• Tensile tests with prior overheating on Waspaloy were performed utilizing precise temperature controlling capability of electro-thermal mechanical testing system. Overheating at 1000 °C a cooling rate 50 K/s severely decreased tensile properties 700 °C. Significant dissolution precipitates is the reason property loss. Sufficient re-precipitation and growth for can occur during slower 1 K/s. M...

About ten hydroelectric power plants realized from 1970 to 1990 in Romania are confronted with stator overheating. The developed mathematical model analyzes the voltage stability based on modal analysis of Jacobian matrix, identifying hazardous modes variation between and flow rate, correlated characteristics analyzed generators their response these variations. Vulnerable elements system for in...

High-rise buildings with a large proportion of transparent areas, where conventional external overheating protection cannot be used due to the wind loads, are often problematic from an energetic and comfort point of view. In this paper a glass façade system is examined, which controls the energy flows within the transparent building envelope. Two fluid-filled layers are implemented in a glass f...

Open circuit voltage of a silicon solar cell is around 0.6V. A solar module is constructed by connecting a number of cells in series to get a practically usable voltage. Partial shading of a Solar Photovoltaic Module (SPM) is one of the main causes of overheating of shaded cells and reduced energy yield of the module. The present work is a study of harmful effects of partial shading on the perf...

Dye-sensitized solar cells have been tested before, during, and after stress tests performed either under intense Xe-lamp illumination (equivalent to 1 sun up to 2.5 sun) or under thermal cycles between room T and 80 C. In-situ emission spectra and transient photovoltage decay curves have been taken to monitor the cell aging conditions. Incipient degradation phenomena in aged cells can be detec...

Persistent corneal edema is one of the complications of phacoemulsification. Five patients underwent this procedure 6 to 8 months before keratoplasty was performed. In addition to bullous keratopathy, two corneas had corneal scarring due to probe overheating or corneal vascularization of the anterior chamber. Electron microscopy of corneal specimens showed that four cases had Fuch's dystrophy w...

Propagating fingerlike patterns in type-II superconductors are studied through a boundary layer model that takes into account the coupling with the temperature of the sample. By formulating an approach based on an interfacial description for a domain of vortices, we determine the shape-preserving fronts and study the properties and scale of the patterns, such as the fingers’ shape and width. We...