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ISSN Online: 2377-424X

ISBN CD: 1-56700-226-9

ISBN Online: 1-56700-225-0

International Heat Transfer Conference 13
August, 13-18, 2006, Sydney, Australia

INTEGRATED SYSTEMS CFD ANALYSIS APPLIED TO BOILER SIMULATION

Get access (open in a dialog) DOI: 10.1615/IHTC13.p22.300
12 pages

摘要

Complex thermal-fluid systems may consist of many interacting components such as pipes, heat exchangers, turbines and boilers. Two major challenges are encountered when carrying out the thermal-fluid design and optimization of such a system. The first is to predict the performance of all the thermal-fluid components on the system level and the second is to predict the performance of the integrated plant consisting of all its sub-systems. The solution to both is an Integrated Systems CFD (Computational Fluid Dynamics) approach that deals with various levels of complexity between individual models to account for the interaction between components on system level. To illustrate the Integrated Systems CFD approach, this paper presents the practical example of a typical coal-fired boiler at Lethabo Power Station. A one-dimensional pipe network was used to determine the quality of the steam mixture and the heat transfer in the boiler riser tubes and these were linked to the full three-dimensional CFD model that was used to predict gas flow and heat generation in the furnace. Results from the CFD model showed gas flow patterns and heat distributions inside the boiler. From the network model the temperatures and steam quality inside the riser tubes were obtained and illustrated the process of steam generation inside the riser tubes.