variavel0=<b>Lourenço Gobira Alves</b> - lourenco@fem.unicamp.br UNICAMP
<b>Silvia Azucena Nebra</b> - sanebra@fem.unicamp.br UNICAMP - Faculdade de Engenharia Mecânica
<b>Abstract.</b> One of the proposals studied in the last years for the electric generation has been the Chemical Recuperated Gas Turbine  Cycle. The main characteristic of this cycle is the use of the hot gases that leave the turbine to promote the synthesis gas through the  reaction of the methane with the steam. The exhaust gases that leave the turbine exchange heat in the reformer and are still able to  generate  steam  for  sale  or  for  process.  The  integration  of  the  two  processes  makes  the  plant  capable  to  combine  two  different  products  without  the  need  of  acquiring  additional  equipment.  This  work  optimizes  the  cycle  in  two  objectives,  higher  exergetic  perform  and  higher  operational  net  profit, assumed  as  the  difference  between the  products sale  and  the  cost  of  the  inputs.  It was  assumed  the  chemical  composition  in  the  reformer  according  to  chemical  equilibrium  equations  balance,  what  it  presents  good  agreement with data of literature. The mixture of gases was treated as a perfect mixture of ideal gases, the mixture of the gases was  shaped taking  in  consideration the  variation  of  the  specific  heat with  the temperature, what it  results in  a  nonlinear analysis.  The  optimization  has  shown  the  combustion  chamber  like  the main  source  of  irreversibility,  that  agree  if  the  literature.  The  optimal  performance parameters are at the same parameters of the higher operational net profit.
<b>Keywords.</b> Optimization, Chemical Recuperated Gas Turbine, Exergetic Analysis.