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Show As part of the CRADA, all Sandians involved with BERL have signed a non-disclosure agreement to protect proprietary information and, if necessary, a similar agreement may be made with EER employees. 2.5 Facility Description The BERL is a two-story laboratory located in Sandia's Combustion Research Facility. The laboratory area and control room are on the mezzanine (Figure 1). The furnace/shuttle assembly protrudes through a hole in the mezzanine floor and is surrounded on three sides by the optical table traverse system. The first floor (Fig. 1) houses the shuttle frame, steam generator and air preheater control unit. Both the furnace and the optical tables are supported on traverse systems. The furnace sits on the shuttle which allows it to move vertically. The optical tables rest on the horizontal traverse which moves the tables parallel to the floor. The combination of these two traverse systems allows accurate positioning of in-furnace and optical diagnostics virtually anywhere in the furnace. Figure 2 (section A-A from Figures 1 and 2) shows the furnace / shuttle and optics table configuration. The furnace enclosure (Figure 3) is octagonal in cross-section and assembled with spool sections 13 inches tall and 42 inches inside diameter. Depending on the desired aspect ratio, the furnace can be configured to be up to seven sections tall. Any of four types of interchangeable wall panels can be placed in the flat regions of the octagon. The furnace can be fitted with either refractory-lined or steel-faced, water cooled panels or a combination of the two to create "low", "high" or moderate heat extraction boundary conditions. The other two panel types are large windows which permit access for optical diagnostics and small ports which allow access by conventional probes. The facility can accommodate up-fired burners with firing rates ranging from 100 MBtulh to 2.5 MMBtulh. Air preheat, flue gas recirculation and steam injection are available in addition to the modifiable heat extraction boundary conditions. Table 1 lists the facility design specifications and the verified capabilities to date. Furnace parameters are monitored and recorded by a PC based data acquisition system (DAS). The DAS was written by Sandia and can be configured to meet user requirements. The design of the furnace/shuttle assembly allows for easy exchange of burners. The furnace base plate (Figure 4) is "permanently" bolted to the bottom of the furnace. A new burner mounting plate that bolts into the center of the base plate is either an integral part of, or built to mate with, the burner. Figure 5 is a section view of the furnace showing both burner mounting configurations. The requisite dimensions of the burner mounting plate are shown in Fig. 4. The diameter d, is established by the burner dimensions. The height h, will be determined such that the burner exit plane is 9 inches above the bottom of the furnace base plate. The air preheater can be located up to five feet below the furnace base plate to accommodate long burners. There is a 54" square area in a horizontal plane slicing through the shuttle to accommodate burners. -7- |