Preliminary communication
Influence of a Plenum Box Design on Uniformity of the Radial Air Jet Issuing From a Vortex Diffuser
Darko SMOLJAN
; Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Zagreb, Croatia
Igor BALEN
; Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Zagreb, Croatia
Abstract
Uniformity of the radial air jet issuing from the ceiling vortex diffuser
with side entry plenum box was investigated experimentally. Two
different cases of diffuser plenum box design were used: plenum box with
perforated plate and plenum box without perforated plate. Air jet velocities
were measured under isothermal conditions circumferentially around a
diffuser. It was found that the jets in both cases were radially asymmetric.
A simple method of quantifying radial asymmetry of the jet was proposed
and used to compare two cases. Analysis showed that the jet issuing from
the diffuser with plenum box that has a perforated plate is somewhat more
symmetric.
Keywords
Air jet asymmetry; Perforated plate; Plenum box; Vartex diffuser
Hrčak ID:
64433
URI
Publication date:
30.6.2010.
Visits: 2.534 *