Articles

Thermal Conductivity, Density and Calorific Value of Sargassum Fluitans and Sargassum Natans Species

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In this study, we obtained the values of the thermodynamic properties of sargassum that includes S. fluitans and S. natans species, which are the ones that most arrive at the coasts of the Mexican Caribbean. The sargassum samples, collected at the coast, were dried in a direct type of solar dryer and their final relative humidity was 15% dry base. Two physical models were designed to construct biscuits of 0.0127 m in diameter and 0.0063 m in length, which were used to obtain the density and calorific value and those used for thermal conductivity, were 0.069 m in diameter and 0.008 m thick. The density resulted in . To determine the calorific value, a commercial calorimetric pump was used, and the value obtained was . For thermal conductivity, a device that employs the hot plate and guard method was designed and built and its value was . These values indicate that it is possible to use dehydrated sargassum to produce energy, which has approximately a value of 75% of that obtained for sugar cane bagasse. With these three values and using the thermal diffusivity definition equation, this last parameter was calculated in

Density and Ultrasonic Study of Benzene Sulphonyl Chloride with Hydrocarbon at 303.15 K.

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Experimental values of  Ultrasonic velocity and density for the binary mixture of   Benzene Sulphonyl Chloride with Hydrocarbons have been measured at 303.15 K over the entire mole fraction range, using these data the excess Adiabatic compressibility (βsE) and excess Free length (Lf E) have been calculated. These parameter were used to study the nature and extent of intermolecular interaction between component molecules, present in binary mixture.  excess value of Adiabatic compressibility (βsE), sound velocity (UE ) and free length(Lf E) were plotted against the mole fraction of  Benzene Sulphonyl Chloride over the whole composition range the value of  βsE, UE, Lf E for these three binary mixture have been found to be negative, the non linear variation of these parameter show the presence of interaction and their excess value is indicative of interaction between the components molecule in all system.