ABSTRACT
Analysis of steady-state operation of double effect evaporator and prediction were made on the process of sodium hydroxide solution. 1. Double effect distillation and thermal integration applied to the ethanol production process. The ethanol production process was simulated using Aspen Plus® software. The process included double effect distillation technology which achieved the reduction in the steam consumption. The study assessed the double effect distillation in ethanol production process, and its impact on energy consumption and electricity surplus production in the cogeneration system. The economic assessment was also done based on equipment cost. As a result, the reduction in steam consumption was calculated. Figures: process flow diagrams of conventional and double effect processes steam consumption and cost. 2. Prediction of energetic and exergetic performance of double effect absorption system. The topic was about solar double effect absorption system. The performance of double effect absorption system was analyzed and optimized using a computer program which has been developed by Engineering Equation Solver software to describe the mathematical model of the used absorption system. Also, the study predicted the Coefficient of Performance (COP) and exergetic efficiency of the system, and formulated them in equations as
a Double Effect Evaporator. The commercial double effect tomato paste evaporator was simulated using ACSL. Feed flow rate and product solids concentration from the simulation were compared with the experimental measurements. 7. Dynamic Response of a Double Effect Evaporator. A simple mathematical model was built with unsteady state material and energy balances. Agreement achieved between experimental response of the evaporator and the predicted response.
