METHOD FOR DETERMINING MEAN RADIATION FROM BURNING BED OF FURNACE AND COMBUSTION- PROCESS CONTROL UNIT Russian patent published in 2000 - IPC

FIELD: power engineering. SUBSTANCE: mean radiation from certain area of burning bed in furnace is determined by aiming at this area infrared photographic camera 22 equipped with appropriate flame filter enabling its functioning at minimum of distorting radiation flame 24a so that distorting radiation is eliminated to greatest extent. In order to eliminate, in addition, radiation from solid moving particulates and thereby enabling measurement of temperature of burning bed 22, the latter is photographed by means of camera 22 in short intervals and then pictures are interpreted in special device. Calculations of mean radiation or mean temperature include only sub-areas of surface area which do not suffer changes and, hence, may be generally assumed to belong to burning bed considered as fixed bed while varying radiation results of other sub-areas should be considered to be caused by radiation of solid moving particulates such as those of pulverized fuel and soot, which distort burning-bed temperature measurement results. EFFECT: provision for eliminating distortions due to gases contained in combustion products, solid particulates, soot, etc. 9 cl, 6 dwg