Thermodynamic Synthesis of Cogeneration Systems in Chemical Processes Including Gas Turbines

SERGIO MUSSATI; PIO A. AGUIRRE; NICOLÁS J. SCENNA

LATIN AMERICAN APPLIED RESEARCH

PLAPIQUI(UNS-CONICET)

Lugar: Bahia Blanca; Año: 1998 vol. 28 p. 243 - 246

0327-0793

The thermodynamic synthesis procedure presented in previous papers is extended to dual purpose desalination plants including gas turbines, using exhausted gas as a heat source for steam turbine cycles. The new conditions that must be satisfied by the optimal thermodynamic solutions are discussed and the corresponding numerical algorithm is presented. A set of thermodynamically non-ideal optimal solution is obtained, for each amount of investment determined by the items used (heat transfer areas, turbine efficiencies and capacities, etc.). The assumed structure considers a gas turbine discharging the exhausted gas to a backpressure turbine cycle coupled to a desalination process and to a condensation turbine cycle. It is easy to extend the synthesis procedure to an extraction-condensation turbine system also. The solutions obtained constitute the basis for the designer? selection, of those alternatives that satisfy optimum economical and process functional criteria.