TABLE OF CONTENTS - The Professional Green Building Council

Theme C: Education and Market TransformationAccording to the these values it is possible to verify that, when the courtyard 01becomes the windward direction, what happens mostly for South winds, the airvelocity is already satisfactory, ranging from 1.0 to 1.5m/s on average at pedestrianlevel, but decreasing since the height increases. The same results can be visualizedin the bottom right of the Fig. 15 previously mentioned.In this case, the introduction of the underground system would raise the airvelocity in around 0.5m.On the other hand, the simulation for North winds (from the left side of bothimages showed on Fig. 16), indicates a concentrated still air area on the courtyard01, now on the leeward area (the bottom right side). In this case, the undergroundconnection seems to be efficient improving air velocity on the leeward, whatduring summer season will benefit pedestrians comfort levels in this area.Figure 16: Building cross-sections for North wind. Results ranging from 0.0 –5.0m/s.Now, the results displayed on the chart 02 demonstrates that, for the case 01, theair stands still to less than 0.5m/s along with the distance taken from the wall, evenfor different heights. With the addition of the underground system, the air velocityincreases considerably, mostly for distances beyond 1m from the building wall,maintaining it in a range from 1.0 to more than 2.0m/s at pedestrian height.630