This thesis paper deals with studying the thermodynamic properties of local distilled Ethiopian Areki which extracted from Maize, Dagussa (Sorghum) and Gibto (Lupin). The process of the work basically contains measurements and a formulation of fundamental equation for the thermodynamic properties of Areki in the liquid states and also design model and testing for increasing ethanol concentration during distillation. The formulation has been investigated for single-phase states between temperature ranges 288 to 333 K at constant atmospheric pressure. The formulation includes a thermodynamic property measurement, its fundamental equation and numerical regression functions. The experimental data have been used to determine the fundamental thermodynamic property equations include temperature, specific heat capacity. This study also contains comparisons between experimental data and values computed using the fundamental equation to verify the uncertainties in the calculated properties. The residuals which formed between experimental and theoretical data have been analyzed within 95% confidence band. The maximum deviations 0.0816, 0.0707, 0.07792, 0.07776 and 0.07577% are observed for Areki samples of dagim Maize, dagim Sorghum, terra Sorghum, terra Maize and dagim Lupin, respectively. The percentage volume composition of ethanol content and its PH value of the different species of Areki have been determined. Sigma plot v10 is used to linear regression fitting curve for determination of ethanol concentration and formulation of theoretical equation of specific heat capacity in all samples. Also the most important work of this thesis paper is increasing ethanol concentration in local distillation Areki for energy production, industrial and medical applications. Increasing ethanol concentration during distillation is achieved by condensing part of water from evaporates of ethanol water mixture and returning it to distilling pot by concentric tube heat exchanger. The maximum ethanol concentration during distillation is found that 84.6% and 49.5% distilling by prototype and commercial apparatus, respectively. Finally, the results of all thermodynamic properties and ethanol concentration for distillation of designed model have been summarized and analyzed with tabulation and graphically.