No description available.

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.

Thesis (M. Phil.)--University of Hong Kong, 2009. / Includes bibliographical references (leaves 69-71). Also available in print.

The purpose of this developmental project was to design and fabricate a vertical reciprocating conveyor in order to eliminate the process of manually carrying 27 pound containers of plastic resin up and down a flight of offset space saver stairs. This project took place and was built for Phoenix Closures Incorporated. The conveyor was designed and built in house because there are no commercially available vertical reciprocating conveyors available that meet the necessary requirements. The capabilities of the proposed vertical reciprocating conveyor are not limited to the carrying of the containers but designed to carry vacuum cleaners, tool boxes, and spare parts to the mezzanine. The vertical reciprocating conveyor is designed for a greater capacity then the 27 pounds the container of plastic resin weighs, but the safety systems are not designed in a way that would allow the conveyor to lift a greater amount of weight.

No description available.

No description available.

Thesis (Professional Degree)--University of Missouri, School of Mines and Metallurgy, 1937. / The entire thesis text is included in file. Typescript. Title from title screen of thesis/dissertation PDF file (viewed April 22, 2010) Includes bibliographical references (p. 52-58) and index (p. 59-60).

published_or_final_version / Mechanical Engineering / Master / Master of Philosophy

No description available.

The thesis deals with discrete simulation of a intersection between the operation of the bodyshop and paintshop in ŠKODA AUTO s. r. o. in Mladá Boleslav.In this thesis is described conveyor technology used in the area addressed, procedure in the development of a simulation model and tool TriCad, which was used as a support for creation of the simulation model.Simulation model is tested for a achievable throughput by experiments. Results of experiments are providing recommendations.