<p> An experimental investigation is reported for water boiling at atmospheric pressure on a copper surface. Bubble nucleation at an artificial site was observed for five heat fluxes between 11,000 and 20,000 BTU/Hr Ft^2, and subcooling from 0° to about 30°F. Using Wiebe's correlation for heat flux and superheat layer thickness, four mathematical models were tested. The measured results are found to provide excellent agreement with the Han and Griffith model for bubble nucleation.</p> / Thesis / Master of Engineering (MEngr)

<p> An analysis of reported and theoretical methods of precipitating calcium carbonate from aqueous solution is presented, with emphasis on methods that generate the anion in the presence of Ca(++) ion.</p> <p> A new CaCO3 precipitation method referred to as precipitation from quasi-homogeneous solution and suitable for digital processor control is developed. This technique is then used to investigate the effects of ionic strength and Mg(++) ion on calcium carbonate nucleation.</p> <p> A minicomputer based interactive information system, capable of automatic data logging and processing of experimental results in studies using processor controlled precipitation of CaCO3 from quasi-homogeneous solution, is implemented and tested.</p> / Thesis / Master of Science (MSc)

No description available.

No description available.

No description available.

No description available.

No description available.

No description available.

No description available.

No description available.