水素・多燃料ガスタービン向け二段・三段シーケンシャル燃焼器の設計と空熱力学評価
Design and Aerothermal Assessment of Two- and Three-Stage Sequential Combustors for Hydrogen and Multifuel Gas Turbines (原題)
Yash Chougale, H. G. Darabkhani
🤖 gxceed AI 要約
日本語
水素および多燃料対応ガスタービン向けに、二段・三段の環状シーケンシャル燃焼器の空熱力学性能をパラメトリックシミュレーションで評価した研究。水素運転では10%パイロット分割の二段構成が最も均一な出口温度分布を示し、単段比で熱的NOxを約10%削減した。三段構成は軸方向の熱放出分散に優れるが追加の排出削減効果は限定的で、燃料分布への感度が増大した。アンモニア含有燃料は燃料由来窒素によりNOxが増加するが、水素-アンモニア-天然ガスの三元混合は火炎温度と反応性を緩和しこの影響を軽減した。
English
This study parametrically simulates two- and three-stage annular sequential combustors for hydrogen and multifuel gas turbines. A two-stage configuration with 10% pilot split gave the most uniform exit temperature and ~10% lower thermal NOx than a single-stage baseline. Three-stage operation improved axial heat-release distribution but added little emission benefit and higher sensitivity to fuel distribution. Ammonia blends raised NOx via fuel-bound nitrogen, mitigated by ternary H2-NH3-NG mixtures.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
水素・アンモニア混焼ガスタービンは日本のGX実現（水素社会・火力脱炭素）の中核技術であり、発電分野のScope1削減ロードマップに直結する。燃焼器設計の最適化は電力・重工業セクターの脱炭素投資判断に実用的示唆を与える。
In the global GX context
Fuel-flexible, low-NOx combustors are a key enabler of hydrogen-compatible power generation and hard-to-abate decarbonization pathways relevant to global net-zero and transition planning. The staged-combustion trade-off analysis informs engineering decisions for utilities and turbine OEMs pursuing hydrogen readiness.
👥 読者別の含意
🔬研究者:段階燃焼におけるNOx・温度分布・燃料柔軟性のトレードオフを定量化した基準データを提供する。
🏢実務担当者:水素・アンモニア混焼ガスタービン導入時の燃焼器構成選定とNOx管理の設計指針として活用できる。
🏛政策担当者:水素・アンモニア火力の脱炭素効果と技術的制約を踏まえた導入支援・規制設計の参考になる。
📄 Abstract（原文）
Achieving global net-zero targets requires low-emission, fuel-flexible combustor architectures capable of operating with hydrogen and hydrogen-based fuel blends. Sequential and staged combustion has emerged as a promising approach for controlling heat release and reducing NOx formation. This study evaluates the aerothermal performance of two- and three-stage annular combustor configurations representative of high-pressure gas turbine systems for power generation. Parametric simulations were conducted to examine the influence of fuel staging on temperature distribution, pressure loss, and NOx formation under hydrogen and multi-fuel operating conditions. For hydrogen operation, the two-stage configuration with a 10% pilot fuel split produced the most uniform exit temperature profile and achieved approximately a 10% reduction in predicted thermal NOx compared to a single-stage baseline. While three-stage operation enabled more distributed axial heat release, it provided limited additional emission reduction and showed increased sensitivity to fuel distribution. Multi-fuel operation demonstrated that ammonia-containing cases increased NOx due to fuel-bound nitrogen chemistry; however, ternary hydrogen–ammonia–natural gas mixtures mitigated this effect by moderating flame temperature and reactivity. The results indicate that optimized two-stage combustor architectures provide the best balance between NOx reduction, operational robustness, and system complexity, while three-stage configurations primarily enhance fuel flexibility rather than minimum-emission performance. These findings support staged combustion as a practical pathway for low-NOx, fuel-flexible gas turbines enabling the transition toward hydrogen-compatible energy systems.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://asmedigitalcollection.asme.org/GT/proceedings-pdf/GT2026/89725/V02BT04A030/7648330/v02bt04a030-gt2026-178759.pdffirst seen 2026-10-22 05:30:22 · last seen 2026-11-06 05:23:23
🔔 こうした論文の新着を逃したくない方は キーワードアラート に登録（無料・3キーワードまで）。
gxceed は公開メタデータに基づく研究支援データセットです。要約・翻訳・解説は AI 支援で生成されています。 最終的な解釈・検証は利用者が原典資料に基づいて行うことを前提とします。