Cooled expansion in gas turbines: a comparison of analysis methods

With the steady rises in maximum gas turbine cycle temperatures, cooled exp ansion is receiving more and more attention from researchers and industry. Several mathematical-physical models were developed in the course of an inv estigation of the effects of cooling on cycle performance. The results show that the first law and second law (exergy) approaches are not alternatives but complementary in gaining insight into the thermodynamic effects of suc h cooling on the cycle. (C) 1999 Elsevier Science Ltd. All rights reserved.