Abstract: Methods and systems are disclosed for analyzing interference caused by electromagnetic and other radiated emissions. A system includes an antenna, a spectrum analyzer, a computer and associated software. Configurations are defined for frequency ranges and tests are defined to include one or more configurations. After stationing the system in a desired location, a test may be selected for execution. Because a test may include multiple configurations, each representing a different frequency range or other parameters, multiple frequency ranges may be scanned by the spectrum analyzer without further intervention by a user. A data set is created for each configuration in each test that is executed.

Abstract: A furnace of a pulverized coal firing boiler includes a coutant bottom and walls intersecting with the coutant bottom and extending generally vertically therefrom to enclose and define an interior combustion chamber. A first windbox disposed in a corner of the combustion chamber includes therein a vertical array of consecutively spaced coal compartments. A coal nozzle of the lowermost coal compartment of the vertical array is disposed at least ten feet from the intersection of the walls with the coutant bottom. A second coal nozzle is disposed within a second adjacent coal compartment at a first vertical spacing to the first coal nozzle; a third coal nozzle is disposed within a third adjacent coal compartment at a second vertical spacing to the second coal nozzle; and a fourth coal nozzle is disposed within a fourth adjacent coal compartment at a third vertical spacing to the second coal nozzle.