Customer Login Shopping Cart
Library Subscription: Guest
Home Archives Officers Future meetings American Society of Thermal and Fluids Engineering

ISSN Online: 2379-1748

ISBN Print: 978-1-56700-472-4 (Flash Drive)

ISBN Online: 978-1-56700-471-7

3rd Thermal and Fluids Engineering Conference (TFEC)
March, 4–7, 2018, Fort Lauderdale, FL, USA

METHODOLOGY TO IMPROVE FLOW DISTRIBUTION AND DUCT BURNER COMBUSTION IN HEAT RECOVERY STEAM GENERATORS

Get access pages 211-221
DOI: 10.1615/TFEC2018.cfd.021670

Abstract

Heat recovery steam generators are essential elements that take the waste heat from the gas turbine exhaust gas to produce steam that upon expansion in a steam turbine delivers additional power. Supplementary firing duct burner is used in these elements to increase the heat of the fluid likewise the steam production. Exhaust gas flow plays a fundamental role to start ignition and keep rich burning using its residual oxygen to feed and form flames by diffusion. Non-homogeneous distribution promotes duct burner flames to quench lowering the heat transfer. In recent research several designs have been analyzed using computational fluid dynamics to improve flow conditions by adjusting geometries or adding flow correction devices. A previous study that integrates a diverter valve in the transition gas turbine-heat recovery steam generator for a combined cycle cogeneration plant yields unstable flow results. This paper proposes a methodology to improve non-uniform flow pattern thus, efficient combustion in duct burners by adjusting the attack angle of the duct burner baffles and other flow correction components installed in the system. The analysis has its core on the structured experimentation carried out by means of computational fluid dynamics being able to predict flow behavior with statistical bases.
Home Archives Officers Future meetings American Society of Thermal and Fluids Engineering English Русский 中文 Português Help Contact Us Back to ASTFE