Estudo energético, exergético e ambiental de chillers de absorção movidos a fontes alternativas de energia

Abstract

Faced with market competition and the study of new sources of alternative energy, organizations seek global quality standards that meet the real needs of society. This work aims to study and compare the energy, exergetic and environmental efficiency of a small system that uses the absorption chiller for thermal comfort, using as a primary source: solar energy, biogas and natural gas. Through the 1st law and 2nd law of thermodynamics, thermodynamic models were proposed to obtain data on exergy and energy efficiency. The environmental analysis was formulated based on the methodology of the IPCC (Intergovernmental Panel on Climate Change). The proposed simulations were performed in EES® (Engineering Equation Solver). The simulated systems presented a COP of 0.8144 and the exergy efficiencies were 25.09% for the solar system, 15.72% for biogas and 17.03% for natural gas. When compared to alternative sources with an absorption chiller and a conventional system, around 32 t CO2 were avoided.