Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Thermoeconomic Optimization of Kalina Cycle Systems for Waste Heat Recovery in a Diesel Engine
Submission Author:
Manuel Schiaffino , ES
Co-Authors:
LEONARDO ARAUJO, Alexandre Morawski, Marcelo Aiolfi Barone, Carla César Martins Cunha, João L M Donatelli, José Joaquim Conceição Soares Santos, Manuel Schiaffino
Presenter: Manuel Schiaffino
doi://10.26678/ABCM.COBEM2017.COB17-0695
Abstract
In this work, a thermoeconomic optimization of Kalina Cycle is carried out in order to recover waste heat from cooling water and exhaust gases in a diesel engine. For each heat source, it was evaluated two different structures of Kalina Cycle, regenerative and non-regenerative. The objective function for the thermoeconomic optimization problem is the profit from sale of Kalina Cycle additional power generation. The decision variables of the optimization problem are evaporation pressure, condensation pressure, waste heat recovery exchanger approach, pump isentropic efficiency, turbine isentropic efficiency, separator terminal temperature difference, regenerator effectiveness, superheater temperature increase, mass flow and ammonia concentration. The optimization problem, as well as the thermodynamic and economic modelling, were formulated and solved in EES (Engineering Equation Solver) software. The results of the thermoeconomic optimization problem allow to evaluate the total costs, thermal efficiency and net engine power output of the Kalina Cycle for the waste heat and others design parameters.
Keywords
Internal combustion engine, Kalina cycle, Waste Heat Recovery (WHR), Optimization
