Case Studies: Nueces Bay, Unit #7 and Barney M. Davis, Unit #2 for Topaz Power: The Successful Turnkey Repowering of Existing Steam Surface Condensers From Traditional Rankine to a 2x1 Combined Cycle Configuration

The turnkey repowering conversion of any existing steam surface condenser, from operation within a traditional steam plant Rankine cycle to that of Combined Cycle configuration, includes a great number of detailed and complex thermal & mechanical design, modification, installation and operational challenges to be considered and overcome. Indeed, it may not always be possible to even consider the reuse and conversion of an existing steam surface condenser from a traditional Rankine cycle to Combined Cycle operation due to one, or more, existing limitations. The purpose of this paper, through case studies, is to showcase the entire process of the determination and subsequent implementation of the minimum requirements for the modification and refurbishment of two steam surface condensers at existing power plant facilities.