The effects of illumination during anodic etching of porous Si have been studied. For a fixed current density and anodization time, it has been observed that below a critical irradiance level, increasing the radiant flux density during anodization results in higher photoluminescence and a blue shift of the photoluminescence spectra. For irradiance above the critical value, the photoluminescence...

The advantages in performance and emissions from combustion within the voids of a porous material, as compared to those conventional open-flame combustion, have motivated numerous studies understand harness connection between underlying structure topology desired system-level properties. current study examines feasibility additively manufactured complex ceramic structures with geometric functio...

This paper deals with the hydrodynamic and thermal analysis of a new type of porous heat exchanger (PHE). This system operates based on energy conversion between gas enthalpy and thermal radiation. The proposed PHE has one high temperature (HT) and two heat recovery (HR1 and HR2) sections. In HT section, the enthalpy of flowing high temperature gas flow that is converted to thermal radiation em...

The following issues are considered: the role of hot heel in scrap melting by electric arcs in the furnace freeboard; advantages and disadvantages of furnaces with a single charging and those with a telescoping shell; Specifics of furnace scrap hampering its heating by burners. The possibilities of using different types of burners for scrap heating are analyzed including stationary burners and ...

The present work reports the development of a multi-scale model to predict and control drying behavior coated substrate under infrared (IR) radiant burners. accounts for simultaneous heat mass transfer in liquid film layer, characterized by binary polymer-solvent solution. developed works with two distinguished scales, micro(coating film)- macro(oven)-scale, which are connected an iterative two...

Thermal performance of three different types of liquefied petroleum gas (LPG) domestic cooking burners, i.e. a conventional radial flow, a vertical flow and a swirling flow were analyzed by means of Particle Image Velocimetry (PIV). PI V diagnostics can explain the burners’ performance from their corresponding flow fields at an impingement area. With the difference of flow patterns, larger atta...

Self-recuperative burners are a common solution for efficient combustion systems in industrial furnaces. Due to the geometric complexity of recuperators, detailed CFD simulation is computationally expensive and not feasible models burner-integrated such as radiant tubes. Especially FSI studies tubes, temperature tube surrounding burner decisive final results. The exclusion recuperator from intr...