Westinghouse Electric

About: Westinghouse Electric is a company organization based out in Cranberry Township, Pennsylvania, United States. It is known for research contribution in the topics: Brake & Signal. The organization has 27959 authors who have published 38036 publications receiving 523387 citations.

Alternating current dynamoelectric machine

Abstract: This invention relates generally to alternatingcurrent dynamoelectric machines and more particularly to such machines without a commutated armature. While the invention is of general application, it is especially adapted to fractional porsepower motors and generators having power outputs in...

Direct contact heat exchanger with phase change of working fluid

Abstract: A direct contact thermal storage heat exchanger which utilizes the liquid-vapor phase change of a working fluid within the heat exchanger, and energy generation systems incorporating the heat exchanger. The heat exchanger is particularly useful in combination with a solar energy receiver. The heat exchanger includes an insulated pressure vessel packed with pebbles or spheres. Working fluid in the vapor phase from a solar heat source enters the unit and condenses, transferring thermal energy to the pebbles. The liquid level of working fluid about the pebbles is decreased during this mode of operation. When it is desirable to release this stored energy the liquid level is increased, and the energy is transferred to the working fluid which forms a vapor, and can be used to drive a turbine or other prime movers.

Sintering and Grain‐Growth Kinetics of MgAl2O4

Abstract: The sintering and grain-growth kinetics of finely divided MgAl2O4 were determined from 1300° to 1600°C for densities up to 96% of theoretical. These results show that sintering is governed by volume diffusion and that the temperature dependence of the diffusivities is 157 exp [(-118 kcal/mol)/RT] cm2/s. Grain growth follows the expression (G2-G02)=Kt, where K=51.3 exp [(-110 kcal/mol)/RT] cm2/s.

Cycle monitoring method and apparatus

Abstract: The present invention is a cycle monitoring system and method that acquires, logs and analyzes analog and/or digital signals from component sensors in a process control plant such as a nuclear power plant. The system continuously monitors the sensors and records steady-state and transient phenomena. Compression of the data is performed to reduce storage load. The compression ratio for transient data is driven by a threshold indicating a measurement signficant to stress determination. Transient data is retained at a higher sampling rate, so that the parameters of transient such as the maximum value can be determined for stress analysis. The stress analysis determines pressure and thermal stresses which are used to calculate a usage factor which indicates the stress age and thus the remaining life of a component. The system provides estimates of fatigue accumulation associated with selected locations of critical power plant components. Measurements of plant process and response parameters are used to provide data for calculation of fatigue accumulation. The system includes a computer containing a database that includes thresholds and response characteristics of the plant components to varying types of stress. The process required to calculate fatigue for monitored components and locations uses Duhamels integral to calculate transient stress, combines the transient stress with other stresses to produce a usage factor from stress ranges designating when a stress cycle has occurred. The system can be used to plan routine maintenance, repair and replacement decision, and to justify alternative plant operation modes and life extension.