Numerical computation of pressure drop across an off supplementary firing burner in heat recovery steam generator

Karimkashi, Shervin and Kermani, Mohammad J. and Sharifian, Ahmad and Hashempour, Javad (2012) Numerical computation of pressure drop across an off supplementary firing burner in heat recovery steam generator. In: 18th Australasian Fluid Mechanics Conference (AFMC 2012), 3-7 Dec 2012, Launceston, Australia.

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Abstract

Combined-gas and steam-turbine power plants have become
popular in recent years for distributed power generation and heat production. The optimal thermodynamic and economical design of these plants requires the study of their main components, which are the gas turbine, the steam turbine and the Heat Recovery Steam Generator (HRSG). The HRSG is a heat exchanger that recovers heat from the gas turbine cycle and produces steam and/or hot water, either to be used in a downstream steam cycle or to feed industrial/civil utilities. Some HRSGs include Supplementary Firing (SF) which are additional burners providing additional energy at lower capital costs. However, the supplementary burners cause pressure drops
through the duct burner bars which makes the gas turbine to be exhausted at higher pressures. The gas pressure drop should be limited, as previous works show each additional 10 millibars gas pressure drop in the HRSG decreases the gas turbine power output by about 1%. In this work, pressure drop in an off-Supplementary Firing burner of HRSGs has been simulated using two- and three-dimensional models. Simulations indicate that the pressure drop increases with the temperature of the flow entering the burner section. The computational results show very good agreement with semi-empirical results.


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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Additional Information: © The 18th Australasian Fluid Mechanics Conference. This publication is copyright. It may be reproduced in whole or in part for the purposes of study, research, or review, but is subject to the inclusion of an acknowledgment of the source.
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Mechanical and Mechatronic Engineering
Date Deposited: 11 Feb 2013 05:04
Last Modified: 16 Mar 2017 04:49
Uncontrolled Keywords: HRSG; supplementary firing; pressure drop in an SF; numerical computation
Fields of Research : 09 Engineering > 0913 Mechanical Engineering > 091305 Energy Generation, Conversion and Storage Engineering
09 Engineering > 0913 Mechanical Engineering > 091307 Numerical Modelling and Mechanical Characterisation
09 Engineering > 0915 Interdisciplinary Engineering > 091502 Computational Heat Transfer
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
URI: http://eprints.usq.edu.au/id/eprint/22413

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