This paper presents some of the results of the modeling and simulation of an industrial furnace under the conventional combustion as well as under the highly preheated and diluted air combustion (HPDAC) conditions. The results are obtained using a computer program written by authors in FORTRAN language. It was found that, the HPDAC offers a more uniform and relatively moderate gas temperature p...

Nuclear fuel cycle workers are exposed to a variety of hazardous materials. Uranium processing is one of the stages of the nuclear fuel cycle and, together with uranium underground mining, employs the largest number of workers, with much smaller groups of workers involved in uranium enrichment and reprocessing and reactor operation. To date, epidemiological studies of uranium underground miners...

Presently, LWR (light-water reactor) fuel cladding (tube) is made from Zr-base alloys (e.g., Zircaloy). However, in steam at temperatures above 1000 K (727 °C), these alloys oxidize rapidly, stripping oxygen from water molecules and producing hydrogen, which may cause explosion. Moreover, Zr-base alloys are prone to GTRF (“grid-to-rod” fretting) failure, in which flowinduced vibration of fuel r...

reduction of exhaust emissions is a major research task in diesel engine development in view of increasing concerns regarding environmental protection and stringent exhaust gas regulations. simultaneousreduction of nox emissions and particulate matter is quite difficult due to the soot/nox trade-off and isoften accompanied by fuel consumption penalties. towards this aim, automotive engineers ha...

Gas turbines are being utilized in a variety of applications (electric power production, jet engines, etc.) Modern power turbines have the highest operating efficiencies and turn out the fewest pollutants among major combustion energy converting devices. The power generation industry is faced with increasingly stringent emissions requirements for ozone precursors, such as nitrogen oxides and ca...

This paper discusses the design and development of moderate and intense low oxygen dilution (MILD) combustion burners, including details of the computational fluid dynamics process, step-by-step from designing the model until post-processing. A 40 mm diameter bluff-body burner was used as the flame stabilizer. The fuel nozzle was placed in the center with a diameter of 1mm and an annular air no...

This letter describes a method for forming Ru nanoclusters on oxide anode surfaces during the initial stages of solid oxide fuel cell operation, ielding improved anode performance without additional processing steps. Transmission electron microscope and X-ray photoelectron spectroscopy ◦ bservations showed that Ru nanoclusters precipitated onto La0.8Sr0.2Cr0.82Ru0.18O3−δ surfaces after exposure...