Abstract
Abstract
A lack of information about the operating characteristics of a jetting pressurized fluidized-bed combustor (PFBC) can be attributed to the environment (1227 K and 2.93 MPa) in the bed. To gain information about a PFBC's operation, a pressure and temperature probe has been designed to measure the small pressure fluctuations and bulk fluid temperature in the feed jet area. This research concentrates on the structural design and analysis of a multi-tier dual-static-pressure and temperature probe system. Each tier contains two branches placed one above the other in the axial direction; they are arranged to measure the differential pressure and temperature at a given radial and axial location in the feed jet. Each branch is a structural tube member, of 6.35 mm outside diameter, with a smaller tube, of 1.07 mm inside diameter, placed inside for the pressure measurement. A thermocouple is placed on the upper branch of each tier for the temperature measurement. Inconel 600 alloy is selected for the structural and pressure measurement tubing and thermocouple sheathing material because of cost, availability and manufacturing concerns. This paper presents the results of the structural design of the probe system to be fitted in the bed.
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