Design of medium pressure nozzles for cooling towers

[摘要] ENGLISH ABSTRACT: This project concerns the investigation of parameters controlling the behaviour of full-conespray nozzles of the type used in cooling towers.In the present study large medium pressure hollow and full cone nozzles were investigated. Aliterature survey provided insight into the relationships between the nozzle dimensions andtheir spray characteristics, while equations found in the literature were used to correlate theexperimental data.It was found that the spray cone angle of hollow cone nozzles could be manipulated by usingrounded orifice outlets and this finding lead to the development of a uniquely profiled outletthat actually produces a square spray pattern.More experimental work was done to determine the relationship between the central jet of afull-cone nozzle and the other major nozzle dimensions. These results were then correlated andformulated into a set of guidelines for designing full-cone nozzles.

[发布机构] Stellenbosch University