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Time planning and costing of of a biogas plant construction project in a livestock farm for flexible electricity production.

Gratsonis Aristeidis

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Summary

This thesis examines the critical aspect of time management in the construction of a biogas plant. Biogas as a main renewable energy source can contribute significantly to meeting energy needs but also to addressing environmental problems, at a time when the climate crisis and the meeting of growing energy needs pose a significant challenge. Effective construction and management of biogas production facilities is therefore critical to achieving these goals.In this study, two time scheduling methods, CPM (Critical path method) and PERT (Program Evaluation Review Technique) are used for the time scheduling of the proposed construction project of a 240KW biogas production plant in Uhrusk province, Poland under normal conditions, but also in conditions of uncertainty. The plant aims to utilize animal waste from the area, and more specifically from the university farm in Uhrusk, with the possibility of flexible electricity production through the storage of the produced biogas. Initially, for the theoretical part of the research, an extensive literature review was done on time planning methods, project management, the process of anaerobic digestion, different waste treatment methods and the necessity of projects aimed at sustainability and sustainable development. The research part of the research contains the network analysis and the two time planning methodologies CPM and PERT, which were used to realize the time management of the construction process of the project consisting of 75 activities. These activities concern construction, personnel and procedures and the possible duration of each process was given by a company implementing similar projects.Subsequently, the appropriate calculations were carried out in the excel program, according to which it was found that, regarding the CPM method, the minimum completion time was determined at 97 weeks, while regarding the PERT method, at 113,5 weeks. Then, from the time interval given by the PERT method, using a normal distribution, the probability of completing the project within 113,5 ± 10 weeks was calculated.In conclusion, the commenting and quoting of the conclusions of the study was carried out. Taking into account the analysis as well as the results of the case study this research attempts to enrich the already existing literature and aims to provide the know-how for the optimization and development of similar biogas production facilities.

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