We determine the distribution of heat uxes of a furnace for burning ash via a simulation of a heat transfer problem. With paralleliza-tion of the problem this task can be done faster. Within the volume of the furnace, heat transfer is dominated by radiation, where heat conduction through the walls is important. Our mathematical model leads to a system of polynomials and the problem is reduced t...

This manuscript demonstrates the design, modification and initial investigation of a rotary furnace for the manufacturing of inorganic fullerene WS2 nanoparticles. Different preparation methods starting with various precursors have been investigated, of which the gas-solid reaction starting with WO3 nanoparticles was the most efficient technique. Furthermore, the influence of temperature, react...

The gas-phase chemistry of silicon oxynitridation in N2O has been investigated. From an evaluation of available kinetic data, we have developed a model for the thermal decomposition of gaseous N2O. To quantify heat transfer between the N2O gas and the wall of the furnace, we introduce the concept of referencing to an N2 gas-temperature profile, measured in an oxidation furnace. Using this model...

Nowadays blast furnace operation is supervised by extensive measurements and controlled accordingly. Characteristic indications concerning process quality are given by the analysis of the radial temperature profile in the upper part of the furnace. Optimising this temperature distribution would lead to considerable savings of input material. To achieve an optimisation, quantitative relations be...

A simple mathematical model of an indirect-fired strip annealing furnace for real-time control and optimization purposes is developed. The considered furnace is part of a hot-dip galvanizing line and is used for continuous heat treatment of steel strips. The heat that is released during the combustion process inside the radiant tubes is calculated by means of steady-state mass and enthalpy bala...

An EMTP-based arc furnace model was developed for evaluation of flicker concerns associated with supplying a large integrated steel mill as they go from one to two furnace operation and as system changes are implemented that will affect the short circuit capacity at the 230 kV power supply substation. The model includes a dynamic arc representation which is designed to be characteristic of the ...

In Primorye, a kiln for firing ceramic material was excavated at the Petrovka-5 monument near town of Bolshoy Kamen. The furnace occupied northeastern cape-shaped tip hollow slope. height difference its location 1,35 m. erected on flat area paved with broken bricks and baked clay. had shape truncated circle straight end wall south side north. dimensions structure base are 2 × 2,3 m, long is ori...

By Timothy Michael Sullivan, M.S. Washington State University August 2004 Chair: David F. Bahr The transverse piezoelectric properties of thin piezoelectric films were measured using the rectangular membrane method (RMM) developed at Washington State University. This method was compared with other methods from literature performed at WSU. The measured properties were used to evaluate piezoelect...

We generally investigate a new class of scalar field model with the lagrangian L = F (X) − V (φ). We find that it is the square potential(with a negative minimum) drives the usual linear field solution while in K-essence model the potential should be taken as a inverse square form. The linear field solution model is isomorphic with a special model where its sound speed diverges. We find that ou...

The Moller operators and the asociated Lippman-Schwinger equations obtained from different partitionings of the Hamiltonian for a step-like potential barrier are worked out, compared and related.