Thesis (M.S. - Mechanical Engineering)--University of Arizona. / Includes bibliographical references.

Thesis (MSc)--University of Stellenbosch, 2007. / Bibliography. Also available via the Internet.

Thesis (Ph. D.)--University of Texas at El Paso, 2009. / Title from title screen. Vita. CD-ROM. Includes bibliographical references. Also available online.

Thesis (M.S.)--University of Texas at El Paso, 2009. / Title from title screen. Vita. CD-ROM. Includes bibliographical references. Also available online.

Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1993. / Vita. Abstract. Includes bibliographical references (leaves 76-87). Also available via the Internet.

Thesis (M.S.)--University of Texas at El Paso, 2009. / Title from title screen. Vita. CD-ROM. Includes bibliographical references. Also available online.

A new method of sea water desalination, Centrifugal Reverse-Osmosis (CRO), is developed from concept to patented design and functional prototype of capacity 11,355 litres of fresh water per day. CRO is shown to have significant benefits relative to the leading existing desalination technology, conventional reverse-osmosis. These benefits include: lower energy consumption, reduced initial and replacement membrane costs, lower noise levels and improved reliability. CRO is projected to show increasing cost efficiency as plant capacity increases. For a relatively large CRO plant, 65lm³ fresh water per day, the total cost of desalinated water is projected to be 25.9% lower than the total cost of water produced by a conventional RO plant of equivalent capacity. The current patented design requires further development in order to realize this potential. Toward this end, a computational and experimental study of rotor windage losses and an experimental study of fluid flow losses through the rotor are conducted. In addition a new method for the analysis of stresses in a filament wound rotor shell under combined centrifugal and pressure loading is developed. / Graduate

M. Ing. / Southern Africa faces an increasingly serious shortage of potable water and will continue to do so for the foreseeable future. Desalination is a process whereby dissolved solids are removed out of a contaminated water source to produce potable water. However, desalination carries an unavoidable energy cost per unit of potable water produced. Minimising this energy cost is an important goal towards making desalination a practical technology for widespread use. A desalination process is proposed by the author which is based on the injection of a brine spray into vacuum conditions. Although a complete desalination process is proposed, only the core components of the desalination process are investigated in the present study. The physical processes taking place in the core components are complex. Computational fluid dynamics is the numerical tool used to investigate the processes taking place in the core components. A commercial computational fluid dynamics code, augmented with user-programming, provides a simulation model for the core components. Due to the complexity of the investigated desalination process not all of its physical aspects are accounted for in the simulation. An analytical as opposed to experimental verification of the simulation is performed. The simulation model is used to perform a number of parametric tests. These tests are used to numerically investigate the effects of a number of process variables on the core components. The results of these parametric tests are presented and discussed

No description available.

This research report discusses a binary power generation and salt water distillation cycle that was the subject of a feasibility study at Florida Technological University. The thermodynamic equations are derived and the results of a parametric study to determine optimum fluid properties is presented. This cycle produces power at efficiencies significantly higher than that of conventional cycles and at the same time produces a significant amount of fresh water. The efficiency is maintained even at the high turbine outlet temperature necessary to produce fresh water. The important quantities in considering they cycle efficiency and the fresh water production are the heat of reaction and the absorption capacity. Changes in these quantities will have the greatest effect on the efficiency and the fresh water production. The results of the calculations and the parametric study are presented which compare the turbine outlet temperature with the efficiency and fresh water production for a conventional cycle and the binary cycle discussed here. Conclusions are presented that this cycle should be afforded more study by means of a model plant and experimentation to validate the results calculated.