Performance Evaluation of a Trigeneration System with Micro Gas Turbine Engine (MICTRIGEN) based on Exergy Analysis
This study presents some developed energetic and exergetic assessment indicators to analyze the exergetic performance evaluation of a trigeneration system with a micro gas turbine engine (MICTRIGEN) fueled by natural gas. The energy efficiency, electrical to heating ratio, electrical to cooling ratio, cooling factor and heating factor are determined to be 66.67%, 2.062, 2.857, 0.419 and 0.581, respectively. On the other hand, the exergy efficiency, improved exergy efficiency, fuel exergy depletion ratio, productivity lack ratio, exergetic improvement potential, waste exergy improvement potential ratio, fuel exergy improvement potential ratio, waste exergy cost rate, environmental effect factor, exergetic sustainability index, sustainable efficiency factor and ecological effect factor of the system are estimated to be 38.42%, 48.55%, 61.58%, 160.28%, 133.69 kW, 33.88%, 20.86%, 1.144×10-3 kW/$, 1.603, 0.624, 1.624 and 2.603, respectively. Based on the exergy, the electrical to heating ratio, electrical to cooling ratio, cooling factor, and heating factor are found to be 38.42%, 13.231, 53.328, 0.199 and 0.801, respectively. Performance indicators show that system owners and researchers focus on the combustion chamber, heat exchanger, water pump, and absorption chiller to improve the exergetic efficiency values of these components. Additionally, these parameters help us to measure environmental/ ecological impacts and sustainability of system.
