Oxy-fuel heat transfer characteristics and impacts on boiler design

Title: Oxy-fuel heat transfer characteristics and impacts on boiler design
Creator: Liu, Y.; Wall, T.; Khare, S.; Gupta, R.
Relation: Oxy-fuel combustion for power generation and carbon dioxide (CO₂) capture p. 166-193
Relation: https://www.elsevier.com/books/oxy-fuel-combustion-for-power-generation-and-carbon-dioxide-co2-capture/zheng/978-1-84569-671-9
Publisher: Woodhead Publishing
Resource Type: book chapter
Date: 2011
Description: An outline of the basis of radiative transfer which dominates furnace heat transfer for coal-fired oxy-fuel furnaces is presented and illustrated by comparisons of the significance of the radiating species influencing heat transfer, and also differences between air-fired and oxy-fuel fired furnaces. Heat balances and heat transfer for three different oxy-fuel furnaces of 1.2 MWt, 30 and 420 MWe are given by a simple well-stirred reactor model and also comprehensive computational fluid dynamics models. It is concluded that oxy-fuel combustion can be operated at the same heat transfer rate as air-firing, but results in operational changes -lower volumetric gas flow rate, lower adiabatic flame temperature and lower flue exit gas temperature - associated with the higher gas emissivity of oxy-fuel firing and different heat capacity of the flue gas.
Subject: oxy-fuel; heat transfer; radiation
Identifier: http://hdl.handle.net/1959.13/1064871
Identifier: uon:17669
Identifier: ISBN:9781845696719
Language: eng

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