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Effect on Thermal Performance of Superheater Module under Part Load Operation in HRSG  

Chong, Chae-Hon (Doosan heavy industries & construction)
Song, Jung-Il (Changwon National University)
Publication Information
Journal of Energy Engineering / v.17, no.3, 2008 , pp. 161-166 More about this Journal
Abstract
The purpose of this study is to apprehend the behavior of exhaust gas flow from gas turbine during part load operation in Heat Recovery Steam Generator. As a first step of this work, internal flow characteristics according to HRSG types were examined by CFD analysis. Next step, tube temperature according to gas turbine 53% and 100% load conditions were calculated by results of CFD and those were compared with temperature data gathered from real plant. Finally, thermal performance due to part load operation was calculated to estimate the influence of heat transfer in superheater. In addition, new type of device is suggested to eliminate the uneven temperature distribution of tubes during part load operation.
Keywords
HRSG; Thermal performance; Part load operation;
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