Analytical and experimental describing the heat transfer in metal quenching with water sprays and jets

Fang, Y.; Sabariman, I.; Specht, E.

dc.contributor.author	Fang, Y.	en
dc.contributor.author	Sabariman, I.	en
dc.contributor.author	Specht, E.	en
dc.date.accessioned	2017-08-28T07:08:17Z
dc.date.available	2017-08-28T07:08:17Z
dc.date.issued	2016	en
dc.description	Papers presented to the 12th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Costa de Sol, Spain on 11-13 July 2016.	en
dc.description.abstract	An analytically solvable mathematical model is presented to estimate heat transfer quantities in the film boiling region of metal quenched with water sprays. The model is based on the hydrodynamics of a single droplet which is separated from the metal by a vapor film. The temperature profile within the droplet is calculated as a semi-infinite body because of the short contact time. It is validated with our own experimental results and those from literature. The influence of droplet size and velocity, spray flux, surface temperature, and the salinity level are discussed. The heat transfer in the whole boiling regime was measured for metal sheets made of inconel, nicrofer, nickel, aluminum alloy and copper. The sheets, with a size of 200 mm × 200 mm and a thickness from 2 to 4 mm, are heated above Leidenfrost temperature to study the influence of various quenching parameters.
dc.format.extent	5 pages	en
dc.format.medium	PDF	en
dc.identifier.uri	http://hdl.handle.net/2263/62006
dc.language.iso	en	en
dc.publisher	HEFAT	en
dc.rights	University of Pretoria	en
dc.subject	Water sprays and jets	en
dc.subject	Heat transfer	en
dc.subject	Metal quenching	en
dc.title	Analytical and experimental describing the heat transfer in metal quenching with water sprays and jets	en
dc.type	Presentation	en