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Show • The ability to provide measurements on the performance of practical devices which cannot easily be obtained by the manufacturer, but which will be used to increase the effectiveness of the burner. Thus, the facility must be able to accommodate a wide range of burners designed for different applications and the measuring system should satisfy the needs of industry. Characterization of a parameter which cannot be interpreted in practical terms will not attract the industrial user. General Design Considerations The BERL is designed to provide the following: • • • • • • • • • • • Clean boundary conditions suitable for modeling Optical access for point measurements, field measurements and visualization Precise positional control and digital positional readout translational freedom: x, y, z, and 8 convenient physical access to the combustion chamber ability to change the burner type, vary the inlet configuration, and the combustion environment (e .g. wall temperature ). convenient access to the burner and burner inlet. control over flow symmetry. control of all flow rates and composition of gas streams leading to the burner. flue gas recycle measurement and on-line data collection including all system inputs and outputs in terms of gas composition, flow rates 4 and temperature. • heat balance of the combustion system. The design for the BERL can be considered as five separate systems: Test cell The BERL is installed in a test cell occupying two floors with a penetration between them to permit translation of the combustion chamber between them. The lower, ground floor, is intended for maintenance and heavy equipment. The upper, or mezzanine, level houses the optical diagnostics and control room The control room provides a "clean" area to house the conventional diagnostic instrumentation, and the data acquisition system. Optical platform The optics are installed on a platform which can translate accurately in the x-y plane. z-axis translation is accomplished by moving the combustion chamber itself. Rotation around the vertical axis (8 direction) is accomplished by rotation of the burner relative to the combustion chamber. Furnace enclosure This is octagonal with removable wall panels to provide a range of boundary conditions including the extremes of entirely cold walls and hot, insulated walls in the near field of the burner. Replacement of wall panels with quartz windows provides almost complete optical access in the near burner region. Ancillary equipment Independent control of temperature, flow rate, and composition of several streams are provided. This also includes ventilation, exhaust and cooling of the furnace chamber. Diagnostics/Data collection On-line evaluation of process parameters is provided. This includes exhaust composition, radiative heat fluxes and high-speed video visualization. Also provided are advanced diagnostics which will enable temperature, species, and momentum measurements to be spatially resolved in three dimensions. |