Exergy and Energy Analysis for a Feasibility Trigeneration System at Kocaeli University Umuttepe Campus

Abstract

Abstract In this study, a feasibility of the trigeneration system, which is one of the on-site energy production methods, was prepared for Kocaeli University Umuttepe Campus, and energy and exergy analyses were made for each point of the system and exergy destruction in the lines was found. It is aimed to be able to produce the energy, which is the most basic indicator of sustainability, at the closest point to the consumption place, thus keeping the distribution and transmission losses at a minimum level and dimensioning the designed system. The key point of the gains, losses and efficiency analyses in the lines is presented with engineering calculations based on thermodynamic proofs, exergetic efficiency and losses, the energy and balance equations of the whole system, and the feasibility of the entire trigeneration system, including mathematical modeling, energy analysis, the whole system in II. Law Efficiency, COP, Thermal efficiency were calculated. The seasonal working methods were shown by the numerical analyses prepared in the summer and winter working disciplines of the system effectively and the seasonal working methods were found and the working conditions and operating load values ​​suitable for the current season of the system were found. In addition, by performing separate mathematical models for summer and winter mode, in the light of the above-mentioned technical studies, both the reduction in the energy production costs of the country thanks to the energy that the university will produce in-house, the reduction of foreign dependency in energy demand, a feasibility report ready for investors and an academic. In this sense, it is aimed to present a ready-to-use design of a medium-sized power plant that will set an example for trigeneration studies. From the designed system; 66% exergic efficiency in winter, thermal efficiency 0.87411 with 2.05 MW thermal capacity, 63% exergic efficiency in summer, COP 0.82 and 1.5 MW cooling capacity, and 2.02 MWe instantaneous electrical power was found in summer and winter. The results have shown us that the designed system can be a facility that is open to development and worth establishing with the results obtained technically. Based on the current applications made so far, it has been determined that there are similar results between the studies in the literature and the exergy and energy analyses of the trigeneration system, which we have made feasibility in Umuttepe campus and are close to the findings obtained in the calculations in the literature.