Thesis (MScEng)--Stellenbosch University, 1997. / One copy microfiche. / ENGLISH ABSTRACT: This project concerns the investigation of parameters controlling the behaviour of full-cone
spray nozzles of the type used in cooling towers.
In the present study large medium pressure hollow and full cone nozzles were investigated. A
literature survey provided insight into the relationships between the nozzle dimensions and
their spray characteristics, while equations found in the literature were used to correlate the
experimental data.
It was found that the spray cone angle of hollow cone nozzles could be manipulated by using
rounded orifice outlets and this finding lead to the development of a uniquely profiled outlet
that actually produces a square spray pattern.
More experimental work was done to determine the relationship between the central jet of a
full-cone nozzle and the other major nozzle dimensions. These results were then correlated and
formulated into a set of guidelines for designing full-cone nozzles. / Digitized at 300 dpi Colour PDF format (OCR), using ,KODAK i 1220 PLUS scanner. Digitised, Ricardo Davids on request from Corinna 01 October 2014 / AFRIKAANSE OPSOMMING: Hierdie projek behels 'n studie van belangrike parameters in volkegel sproeimondstukke soos
gebruik in koeltorings.
In die huidige studie word groot mediumdruk holkegel en volkegel sproeimondstukke
ondersoek. 'n Literatuurstudie het die nodige insig verskaf omtrent die verwantskap tussen
mondstuk dimensies en hul spuitkarakteristieke, terwyl vergelykings uit die literatuur gebruik is
om die eksperimentele data te korreleer.
Dit was gevind dat die sproeir kegelhoek van die holkegelmondstuk verander kon word deur
gebruik te maak van geronde uitlate. Afleidings wat gemaak is het gely tot die ontwikkeling
van 'n unieke geprofielde uitlaat wat 'n vierkantige sproeipatroon gelewer het.
Bykomstige eksperimentele werk is gedoen om die verwantskap tussen die sentralestraal van 'n
volkegelmondstuk en die ander hoof mondstukdimensies te bepaal. Die reultate is verwerk om
riglyne vir die ontwerp van vierkantige patroon volkegel mondstukke daar te stel.
| Identifer | oai:union.ndltd.org:netd.ac.za/oai:union.ndltd.org:sun/oai:scholar.sun.ac.za:10019.1/55448 |
| Date | 05 1900 |
| Creators | Thacker, John Edward |
| Contributors | Erens, P. J., Stellenbosch University. Faculty of Engineering. Dept. of Mechanical and Mechatronic Engineering. |
| Publisher | Stellenbosch : Stellenbosch University |
| Source Sets | South African National ETD Portal |
| Language | en_ZA |
| Detected Language | Unknown |
| Type | Thesis |
| Format | 91 p. : ill. |
| Rights | Stellenbosch University |
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