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Heat Recovery Steam Generator Technology by Vernon L. Eriksen

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5

Economizers and feedwater heaters

Yuri Rechtman,    Nooter/Eriksen Inc., Fenton, MO, United States

Abstract

Two distinctly different approaches to the physical design of an economizer exist in today’s heat recovery steam generator (HRSG) business. One is driven by design considerations, another by manufacturing reasons. A custom design allows theoretical flexibility to satisfy thermal and hydraulic process requirements. A standard design requires all panels to be the same for ease of manufacturing and utilizes crossover jumpers to connect panels and build the flow circuitry. This arrangement often requires more heating surface due to the mix of cross- and counterflow arrangements. Both custom design and standard design economizers have operated ...

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