A parameter study was conducted to characterize the combustion of a hydrogen-rich syngas fuel in swirl-stabilized flames in a gas turbine model combustor with optical access. Three thermal power-loadings were tested and equivalence ratio was varied in a range of Φ ≈ 0.4 - 0.6 by changing the fuel flow rates at constant air flow.Velocity, heat-release and flame zone shape were studied using optical diagnostics including PIV, OH-LIF and OH* chemiluminescence imaging. A main goal of this work was the establishment of an experimental data base for the validation of numerical simulations.The syngas burned stably and without significant thermo-acoustic oscillations at all operating conditions. The inner recirculation zone is identified as a key stabilization mechanism for this burner. This is consistent with previous studies for syngas mixtures with a high CO content in the same burner. Changes in equivalence ratio and the thermal power of the flame had only a small impact on the overall flame shape and the burning behavior.
Food items are often perishable and have a limited shelf life. Legislation requiring a declaration of “Best before” date and the interest of the manufacturer to assure the quality of his products within the declared time makes a frm control of the adulterating reactions in the product highly desirable, A thorough knowledge of the aging mechanism allows the manufacturer to take proper actions to prevent rapid decay.Microcalorimetry is a very useful tool for the measurement of the degree of aging of a product and also for the elucidation of the aging mechanism. This can sometimes be a formidable task in such a complex matrix as a food product.
用力可AC600量热仪,苯甲酸为标样分析The gross calorific value of coal, a solid fossilhydrocarbon fuel material, is most often used whencalculating the total calorific value for a quantity ofcoal for fuel value purposes, or when determining theclassification rank of the coal material. The grosscalorific value and sulfur value of the coal materialcan also be used to calculate whether or not the coalmaterial meets regulatory requirements for industrialfuel use.