Boris Ferdinand Kock
Siemens
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Featured researches published by Boris Ferdinand Kock.
Volume 1: Aircraft Engine; Ceramics; Coal, Biomass and Alternative Fuels; Controls, Diagnostics and Instrumentation | 2012
Benjamin Witzel; Johannes Heinze; Boris Ferdinand Kock; Guido Stockhausen; Holger Streb; Jaap van Kampen; Christof Schulz; Christian Willert; Christian Fleing
Single burner combustion tests play a key role in the Siemens gas turbine combustion system development process. The main scope of these tests is to assess the performance of combustor design variants in terms emissions or combustion stability at gas turbine relevant operation conditions. Both emissions and combustion stability strongly depend on the flame front and flame position. A pragmatic approach to investigate the flame is to detect the chemiluminescence signal of the combustion intermediate species OH*. Thus, the OH*-chemiluminescence signal was recorded at high-pressure combustion tests to get more insight in the complex interactions between combustor design, operation conditions and combustion performance.To minimize the impact of the measurement system on the combustion behavior, the optical access to the test rig was realized by using a water-cooled probe with an UV-transparent endoscope. The probe was located in the test rig side-wall, downstream of the burner outlet, viewing towards the burner with a 90° angle relative to the endoscope orientation. The experimental setup was completed by a combination of bandpass filters and an ICCD camera.During the experiments acoustic pressure oscillations inside the combustion chamber were recorded simultaneously to the chemiluminescence images to allow for phase-sorting of the recorded images during the image post-processing. The post-processed images then were correlated with the pressure oscillations to investigate the relationship of the heat release to the pressure oscillations.The measurements were carried out during single burner gas turbine combustion tests at realistic gas turbine operation conditions at a scaled pressure of 9 bar.This paper presents selected test results and discusses how they give new insight in the complex combustion processes at full-scale high-pressure gas turbine combustion tests.Copyright
ASME Turbo Expo 2013: Turbine Technical Conference and Exposition | 2013
Boris Ferdinand Kock; Bernd Prade; Benjamin Witzel; Holger Streb; Mike H. Koenig
The first Siemens AG SGT5-4000F engine with hybrid burner ring combustor (HBR) was introduced in 1996. Since then, frequent evolutionary design improvements of the combustion system were introduced to fulfill the continuously changing market requirements. The improvements particularly focused on increased thermodynamic performance, reduced emissions, and increasing operational flexibility in terms of load gradients, fuel flexibility, and turndown capability.According to the Siemens product development process, every design evolution had to pass several validation steps to ensure high reliability and best performance. The single steps included cold flow and mixing tests at atmospheric pressure, high-pressure combustion tests in full-scale sector combustion test rigs, and full engine tests at the Berlin test facility (BTF).After successful validation, the design improvements were gradually released for commercial operation. In a first step, cooling air reduction features have been implemented in 2005, followed by the introduction of a premixed pilot as second step in 2006. Both together resulted in a significant reduction of the NOx emissions of the system. In a third step, an aerodynamic burner modification was introduced in 2007, which improved the thermo-acoustic stability of the system towards higher turbine inlet temperatures and adapted to fuel preheating to allow for increased cycle efficiency. All three features together have been released as package in 2010 and to date accumulated more than 50,000 operating hours (fleet leader 24,000).This paper reports upon the steps towards this latest design status of the SGT5-4000F and presents results from typical focus areas of lean premixed combustion systems in gas turbines including aero-dynamical optimization, fuel/air mixing improvements and cooling air management in the combustor.Copyright
Archive | 2014
Andreas Böttcher; Boris Ferdinand Kock; Bernd Prade; William R. Ryan; Richard L. Thackway; Daniel Vogtmann; Ulrich Wörz; Berthold Köstlin; Lars Terjung
Archive | 2017
Andreas Böttcher; Shahrzad Juhnke; Andre Kluge; Boris Ferdinand Kock; Tobias Krieger
Archive | 2015
Bernd Prade; Mariano Cano Wolff; Boris Ferdinand Kock; Jürgen Meisl; Andreas Diebels; William R. Ryan
Archive | 2015
Andreas Böttcher; Hartwig Dümler; Werner Hesse; Boris Ferdinand Kock; Patrick Lapp; Lars Otte; Falk Seidel; Philipp Stapper; Sascha Staring; Gerd Weber
Archive | 2015
Dieter Simon; Eberhard Deuker; Boris Ferdinand Kock
Archive | 2015
Andreas Böttcher; Olga Deiss; Boris Ferdinand Kock; Patrick Lapp; Andreas Mann; Martin Stapper; Daniel Vogtmann; Benjamin Witzel
Archive | 2015
Andreas Böttcher; Peter Kaufmann; Andre Kluge; Boris Ferdinand Kock; William R. Ryan; Udo Schmitz; Daniel Vogtmann; Kampen Jaap Van
Archive | 2015
Christian Amann; Björn Beckmann; Eberhard Deuker; Kai Kadau; Boris Ferdinand Kock; Georg Rollmann; Sebastian Schmitz; Marcel Zwingenberg