Natural ventilation of a single flat building

Abstract EN

This paper illustrates experimental and theoretical results of a naturally ventilated building model.

The test model was fabricated using Perspex glass to simulate actual single flat building model with a scale 1 : 30.

This model was provided with a heating plate at the roof to simulate the heat gain by the solar radiation.

The model was subjected to air flow in a wind tunnel to study the effect of the different air flow directions with the main façade of the model (natural ventilation through openings) on the average temperature and convective heat transfer coefficient of the heated ceiling.

The reduction of average temperature of the ceiling indicates the good ventilation (good air flow) inside the model.

A smoke tunnel visualization technique was used to give a viewer white smoke lines inside the model, also a CFD computer software package was used to predict the velocity distribution inside the models in a contour form for different air flow direction.

The results present the importance of natural ventilation in reduction of the ceiling temperature and in turns reduce the indoor temperature.