Abstract:This paper discusses various issues that should be considered when designing the steam system for a typical three pressure reheat cycle, which is used at many of today’s combined cycled plants. A cascade bypass arrangement in the steam system is commonly used to ensure steam flow is available to the reheat section of the HRSG during startup. For the purposes of this paper, a cascade bypass system will be defined as high pressure steam being bypassed to the cold reheat steam and hot reheat steam being bypassed … Show more
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