Results 81 to 90 of about 779,507 (290)

Numerical study on flow and heat transfer of combustion chamber and turbine under thermal shock test

Case Studies in Thermal Engineering
In order to more accurately analyze the influence of the interaction between the aero-engine combustion chamber and the turbine, this paper establishes a combustion chamber-turbine cross-component model based on a high-pressure first-stage guide vane ...
Cheng-jun Wang, Hai-yi Tao, Peng-yu Xu, Yun-dong Sha   +3 more
doaj   +1 more source

Acoustic and Large Eddy Simulation studies of azimuthal modes in annular combustion chambers [PDF]

, 2012
The objectives of this paper are the description of azimuthal instability modes found in annular combus- tion chambers using two numerical tools: (1) Large Eddy Simulation (LES) methods and (2) acoustic solv- ers.
Wolf, Pierre, Staffelbach, Gabriel, Müller, Jens-Dominik, Gicquel, Laurent Y.M., Poinsot, Thierry   +4 more
core   +1 more source

Global and Detailed Calculation of Tube Wall Temperature in a Process Furnace Steam Superheater

Chemie Ingenieur Technik, EarlyView.
This study presents a comparison between an iterative global model and multiple approaches to a new non‐iterative model with the purpose of predicting tube wall temperature of a superheater. The results show that the non‐iterative method achieves sufficient accuracy while improving the prediction of local temperature distribution and better ...
Anežka Michálková, Zdeněk Jegla
wiley   +1 more source

Catalytic Oxidation of CO and VOC in Flue Gas of Coffee Roasting Machines

Chemie Ingenieur Technik, EarlyView.
Platinum‐coated cordierite monoliths effectively oxidized CO and VOC in coffee roasting exhaust with higher Pt loadings lowering light‐off temperatures. Scaled up 90 g/ft3 catalyst in a 5 kg roaster achieved 96% CO and around 78% VOC conversion at 350°C, highlighting stable operation requires flue gas temperatures ≥350°C.
Till Hauswald, Kalle Weidauer, Christoph Hahn, Sven Kureti   +3 more
wiley   +1 more source

Combustion instability control in the model of combustion chamber

Journal of Physics: Conference Series, 2013
An experimental study of the influence of external periodic perturbations on the instability of the combustion chamber in a pulsating combustion. As an external periodic disturbances were used sound waves emitted by the electrodynamics. The purpose of the study was to determine the possibility of using the method of external periodic perturbation to ...
Akhmadullin A., Ahmethanov E., Iovleva O., Mitrofanov G.   +3 more
openaire   +3 more sources

Selective Non‐Catalytic Reduction of NOx in the Exhaust Gas of Small Wood Gasification Boilers

Chemie Ingenieur Technik, EarlyView.
Kinetic studies of the SNCR reaction were conducted to investigate NOx reduction in the exhaust gas of small‐scale wood gasification boilers. Both the experimental results and the derived global kinetic model indicate that SNCR can achieve a significant reduction in NOx emissions under typical operating conditions. ABSTRACT The gas‐phase reaction of NO
Alexander Groß, Sven Kureti
wiley   +1 more source

Experimental study on the effect of pre-chamber structural parameters on combustion and emissions characteristics of ethanol pre-chamber engine

Case Studies in Thermal Engineering
To achieve low-carbon and sustainable development in the automotive industry, ethanol pre-chamber engines offer significant technical potential. The structural parameters of the pre-chamber significantly influence the formation of the pre-chamber spray ...
Kaichang Lai, Fangxi Xie, Hong Chen, Jiakun Du, Xiaoxiao Jiang, Jingxun Yang   +5 more
doaj   +1 more source

Experimental and Computational Studies of a Prototype Combustion Chamber for a Power Steam Boiler with a Vertical Precessing Vortex [PDF]

Problems of the Regional Energetics
Increasing the efficiency of using fossil fuels at thermal power plants is an urgent task. This problem arises most acutely during the operation of pulverized coal power boilers using flare fuel combustion technologies.
Boiko E.A., Semenov I.I., Lebedev K.V., Kulichkin A.P.   +3 more
doaj   +1 more source

Impact of Trace Water on the Macroscopic Activity of Commercial Ammonia Cracking Catalysts Under Process‐Relevant Conditions

Chemie Ingenieur Technik, EarlyView.
This study evaluates how small water impurities—typical in ammonia cracking feedstock—affect catalyst performance at elevated pressures and temperatures. By decoupling permanent degradation from reversible inhibition, the findings highlight trace water as a significant factor for reliable catalyst screening and industrial ammonia cracking scale‐up ...
Bruno V. P. Lago, Sebastian Wodak, Marianne Ponceau, Axel Behrens, Jan‐Peter Bohn, Sebastian Rehfeldt, Harald Klein   +6 more
wiley   +1 more source

Heat Transfer Correlations on Combustion Chamber Surface of Diesel Engine - Experimental Work

International Journal of Automotive Science and Technology, 2018
Design and control of recently developing engines have much important towards better fuel economy and reduction in exhaust emissions from an engine.
Amit Kumar, Abhilash Rai Sharama, Ajeet Kumar, Shiva Kumar   +3 more
doaj   +1 more source