Use this URL to cite or link to this record in EThOS: | https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.379820 |
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Title: | Instrumentation and control for minimum energy consumption in pneumatic conveying | ||||
Author: | Beck, C. M. |
ISNI:
0000 0001 3453 0059
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Awarding Body: | University of Bradford | ||||
Current Institution: | University of Bradford | ||||
Date of Award: | 1986 | ||||
Availability of Full Text: |
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Abstract: | |||||
Pneumatic conveyors have been used for the transportation of solids
for many decades. Their design is substantially empirical, and
because they run with almost no instrumentation or control, large
safety factors are employed to ensure long-term safe and reliable
conveying under all envisaged conveying conditions. The resulting
excessive conveying velocity leads to increased energy consumption,
pipeline wear and solids breakdown. The aim of the work reported in
this thesis was to develop an instrumentation and control system which
provides minimum cost conveying for a variable solids feedrate and
composition, in a lean phase vertical pneumatic conveyor.
Incipient blockage of the pipeline is detected through measuring
solids velocity by cross correlation of signals from electrodynamic
transducers. This solids velocity measurement system is modelled, and
laser techniques independently confirm the experimentally measured
solids velocity and profile in the pipe. A model of the pneumatic
conveyor is described which is used in the design of a feedback
control scheme. By controlling the pilot plant to convey at minimum
safe solids velocity, independently of any solids feedrate change,
energy savings of up to 45% are shown to be possible.
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Supervisor: | Not available | Sponsor: | Not available | ||
Qualification Name: | Thesis (Ph.D.) | Qualification Level: | Doctoral | ||
EThOS ID: | uk.bl.ethos.379820 | DOI: | Not available | ||
Keywords: | Pneumatic conveyor efficiency | ||||
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