This thesis develops a novel resource sharing approach for solving inverse radiant enclosure problems based on distributed construction which is then extended to provide a new controls algorithm for complex energy systems. Specifically, the problem of determining the temperature distribution needed on the heater surfaces to achieve a desired design surface temperature profile is recast as a dis...

Radiant heat flux of fire plume is an essential parameter indicating the hazards a fire. In this work, experiments wall-attached with different aspect ratios were conducted. addition, effect sidewall on mean flame height and radiant rectangular was investigated. The causes decrease in air entrainment; therefore, observed to increase. increased owing increase thermal radiation from heated sidewa...

the present paper compares full kinetics mechanisms in numerical modelling of porous radiant burners (prb), with their reduced forms. the two most frequently used mechanisms of methane combustion (gri3.0 and miller) were selected and their effects were examined on temperature, species concentration, burning speed, and pollutant emission. while the findings of numerical simulation of prb show fi...

the intensity of noise, heat and light were measured in 10 different groups of food processing plants with 3820 employees. noise was measured in 265 working places and if the over-all noise was more than t.l.v. (90dba), the octave band analysis was carried out. effective temperature (e.t) or corrected effective temperature (c.e.t) were measured in 183 working places and air velocity relative hu...

This review encompasses the available practical and experimental data on the ignition of solid wood. Only solid, natural wood is considered, not sawdust, chips, or products that have been treated with fire retardants or other substances, nor is the ignition of living trees. Panel products such as plywood or particleboard have ignition properties very similar to solid wood, so the solid-wood res...

The transition from forward smoldering to flaming in polyurethane foam is observed using indepth thermocouples and ultrasound probing. The experiments are conducted with small parallelepiped samples vertically placed in an upward wind tunnel. Three of the vertical sample sides are maintained at elevated temperature and the fourth is exposed to an upward oxidizer flow and a radiant heat flux. An...

The paper investigates the effects of radiant heat transfer on the viscous reactive flows. The nonlinear governing equations are transformed into nondimensionalised form using some nondimensional variables. Approximate solutions are constructed first, for the governing non-linear boundary value problem before using approximate analytical solution (Adomian Decomposition Method) and the results w...

An algorithm based on the Monte Carlo method is described that permits the precise calculation of radiant emission characteristics of nonisothermal blackbody cavities for use as standard sources in radiometry, photometry, and radiation thermometry. The algorithm is realized for convex axisymmetric specular-diffuse cavities formed by three conical surfaces. The numerical experiments provide esti...