Abstract
This paper presents the possibility of forecasting assessments of the speed and the time of formation of depositions in the evaporator-tube elements of double-drum boilers. The values of thermal flow in the wall region of tank screens of boiler furnace are obtained, besides the velocity values of scaling metal corrosion products are obtained. Conclusions about the ability of forecasting unnominal situations and emergency risks dependent with damage to the screen surface heating pipes are made.
Highlights
Water is known to be the most common heat-transport medium in steam boilers
The major disadvantage is that water actively causes corrosion. It results in certain problems when it is used as a heat transport medium, for instance, corrosion of metal of various equipment of the boiler and consequent deterioration of the boiler's reliability
The study is devoted to investigation of the process of scale formation and corrosion of inner heated surfaces since they require special attention
Summary
Water is known to be the most common heat-transport medium in steam boilers. It can be explained by several factors. First of all water possess high values of heat storage capacity, density, heat conductivity and viscosity. All this allows achieving fairly high coefficients of heat exchange. The major disadvantage is that water actively causes corrosion. It results in certain problems when it is used as a heat transport medium, for instance, corrosion of metal of various equipment of the boiler and consequent deterioration of the boiler's reliability. Various impurities present in water including corrosion products can deposit in the inner surface of heated pipes and in some other equipment that will result in the significant reduction of reliability and cost effectiveness of the boiler and even of the steam and water pipes of the whole power plant in general
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