Fe-2.25Cr-1Mo a widely used material for headers and steam tubes of boilers. Welding of steam tube to header is required for production of boiler. Heat affected zone of the weld can have poor mechanical properties and poor corrosion behavior leading to weld failure. The cost of material used for steam tube and header of boiler should be controlled. This study propose a new materials design for ...

NOx emission characteristics and overall heat loss model for a 300MW coal-fired boiler were established by Back Propagation (BP) neural network, by which the the functional relationship between outputs (NOx emissions & overall heat loss of the boiler) and inputs (operational parameters of the boiler) of a coal-fired boiler can be predicted. A number of field test data from a full-scale operatin...

The economizers are used for production of steam heating on en route ships. The economizers are producing steam in a heat exchange process from the ship’s main engine exhaust gas. Products of the incomplete combustion of the heavy fuel oil remaining in engines, passing the boiler, collect on the heat exchange surface of the economizer. When the incorrect assumptions are made for the boiler oper...

Abstract One of the most critical factors affecting boiler efficiency and hazardous-gas-emission reduction is volume excess air mixed with fuel. A knowledge-based approach proposed to model a 320-MW natural-gas-fired steam power plant in Isfahan, Iran by applying fuzzy-modelling techniques control efficiency. This based on fuel entering boiler. First, fuzzy-model structure identified fuzzy rule...

The availability of biomass in India is about 120150 million MT per annum corresponding to potential of 16,000 MW. Multifuel fired biomass boiler design will enable latest technology up gradation in biomass and will have many advantages. This paper deals with technology analysis and multifuel fired biomass boiler design. Keywords-Biomass, Multi-fuel, biofuels, boiler, design

In current power station boilers, fuel burns at a low temperature, which results in exergy efficiency. This research combined the second law of t with boiler structure to maximize efficiency 350 MW plant boiler. A three-dimensional simulation combustion process is performed. one-dimensional model then constructed calculate loss, heat transfer and Under principle high-temperature air technologie...

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...

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...