Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
ENERGY, EXERGETIC AND ECONOMIC ANALYZES OF A KALINA CYCLE DRIVEN BY SOLAR THERMAL ENERGY IN THE BOM JESUS DA LAPA-BA CITY
Submission Author:
Géssica Amorim , BA , Brazil
Co-Authors:
Géssica Amorim, Juan Jose Garcia Pabon, André Issao Sato
Presenter: Géssica Amorim
doi://10.26678/ABCM.COBEM2023.COB2023-1352
Abstract
The use of fossil fuels during the industrialization process in the last century has resulted in climate change, due to the large emissions of pollutants into the atmosphere, which are emerging points of debate in the current decade, as enacted in the Paris Plan and reported in the latest report of the Intergovernmental Panel on Climate Change (IPCC). There is a need to make the world's energy matrix based on renewable energy sources which, although attractive, are intermittent sources. In this study, parabolic trough solar concentrators are coupled to a Kalina cycle to study the system's performance throughout the year. Energy availability was based on solar irradiation data collected from the National Meteorological Institute (INMET) database for the Bom Jesus da Lapa-Ba municipality. Mathematical modeling was developed by applying mass, energy and exergy balances to each control volume. An economic analysis was then carried out to obtain the levelized cost of energy (LCOE) and payback (Pb) values. The results show that the cycle has an energy efficiency of 14% and an average exergy efficiency of 12.14%. In addition, the exergy analysis shows that the main source of energy destruction is the solar concentrators and the condenser. Finally, the LCOE of 0.41$/kWh and a payback of 4.5 years were obtained.
Keywords
Kalina cycle, Computacional Modeling, energy efficiency, Exergy efficiency, economic analisys
