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http://dx.doi.org/10.5293/kfma.2016.19.6.019

Analysis of the Influence of Anti-icing System on the Performance of Combined Cycle Power Plants  

Moon, Seong Won (Graduate School, Inha University)
Kim, Jeong Ho (Graduate School, Inha University)
Kim, Tong Seop (Dept. of Mechanical Engineering, Inha University)
Publication Information
Abstract
Anti-icing is important in gas turbines because ice formation on compressor inlet components, especially inlet guide vane, can cause performance degradation and mechanical damages. In general, the compressor bleeding anti-icing system that supplies hot air extracted from the compressor discharge to the engine intake has been used. However, this scheme causes considerable performance drop of gas turbines. A new method is proposed in this study for the anti-icing in combined cycle power plants(CCPP). It is a heat exchange heating method, which utilizes heat sources from the heat recovery steam generator(HRSG). We selected several options for the heat sources such as steam, hot water and exhaust gas. Performance reductions of the CCPP by the various options as well as the usual compressor bleeding method were comparatively analyzed. The results show that the heat exchange heating system would cause a lower performance decrease than the compressor bleeding anti-icing system. Especially, the option of using low pressure hot water is expected to provide the lowest performance reduction.
Keywords
Anti-icing System; Compressor Bleed; Combined Cycle System; Gas Turbine; Heat Exchange; HRSG;
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