INGAR   05399
INSTITUTO DE DESARROLLO Y DISEÑO
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Design of Combined Heat and Power Plant using MINLP model
Autor/es:
SERGIO F. MUSSATI
Lugar:
Lisboa
Reunión:
Conferencia; EngOpt 2010 - 2nd International Conference on Engineering Optimization; 2010
Institución organizadora:
CPM - Centre for Mechanical Design, Instituto Superior Técnico
Resumen:
This paper presents a Mixed Integer Nonlinear Programming (MINLP) mathematical model
to simultaneously optimize the configuration of a Combined Cycle Power Plant (CCPP), the
geometric design and operating conditions as well. The whole process is modelled by considering
detailed energy, mass and momentum balances. Physical and chemical properties of air, oil, flue
gases, overall radiant exchange factor, convection coefficient, overall heat transfer coefficients are
computed using nonlinear correlations. On the other hand, discrete decisions (integer variables)
are employed to model the tube number, diameters and widths of tubes in each equipment section
as well as the number of fins per unit length of tube among others. Continuous variables are
related to the pressures, temperatures and flow-rates of gases and working fluid streams. GAMS
(General Algebraic Modelling System GAMS) is used to implement and to solve the mathematical
model. Once the proposed MINLP model was successfully validated with literature, it was solved
considering different objective functions. The obtained results are presented and discussed in
detail.