The calculation of the entropy (S) for gases is essential for design process equipments which involve the calculation of the heat and work requirements for industrial processes.Prediction of accurate values of residual entropy (SR) is necessary step for the calculation of the entropy.
This research deals with experimental study of the rheological behavior of polymer solutions, solid suspension and the effect of adding polymers to solid suspensions. All polymers studied in this work are water soluble and used in industries as a rheology control additive (rheology modifiers), these are: CMC-Carboxymethyl cellulose, XCXanthan Gum, HEC-Hydroxyethyl cellulose and PVA-polyvinyl alcohol.
The prediction of latent heat of vaporization of pure compounds has at least sixteen methods to predict the latent heat of vaporization for pure compounds and three methods to predict the latent heat of vaporization for binary mixtures .All these methods has been evaluated in this work.There are at least nine methods available in literature for prediction of latent heat of vaporization at any temperature using either vapor pressure data or the law of corresponding states .These methods predict the latent heat of vaporization at various temperatures directly.
A theoretical study was performed to analyze the heat transfer and momentum in co-current annular, gas-liquid (air-water), two phase turbulent flow conditions in horizontal pipe using finite difference
There are many different correlations available in the literature applied to predict saturated liquid molar volumes for pure compounds. They are Rackett, Spencer and Danner, Yamada and Gunn, Yen Woods, Bradford and Thodos, Reidel, and Hankinson Thomson equations. The investigation of these empirical correlations shows that the best correlation was Hankinson and Thomson equation (HT) for nonpolar and
The present work is concerned with the study of the mechanisms of gasification reactions to produce biogas by the gasification of coal and algae, and co-gasification of coal-algae and coal-grape seeds in a spouted fluidized bed gasifier under ifferent operating conditions.
The present work is an attempt for gaining some experimental data to investigate the effect of pipe diameter and roughness on drag reduction properties. Experiments were carried out in galvanized steel pipes whose nominal diameters were 12.7, 19.05, 31.75 and 50.8 mm (0.5, 0.75, 1.25 and 2 inches) respectively and in smooth polyvinyl chloride (PVC) pipe with 19.05 mm diameter.
The experimental study was primary designed to evaluate the effectiveness of various additive types as drag-reducer agents, both in the single and binary mixed forms. Since a comparison between more than one additives type, especially between water soluble polymers and suspended particles are rare in literature.
For the increasing importance of corrosion in all branches of recent life, a study on behavior of widely industrial metals (zinc, iron and copper) in deaerated hydrochloric acid is presented in this thesis. This work was developed to predict the corrosion rate and corrosion potentials of binary and ternary metal system to investigate and discuss the effect of temperature, concentration and area fraction of metals on the corrosion rate and corrosion potential. Metals used were iron, copper and zinc.
A theoretical study was carried out to analyze the corrosion of iron pipe and iron rotating cylinder in aerated hydrochloric acid using mixed potential theory equations under turbulent flow of Reynolds number of 5000, 10000,20000, 40000, and 60000, temperature of 25 °C, 40 °C, and 60 °C, and pH 1,2, and 4. The theoretical investigation included: the effect of Reynolds number, temperature, pH, relative roughness (e/d), and heat flux on corrosion rate and corrosion potential.