A simple simulation using SIMULINK is presented to model the thermal/control behaviour of a domestic gas boiler. The simulation was the first step in a research programme to investigate the efficacy of control using an oxygen sensor. A brief review of boiler control is used to outline current practice and research developments. Ratio control in several forms has been investigated. Performance i...

Thermal measurements in energy engineering are a rather complex matter. Many physical quantities cannot be measured directly. They must be calculated making use of algorithms basing on the results of direct measurements. Any measurement is always an inaccurate operation. A measure of the inaccuracy of measurements is the uncertainty of this measurement defined as a parameter characterizing the ...

Abstract The article is devoted to the analysis of methods utilization and processing oil sludge. advantages disadvantages thermal, biological, chemical, physical combined disposal are considered in detail. It concluded that it necessary use an integrated approach obtain a more effective result involve oil-containing waste recycling order minimize anthropogenic impact on environment. one promis...

Lignite from Mae Moh mine is the largest source of solid fuel for electricity generation in Thailand. It is used in pulverized coal-fired boilers of a 2400 MW thermal power plant. Its high CaO content in ash is a major concern that can affect severe slagging. In this paper, potential of slag occurrence in the power plant was investigated by numerical simulation. The FactSage thermochemical pack...

www.worldpumps.com 0262 1762/08 © 2008 Elsevier Ltd. All rights reserved Effective simulations to ensure optimal performance and correctly predict the hydraulic and thermomechanical behaviour of today’s huge boiler feed water pumps are a challenge for engineers and constructors. Generally, boiler feed water pumps are subjected to extreme mechanical and thermal stresses because of their huge siz...

Condensing boilers use waste heat from flue gases to pre-heat cold water entering the boiler. Flue gases are condensed into liquid form, thus recovering their latent heat of vaporization, which results in as much as 10%–12% increase in efficiency. Modeling these heat transfer phenomena is crucial to control this equipment. Despite the many approaches to the condensing boiler modeling, the follo...

Silicone based oil is heated in the boiler of the diffusion pump and the vaporized oil rises in the central tower and streams out of directional flutes directed downward in the pump throat. This allows air molecules to dissolve in the gaseous oil (gas dissolved in gas). As the oil-air mixture cools (due to water cooling coils wrapped around the pump throat) the oil condenses and returns to liqu...

The pilot-scale NOx and SOx simultaneous removal from boiler emission was performed using radical injection and chemical hybrid process. The radical injection is often called as indirect plasma (or remote plasma) and air radicals are produced at room temperature with less than 1/10 of the flue gas flow rate. The flue gas from the boiler was in the range of 450~1,470 Nm/hr, the gas temperature o...

considering that once-through benson boiler is one of the most crucial equipment of a thermal power plant, occurrence of any fault in its different parts can lead to decrease of the performance of system, and even may cause system damage and endanger the human life. in this paper, due to the high complexity of the system's dynamic equations, we utilized data-based method for diagnosing the faul...

The research aims to design and construct a new mixed vertical boiler (fire tube – water tube) with three gas passes. strength of this technological innovation is in the best use thermic transmission receiving fluid (hot water, steam, thermal oil), due its multipurpose function steps using alternative fuels (Diesel, Liquid Petroleum Gas LPG, natural gas), by improving efficiency temperature red...