This paper describes a systematic approach to predict the water level in the drum of a steam boiler with the help of artificial neural networks (ANN). The parameters of the model can be obtained from the physical dimensions and characteristics of the boiler. The frequency of deviations and the degree of deviation of the water level in the drum can be significantly reduced by the ANN modeling of...

includes materials such as waste oil, solvents, and some boiler cleaning fluids which have a heating value. There is at least one boilcleaning product that has a positive heating value. During the boiler cleaning process, the fluid is collected in a temporary storage tank, after the cleaning process is completed it is reinjected into the boiler as essentially an additional heat input to the boi...

As the important signal of once-through boiler's water-fuel ratio control, intermediate point temperature of supercritical boiler plays a key role in the decision of steam and water’s boundary, the match of fuel and water, the control of main steam temperature. The condition of its control directly impacts the once-through boiler’s safety and economy running. For an uncertainty model, a good co...

Major furnace explosions have resulted in the deaths of personnel, extremely expensive repair costs and, in most cases, loss of revenue during the repair period. For a large power station boiler the total cost of a furnace explosion could easily be in the $10M to $20M range. The protection systems fitted to a modern boiler have been developed to the stage where boiler explosions are a rare occu...

This paper describes a prototype instrumentation system for photogrammetric measuring of bed and ash layers, as well as for flying particle detection and pursuit using a single device (CCD) web camera. The system was designed to obtain images of the combustion process in the interior of a domestic boiler. It includes a cooling system, needed because of the high temperatures in the combustion ch...

The fast pyrolysis process is developed to produce liquid bio oil from biomass. In the discussed process the required thermal energy is extracted from a circulating fluidized bed boiler (CFB) as hot sand fed into the pyrolysis reactor. Residual char and uncondensed gases from the pyrolysis process are fed back and combusted in the boiler. Thus, the pyrolysis and the boiler processes are interco...

The rigorous development and veri cation of a boiler system speci cation is presented. Part I shows how the boiler system controller can be developed in a series of elaboration steps in which variables that directly re ect plant conditions are replaced by variables representing sensed, communicated values. Part II shows how the safety of the system can be assessed by rst verifying safety relati...