Particle velocity and solid volume fraction measurements with a new capacitive flowmeter at the Solid/Gas Flow Test Facility. [Glass beads]

Technical Report · Fri Aug 01 04:00:00 EDT 1986

DOI:https://doi.org/10.2172/6918929· OSTI ID:6918929

Bobis, J P; Porges, K G.A.; Raptis, A C; Brewer, W E; Bernovich, L T

The performance of a new capacitive flowmeter has been assessed experimentally in a gas-entrained solid flow stream at the Argonne National Laboratory (ANL) Solid/Gas Flow Test Facility (S/GFTF) for solid feedrates in the range of 0.5 to 2 kg/s and solid-gas loadings up to 22, corresponding to a range of solid volume fractions extending from 0.004 to 0.016. Two types of nonintrusive instruments using the capacitive principle were fabricated at ANL and installed in the horizontal leg of a 12.3 m test section to sense the solids. An improved electrode geometry designed to maximize the coverage of the duct interior while minimizing the readout error due to a nonuniform electric field, was incorporated for one spoolpiece with the sensing electrodes on the outside surface of a ceramic liner and for another spoolpiece with the sensing electrodes mounted flush with the duct inside surface. The capacitive instruments measured the solid volume fraction and the average particle velocity. The results are compared with time-of-flight measurements of short-lived radioactive particles that duplicate closely the size and density of the 1000..mu.. glass beads used in these flow tests. Results show that the solid volume fraction measurements agree with the theoretical models presented and that the particle velocity deduced from the cross-correlation scheme agreed to within 5% of the irradiated particle velocity technique for the 21 to 31 m/s range generated with the S/GFTF. 43 refs., 36 figs., 19 tabs.

• Research Organization: Argonne National Lab., IL (USA)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6918929
• Report Number(s): ANL/FE-86-4; ON: DE87004556
• Country of Publication: United States
• Language: English

Related Subjects

440300* -- Miscellaneous Instruments-- (-1989)
47 OTHER INSTRUMENTATION
ANEMOMETERS
DENSIMETERS
DETECTION
DOPPLER EFFECT
FLOWMETERS
FLUID FLOW
GAMMA DETECTION
GLASS
IRRADIATION
ISOTOPE APPLICATIONS
LASERS
MEASURING INSTRUMENTS
METERS
PERFORMANCE TESTING
PNEUMATIC TRANSPORT
RADIATION DETECTION
SOLIDS FLOW
TEST FACILITIES
TESTING
TRACER TECHNIQUES
TRANSPORT
VELOCIMETERS
VELOCITY