The phenomenon of scaling is a type of fouling typically observed in heat exchangers, steam generators and cooling systems. It is caused by the interaction of chemical species dissolved in the water to form inorganic salts. The most common species which bring about the formation of scales are calcium and sodium-based compounds. The solubility of […]
A Few Corrections To Avoid Hideout Effects Read More »
In cooling towers, the heat is rejected by the partial evaporation of water as it flows through the unit. The evaporation will bring along a rapid concentration of the chemical species naturally dissolved in the water. The principal scale found in cooling towers is calcium carbonate which comes from the decomposition of calcium bicarbonate. This
Cooling Towers Blowdown Systems Read More »
Failures in the execution of commissioning activities, like chemical cleaning or steam blowing, can go unseen for the first several months of operation, but they have the potential cause a direct impact in the performance of a power plant. This article presents the problems experienced in a CSP Solar Power Plant, due to damages in
Commissioning Failures VS Plant Performance Read More »
A sudden change in a fluid cross-section area provokes a dynamic condition in which water pressure drops sharply below its boiling point and produces instant vaporization. Since this process is adiabatic, there is no exchange of heat with its surroundings, therefore, the total enthalpy remains the same. Consequently, most of the water molecules will absorb
Chemical Corrosion Damage in Adiabatic Expansions Read More »
[vc_row][vc_column][vc_custom_heading text=\”HRSG Preheater Simulation\” use_theme_fonts=\”yes\”][vc_custom_heading text=\”Purpose\” font_container=\”tag:h3|text_align:left\” use_theme_fonts=\”yes\”][vc_column_text]A computational fluid dynamic simulation was carried out to study the effects of the flue gases velocity in the last stage modules of a HRSG preheater. The results allows us to visualize a map of temperature in a preheater module, hence, to better understand how energy is distributed.
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[vc_row][vc_column][vc_custom_heading text=\”Ineffective Chemical Cleaning?\” use_theme_fonts=\”yes\”][vc_custom_heading text=\”Introduction\” font_container=\”tag:h3|text_align:left\” use_theme_fonts=\”yes\”][vc_column_text] Ineffective chemical cleaning? Not really… we have encountered situations where engineers and operators complaint about the cleanliness of the boiler as they see a black liquid coming off the blowdown system during first fire. It´s not difficult to get carried away by a first impression and put
Ineffective Cleaning? Read More »
