This work aims to study the phenomenon of scaling observed in the hot water pipelines in the southern seaside touristic installations of Agadir city. This phenomenon has led to the formation of solid deposits and adhe...This work aims to study the phenomenon of scaling observed in the hot water pipelines in the southern seaside touristic installations of Agadir city. This phenomenon has led to the formation of solid deposits and adherents to the internal walls of the facilities of the hot water. This deposit is at the origin of several technical, economic and environmental problems. It causes a decrease in the lifetime of boilers and a reduction of thermal exchanges and consequently a decrease in the energy efficiency of heating systems. In the present study, the samples of scale have been carried out at different points of hot water pipelines. The characterization of different scale samples recovered was conducted by X-ray fluorescence (XRF), elemental analysis (CHNS-O), infrared spectrometry (IR), thermogravimetric analysis (TGA), differential thermal analysis (DTA), X-ray diffraction (XRD) and scanning electron microscopy (SEM). Analytical results showed that scale samples collected on different sites in touristic hot water system are mostly formed by calcium carbonate. Thermodynamic conditions in the site were favourable to the aragonite variety formation.展开更多
The phenomenon of scaling is particularly observed in the regions of Morocco which exploit groundwater. The region of Tiznit uses these waters, partly, for its domestic and industrial needs. The major problem of the u...The phenomenon of scaling is particularly observed in the regions of Morocco which exploit groundwater. The region of Tiznit uses these waters, partly, for its domestic and industrial needs. The major problem of the use of this water is, besides its medium quality, the clogging of the pipes. The aim of this work is to study the phenomenon of water scaling in Tiznit region using the means of thermodynamic and kinetic analyses. The physicochemical analysis of this region’s waters shows that their contents of calcium and magnesium are very high. The hydrometric title is situated between 18°F and 64°F. The alkalinity varies from 22°F to 82°F. The classification of waters of this region for assessing the risk of clogging, according to their hardness, shows that 80% of these waters are hard waters. The kinetic characterization of scaling power of drinking water in this region was conducted using the method LCGE which also proved the scaling character of these waters.展开更多
文摘This work aims to study the phenomenon of scaling observed in the hot water pipelines in the southern seaside touristic installations of Agadir city. This phenomenon has led to the formation of solid deposits and adherents to the internal walls of the facilities of the hot water. This deposit is at the origin of several technical, economic and environmental problems. It causes a decrease in the lifetime of boilers and a reduction of thermal exchanges and consequently a decrease in the energy efficiency of heating systems. In the present study, the samples of scale have been carried out at different points of hot water pipelines. The characterization of different scale samples recovered was conducted by X-ray fluorescence (XRF), elemental analysis (CHNS-O), infrared spectrometry (IR), thermogravimetric analysis (TGA), differential thermal analysis (DTA), X-ray diffraction (XRD) and scanning electron microscopy (SEM). Analytical results showed that scale samples collected on different sites in touristic hot water system are mostly formed by calcium carbonate. Thermodynamic conditions in the site were favourable to the aragonite variety formation.
文摘The phenomenon of scaling is particularly observed in the regions of Morocco which exploit groundwater. The region of Tiznit uses these waters, partly, for its domestic and industrial needs. The major problem of the use of this water is, besides its medium quality, the clogging of the pipes. The aim of this work is to study the phenomenon of water scaling in Tiznit region using the means of thermodynamic and kinetic analyses. The physicochemical analysis of this region’s waters shows that their contents of calcium and magnesium are very high. The hydrometric title is situated between 18°F and 64°F. The alkalinity varies from 22°F to 82°F. The classification of waters of this region for assessing the risk of clogging, according to their hardness, shows that 80% of these waters are hard waters. The kinetic characterization of scaling power of drinking water in this region was conducted using the method LCGE which also proved the scaling character of these waters.
