Design and performance of a capacitance probe for monitoring averaged parameters and individual events in a high-temperature, fluidized-bed reactor

Technical Report · Thu Jul 01 00:00:00 EDT 1982

OSTI ID:6885851

Fasching, G E; Goff, D R; Maxfield, D A

Improved instrumentation is needed both for operation of and research into the mechanics of fluidized beds. The capacitance probe described in this report has the capability of measuring overall bed parameters such as height and density on a time-averaged basis as well as high-speed measurements that can yield insight into the details of the fluidized bed itself. This segmented probe uses guarded electrodes to control the portion of the bed that the active segment is sensitive to and high-frequency excitation to improve the ratio of capacitive to resistive current. Phase-angle detection is used to cancel the resistive component of the detector current and to separate the capacitive component. The high-speed data is processed along with sample data showing some of the potential measurements that can be made in fluidized beds.

• Research Organization: TRW Energy Engineering Div., Morgantown, WV (USA)
• DOE Contract Number: AC21-81MC16050
• OSTI ID: 6885851
• Report Number(s): DOE/MC/16050-1197; ON: DE82020148
• Resource Relation: Other Information: Portions of document are illegible
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
47 OTHER INSTRUMENTATION
FLUIDIZED BED
MONITORING
PERFORMANCE
MEASURING INSTRUMENTS
DESIGN
BUBBLES
CONFIGURATION
DATA PROCESSING
DENSITY
FLOW RATE
FLUIDIZED-BED COMBUSTORS
HEIGHT
MASS TRANSFER
MOTION
COMBUSTORS
DIMENSIONS
PHYSICAL PROPERTIES
PROCESSING
421000* - Engineering- Combustion Systems
440300 - Miscellaneous Instruments- (-1989)