Eventos Anais de eventos
ENCIT 2018
Brazilian Congress of Thermal Sciences and Engineering
Thermodynamic Analysis of a trigeneration system for a Resort
Submission Author:
Ana Lívia Formiga Leite , PI
Co-Authors:
Ana Lívia Formiga Leite, Carlos Antonio Cabral Santos
Presenter: Ana Lívia Formiga Leite
doi://10.26678/ABCM.ENCIT2018.CIT18-0619
Abstract
The present work aims to study the maximum use of energy for a resort in Brazilian northeast. A trigeneration system was proposed to supply the thermal load, the hot water demand for the bathrooms and the kitchen, and the electrical energy demand. The resort has an electrical generator of 240 kVA and has a thermal load of 288 kW. The heat rejected by the exhaust gases from the diesel engine has been used in a double effect absorption chiller and the cooling water from the engine jacket has been used in a single effect absorption chiller, both with water-lithium bromide. The energy analysis was developed to define heat and mass transfers and the Coefficient of Performance (COP). As the First Law of Thermodynamics is not enough to analyze the system, the exergy analysis is applied to determine the exergy destroyed and the Second Law efficiency of each component. The proposed system supplies 90% of the actual thermal load of the resort and provides 127,68 kW of heat for hot water. The high pressure generator presents the greater destroyed exergy and the single effect generator has the best exergy efficiency. The proposed system has attended well to the thermal requirements of the resort.
Keywords
Trigeneration, Energy Analysis, Exergy Analysis, absorption chiller
