Abstract
ABSTRACTOn the CG‐47 class, gas turbine electric generators are operating in a shipboard cogeneration system in conjunction with a successful and reliable waste heat recovery system which provides steam for auxiliary services. The current application philosophy for waste heat recovery from gas turbine auxiliary engines aboard Navy ships, however, has reached a technological plateau.The development and implementation of a second generation waste heat recovery system (WHRS) design could produce substantial benefits for future naval shipboard applications. This paper discusses methods of optimizing the interface between the gas turbine and the waste heat boiler, relocating boiler components, utilizing natural instead of forced circulation in the boiler, and reducing the complexity of feedwater treatment subsystems.Implementaion of integrated design features for a second generation waste heat recovery system could result in increased steam production, reduced boiler and auxiliary space requirements, reduced weight, and a lower shipboard center of gravity. In addition, a reduction in installed system cost and manhours spent on water treatment and routine shipboard maintenance could be obtained, along with significant, continued shipboard energy savings.
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