Author: Robert R. TacinaPublisher:
ISBN:
Category :
Languages : en
Pages : 24
Book Description
Experimental Evaluation of Premixing-prevaporizing Fuel Injection Concepts for a Gas Turbine Catalytic Combustor
Author: Robert R. TacinaExperimental Evaluation of Premixing
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Experiments were performed to evolve and evaluate a premixing-prevaporizing fuel system to be used with a catalytic combustor for possible application in an automotive gas turbine. Spatial fuel distribution and degree of vaporization were measured using Jet A fuel. Three types of air-blast injectors, an air-assist nozzle and a simplex pressure atomizer were tested. Air swirlers with vane angles up to 30° were used to improve the spatial fuel distribution. The work was done in a 12-cm (4.75-in.) diameter tubular rig. Test conditions were: a pressure of 0.3 and 0.5 MPa (3 and 5 atm), inlet air temperatures up to 800°K (980°F), velocity of 20 m/sec (66 ft/sec) and fuel-air ratios of 0.01 and 0.025. Uniform spatial fuel distributions that were within +-10% of the mean were obtained. Complete vaporization of the fuel was achieved with airblast configurations at inlet air temperatures of 550°K (530°F) and higher. The total pressure loss was less than 0.5% for configurations without air swirlers and less than 1% for configurations with a 30° vane angle air swirler.
Experimental Evaluation of Fuel Preparation Systems for an Automotive Gas Turbine Catalytic Combustor
Author: Robert R. TacinaPublisher:
ISBN:
Category : Fuel
Languages : en
Pages : 146
Book Description
Numerical and Experimental Evaluation of Preheated Premixed Flames at Lean and Rich Conditions
Author: Joseph Edward GibsonExperimental and Numerical Study of Dynamics of Premixed Hydrogen-Air Flames Propagating in Ducts
Author: Huahua XiaoPublisher: Springer
ISBN: 3662483793
Category : Technology & Engineering
Languages : en
Pages : 162
Book Description
This thesis offers important new insights into and a deeper understanding of premixed flame instabilities and hydrogen safety. Further, it explains the underlying mechanisms that control the combustion processes in tubes. The author’s previous scientific accomplishments, which include a series of high-quality publications in the best journals in our field, Combustion and Flame and International Journal of Heat and Mass Transfer, are very impressive and have already made a significant contribution to combustion science.
Experimental Evaluation of Two Premixing-prevaporizing Fuel Injection Concepts for a Gas Turbine Catalytic Combustor
Author: Robert R. TacinaNASA Technical Memorandum
Author: Propagation and Extinction Studies of Laminar Lean Premixed Syngas/Air Flames
Author: Yang ZhangPublisher: Springer
ISBN: 9811046158
Category : Technology & Engineering
Languages : en
Pages : 142
Book Description
This thesis presents pioneering experimental and numerical studies on three aspects of the combustion characteristics of lean premixed syngas/air flames, namely the laminar flame speed, extinction limit and flammability limit. It illustrates a new extinction exponent concept, which enriches the combustion theory. Above all, the book provides the following: a) a series of carefully measured data and theoretical analyses to reveal the intrinsic mechanisms of the fuel composition effect on the propagation and extinction of lean syngas/air flames; b) a mixing model and correlation to predict the laminar flame speed of multi-component syngas fuels, intended for engineering computations; c) a new “extinction exponent” concept to describe the critical effects of chemical kinetics on the extinction of lean premixed syngas/air flames; and d) the effects and mechanism of the dilution of incombustible components on lean premixed syngas/air flames and the preferential importance among the thermal, chemical and diffusion effects.
Author: 
Author: Artur Kaiser