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 & Circuit breaker. The organization has 27959 authors who have published 38036 publications receiving 523387 citations.

Plant maintenance with predictive diagnostics

Abstract: An integrated information system is provided for a plant with interactive processes running in functional equipment subsets, such as a nuclear power generation plant. Sensors are operatively coupled to monitor processes and equipment in the plant, collecting sample data for assessing operational conditions and for predicting maintenance requirements based on loading of the equipment. One or more processors access the sample data and compares present conditions to diagnostic specifications, technical specifications and historical data stored in memory and indexed to equipment subsets and functional operating groups. The processor(s) generate prioritized reports to alert users to potential operational and/or maintenance problems. In addition to the prioritized reports, the processor accesses and outputs to the users reports of the diagnostic and technical specifications applicable to the process parameters exhibiting the potential problems. These specifications are provided in successive levels of detail and are cross referenced between related processes and related items of equipment. The information system integrates operations, maintenance, engineering and management interests in a common database of information via network-coupled data terminals.

Coal gasification and hydrogen production system and method

Abstract: A system and method generates electricity and co-produces a hydrogen flow from coal The electricity is generated by a turbine with a topping combustor and a solid oxide fuel cell ("SOFC") reacting syngas The syngas is produced in a coal gasifier with a portion of the compressed air from the turbine, coal, and steam Prior to the syngas being delivered to the topping combustor and the SOFC, it is cleaned and a portion of the hydrogen in the syngas is removed to form the hydrogen flow Additionally, a vitiated air flow from the SOFC is directed to the topping combustor and another portion of the compressed air from the turbine directed to the SOFC after it is heated with the turbine exhaust An aspect of the invention varies the amount of electricity generated and the volume of hydrogen co-produced based upon the demand of electricity and/or the demand of said hydrogen

Experiments on liquid jet instability

Abstract: The capillary instability of vertical liquid jets of different viscosities have been examined by imposing audio-frequency disturbances. Real time sequences of photographs allow a direct measurement of growth rates of disturbances of various wavelengths. Results show that in general non-linear effects dominate the growth processes. This is in agreement with Yuen's analysis. The growth rate of the difference between the neck and the swell, however, agrees well with the linearized analysis of Rayleigh and Chandrasekhar. The non-linear effect causes a liquid jet to disintegrate into drops with ligaments in between. The sizes of the ligaments decrease with increasing wave-number. The subsequent roll up of the ligament into droplet, the eventual coalescing of the droplet with the main drop and drop oscillation have also been studied.

Ionic Conductivity of Cubic Solid Solutions in the System CaO—Y2O3—ZrO2

Abstract: The ionic conductivity of cubic solid solutions in the system CaO -Y2O3-ZrO2 was examined Particular Y2O3-ZrO2 binary compositions were more conductive at elevated temperatures (>600°C) than either CaO-ZrO2 binary or CaO-Y2O3-ZrO2 ternary compositions The higher ionic conductivity appears to be related to a lower activation energy rather than to the number of oxygen vacancies dictated by composition Those compositions of highest conductivity lie close to the cubic-monoclinic solid-solution phase boundary Conductivity-temperature data are presented that indicate a reversible order-disorder transition for Y2O3-ZrO2 cubic solid solutions containing 20 and 25 mole % Y2O3 The transference number for the oxygen ion at 1000°C for Y2O2-ZrO2 cubic solid solutions is greater than 099