Session: 04-16 Hydrogen Emissions I

Submission Number: 178417

Hydrogen Combustion CFD Model Development and Validation for NOx Emission Evaluation at Real Gas Turbine Operating Conditions 

In the development phases of a combustion system for an industrial gas turbine, models are crucial to assist the product validation and to evaluate the effect of actual production capability on behavior. This is particularly true for hydrogen combustion, where the manufacturing process variability may have stronger effect on NOx emission if related to natural gas standard operation.

A CFD-based model has been developed to predict the NOx emission in real engine conditions. The validation of this model is presented in this paper. The results of a recent test campaign carried out on the NovaLT16™ H₂ industrial gas turbine, manufactured by Baker Hughes, and equipped with the extended capability combustion system, have been used on purpose. In the test campaign, NOx emissions have been collected as a function of burner main regulating parameters, as well as of fuel composition: in particular, data are available for hydrogen, methane, and blends. The numerical practices reported in the paper are good at predicting pressure loss, mixing behavior, temperature behavior, and NOx emissions with reasonable accuracy and the paper finally focuses on modeling guidelines for NOx prediction. A comparative analysis has been performed among fuel types and modes of mixing, which will be presented to demonstrate the significance of these effects on the overall NOx emissions.

Keywords: Hydrogen, Numerical Modelling, NOx 

Presenting Author: Arun Kochuparampil Ampi Baker Hughes

Presenting Author Biography: Master's in combustion research and 9+ years of combined academic and industry research experience in the design and development of combustors. Expertise in reactive flow combustion modelling. Sound knowledge of combustion testing.

Authors:

Rajesh Mavuri Baker Hughes
Matteo Cerutti Baker Hughes
Daniele Pampaloni Baker Hughes
Arun Kochuparampil Ampi Baker Hughes