Partial discharges result in cable line faults that can occur defective insulation systems made of rubber, polyethylene, XLPE, and flexible PVC. Insulation defects may due to disruptions their production process, installation, operational conditions. Therefore, the diagnostic monitoring partial discharge occurrence help prevent emergencies damaged sections. registration is a non-destructive met...

Carbon nanotubes (CNTs) are considered the most promising candidates to replace Cu and Al in a large number of electrical, mechanical and thermal applications. Although most CNT industrial applications require macro and micro size CNT fiber assemblies, several techniques to make conducting CNT fibers, threads, yarns and ropes have been reported to this day, and improvement of their electrical a...

Abstract—Solar water heating is a thermodynamic process of heating water using sunlight with the help of solar water heater. Thus, solar water heater is a device used to harness solar energy. In this paper, a modified solar water heating system (MSWHS) has been proposed over flat plate collector (FPC) and Evacuated tube collector (ETC). The modifications include selection of materials other tha...

An analysis of the strati®cation decay in thermally strati®ed vertical cylindrical cool storage systems is presented using a one dimensional conjugate heat conduction model. The degree of thermal strati®cation depends upon the length to diameter ratio, wall thickness to length ratio, the thermo-physical properties of the material of the storage tank, the type and thickness of the insulation and...

The engineers who built the massive external fuel tank that will power the shuttle Discovery into orbit used sophisticated X-ray detectors developed by UF researchers to reduce the chance of a defect in the foam insulation covering the tank. The detectors, first invented as a new technology to find land mines, can identify tiny gaps, or air-filled voids, in the insulating foam without causing a...

Standard practice in response surface methodology performs factor screening and response surface exploration sequentially, using different designs. A novel approach is proposed to achieve the two objectives on the same experiment, based on one design. Running a uni-stage experiment has the advantages of saving experimentation time and run size. The approach is based on a two-stage analysis that...