GAS POWER SYSTEMS CATALOG I Bottoming Cycle Of ferings


HRSG OFFERINGS OVERVIEW AND SCOPE


The heat recovery steam generator (HRSG) is a primary component in the bottoming cycle of a combined cycle power plant. It provides the thermodynamic link between the gas turbines and steam turbines. Each HRSG solution is custom engineered to meet your desired operating flexibility and performance requirements.


GE’s HRSG units are cost-effectively designed for heavy cycling operations that allow owners to reduce the cost of electricity, boost performance, increase reliability, and enhance flexibility. Numerous options are available, such as supplementary firing, SCR for NOx abatement, CO catalyst for emissions reduction, and exhaust gas bypass systems for simple cycle gas operation in a combined cycle installation.


Optimized for Cycling and Constructability (OCC*) Our approach alleviates thermal expansion issues associated with start-stop operating regimes (hot restarts and daily load following). The stepped arrangement—from the manifold, to a link, to a header, and finally to the finned tubes—reduces thermal stress by as much as 60 percent compared to the industry standard approach. With this superior capability for cyclic operations, you benefit from lower maintenance costs and increased life cycle.


Finned Tubes Header Link


Manifold GE’s OCC Approach Stress Level Conventional Approach


A choice of modular construction options lets you choose the delivery method that best fits your specific project site infrastructure, transportation, and labor cost restrictions.


Harp Bundle For sites with:


• Transportation restrictions • Large crane scarcity • Low site labor costs


Modules For sites with:


• Fewer transportation restrictions


• Large crane availability


C-Frame For sites with:


• Unrestricted transportation • Large crane availability


Fully Assembled For sites with:


• Unrestricted crane and transportation availability


• High site labor costs


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