical methods for the delineation of complex groundwater flow systems as evidenced in the Bet-Shean Valley, Israel

The Bet-Shean Valley (Northern Israel) is the base level of groundwater draining from three regional aquifers. In the natural undisturbed state, i.e. at the beginning of the six-ties, groundwater drained through many springs with widely different chemical composition and with a total discharge of about 135 million m 3. For the efficient utilization of water resources, it was decided to recover groundwater from wells at the cost of a considerable reduction of spring discharges. Since the sequence and the rate of spring-decay diverged from the pattern that had been predicted, it became necessary to delineate aquifers and their connections to the various springs. Three groups of methods were employed for this purpose: (a) analysis of discharge characteristics and their relation to source aquifers; (b) methods for the identification of well fields that affect the discharge of a particular spring; and (c) hydrogeochemical methods for the delineation of flow paths. The paper presents the relevant data, the methods employed and the results that were achieved. The utility and the limitations of the various methods were discussed and general guidelines for the delineation of groundwater flow in multi-aquifer systems were formulated.