Visualization of measured three dimensional well mixed zones of temperature in a ventilated space.

A new model concept has been developed to model the three dimensional energy and mass transfer in an imperfectly mixed fluid. The model permits to predict the dynamic behaviour of the volumetric concentration of heat flow, mass flow and fluid flow. A laboratory test installation has been built to analyse the model capabilities to predict the dynamic behaviour of the air flow pattern within a ventilated space in order to control the energy and mass transfer in the ventilated space. This test installation permits to measure and to visualise well mixed zones of mass and energy concentration and gives the opportunity to visualise the air flow pattern in a quantitative way. Experiments have been done with this test installation in order to test the model concept. The objective of this paper is to explain the possibilities of the test installation and the different measurement techniques that are used. Furthermore, experimental results will be given.