M.Sc.

 Because of the practical importance of analyzing and controlling the systems arises the need to study the frequency response analysis for any system of several industrial plants. The frequency response used for the studies of dynamic characteristics of chemical processes and control loops in the present work. The process control implemented for different control strategies and compare between them by using frequency response techniques.

      Experimental work is carried out to find the minimum value of freezing point that can be obtained for Ethylene Glycol – water solution. 5% wt. of methanol is added to the Ethylene glycol – water solution to investigate its effect on freezing temperature.The experiments also included determination of boiling temperature of Ethylene Glycol – water solution with and without methanol at different ethylene glycol concentrations from 0 to 100 weight per cent at temperature 20°C and 1 atmosphere pressure.

          This work presents the study of single phase fluid flow through a packed bed, where two type of fluids were used (air and water). Spherical glass particles were used as solid phase, the glass spheres were 0.9987, 0.7955, 0.6015, 0.509, 0.4210 cm in diameter. The bed was 7.64 cm in diameter and 15.15 cm in length.Many variables were studied in this packed bed.