A New Model of Radiative Image Formation Used in Visualization of 3-D Temperature Distributions in Large-Scale Furnaces

Estimation of radiative properties and temperature distributions in coal-fired boiler furnaces by a portable image processing system

“…where A 0 is matrix coefficient and related with the installation and imaging parameters of the image detectors, and the radiative properties of medium [14]. A decoupled reconstruction method combining optimization methodology and regularization methodology was proposed to simultaneously reconstruct the temperature distribution and the averaged absorption and scattering coefficient of medium [15].…”

“…In order to simultaneously reconstruct the temperature distribution and the radiative properties (absorption coefficient j and scattering coefficient r) of the particulate medium in furnaces from radiative images, a radiative temperature imaging model was proposed to relate flame temperature image T m with the temperature distribution T in the furnace as below [14] T…”

Decoupled Reconstruction Method for Simultaneous Estimation of Temperatures and Radiative Properties in a One-Dimensional, Gray, Participating Medium

“…. ; T 4 TC;2M Þ T ; and the relationship between matrixes A and A 0 was also given in [21]. As shown in Eq.…”

“…Then the temperature image T TC on the boundary is further related to the temperature distribution T in the system by a radiative temperature imaging model, which has been described in [21], as follows:…”

Assessment of Regularized Reconstruction of Three-Dimensional Temperature Distributions in Large-Scale Furnaces

“…Under the condition that the radiative properties are given, Li et al [6][7][8], Siewert et al [9,10], and Liu et al [11,12] have reconstructed temperature profiles in plane-parallel, cylindrical, and rectangular media by inverse radiative analysis from the radiative intensities exiting the boundaries, respectively. Zhou et al have proposed radiative imaging models [13,14], which established a liner relationship between 3-D temperature distributions in furnaces and radiative temperature images captured by CCD cameras, and then the 3-D temperature distributions can be reconstructed by the Tikhonov regularization method [15]. The reliability of the method also has been proved in experimental investigations on visualization of 2-D and 3-D temperature distributions inside pulverized coal-fired furnaces [16,17].…”