par De Paepe, Ward ;Montero Carrero, Marina ;Bram, Svend;Parente, Alessandro ;Contino, Francesco
Référence ASME Turbo Expo(GT2017: Charlotte, NC, USA), ASME Proceedings: Cycle Innovations
Publication Publié, 2017
Publication dans des actes
Résumé : Micro Gas Turbines (mGTs) offer several advantages for small-scale Combined Heat and Power (CHP) production compared to their main competitors, the Internal Combustion Engines (ICEs), such as low vibration level, cleaner exhaust and less maintenance. The major drawback is their lower electrical efficiency, which makes them economically less attractive and explains their low market penetration. Shifting towards more innovative cycles may help enhancing the performance and the flexibility of mGTs.One interesting solution is the introduction of water ¬either as auto-raised steam or hot liquid¬, in the mGT cycle. The so-called humidification of the mGT cycle has the potential of increasing the electrical performance and flexibility of the mGT, resulting in a higher profitability. However, despite the proven advantages of mGT humidification, only few of these engines have been experimentally tested and up to now, no cycle is commercially available.With this paper, we give a comprehensive review of the literature on research and development of humidified mGTs: we examine the effect of humidification both on the improvement of the cycle efficiency and flexibility and on the performance of the specific mGT components. Additionally, we will present the different possible layouts, both focusing on the numerical and experimental work. Finally, we pinpoint the technological challenges that need to be overcome for humidified mGTs to be viable. In conclusion, humidification of mGT cycles offers great potential for enhancing the cycle's electrical efficiency and flexibility, but further research is necessary to make the technology commercially available.

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