International Journal for Multidisciplinary Research (IJFMR) E-ISSN: 2582-2160 ● Website: www.ijfmr.com ● Email: editor@ijfmr.com IJFMR23069727 Volume 5, Issue 6, November-December 2023 1 Comparison Between Calculated, Simulated and Actual Plant Data of Multiple Effect Evaporators to Concentrate Sugarcane Juice Mortada H.A. Elhesain 1 , Elzubier A. Salih 2 , Abdel Moneim Osman A. Babiker 3 , Mohammed M. Widatalla 4 , Mohammed M. Bukhari 5 1,3,4 Food Processing Engineering Department, Faculty of Engineering and Technical Studies, University of El Imam El Mahdi, Kosti - Sudan. 2 Faculty of Engineering and Technology, University of Gezira. 5 Department of Chemical Engineering, Faculty of Engineering and Technical Studies, University of El Imam El Mahdi, Kosti, Sudan. ABSTRACT Multiple effect evaporators systems operating at steady state can be described by a series of nonlinear algebraic equations that include total and solute mass balances, energy balances, heat transfer rate equations, and the composition and temperature dependence of related thermodynamic properties such as vapor pressures and enthalpies. The main objective is to compare between the manual calculations, simulation and real data collected from Asalaya plant for validation the best design of multiple effect evaporators system in forward feed used in Asalaya Sugar Factory. In this design a short tube vertical evaporator, Calandria type has been used. The models include overall equations of materials balance, equations of energy balance and equations of heat transfer rate for measurement area for all the effects. These equations were solved using manual calculations methods and MATLAB coded program. The results of the present investigations have been compared with the data obtained from the Asalaya Sugar Factory with five evaporators. The results showed that the concentration of sugar cane juice at the final stage is equal to 60 Brix for the manual calculations, simulation and actual plant data with zero error. The temperature of solution in the pre- effect evaporator was found to be about (114.94, 114.94, 115)ºC, with a relative error equal to 0.05% and the steam temperature in the pre effect was found about (120)ºC for the manual calculations, simulation and actual plant data, with zero error. The area and number of tubes in the (pre, second, third and fourth) effect, are in a good agreement, with the standard value (Er=3.26%). The above results show great similarity with the real behavior of evaporator unit. This can be used as a reliable tool\for the simulation of different operating conditions. Key words: Multiple Effect Evaporators, Sugarcane Juice, Simulation, Calculation, Comparison. 1. INTRODUCTION: Evaporation is a typical technique used in a unit operation to extract solvent as a vapor. (Kemal et al., 2017). Essentially, an evaporator is a heat exchanger that uses vapor to boil a liquid and create