Riyadh - School of Architecture

4. Vegetation6. Earth Tunnel Cooling and Sand TrapYU Ka Hang Ada 1155016050The outdoor area is full of greenery. Shrubs and trees were employedto provide sun shading, cool down the air and to mitigate the effects ofthe harsh climate.This is a simple mechanism to intake air to underground in order to mitigate the temperature. But in thesite, modification of the system is needed regarding sand and dust in the air.A 60 meters long cooling tunnel is built underground. And to filter the sand and dust, the tunnel was designedin a labyrinth way. Many pieces of sand trap are added in the tunnel. The sand traps are just likewall structure. When air pass through, these walls allow the sediment of sand and at the same time cooldown the air by slowing down its flowing speed. And at the end of the tunnel, the spray of cool water canfurther filter the finer dust and cool down the air. (*The spray of the cool water is supported by the solarpanels, which will be discussed in part 7) This simple system can filter the sand dust and cool down theair by 9°C.AIR DUCTEARTH TUNNELAIR FILTERING AND COOLING SYSTEMSOLAR PANEL5. Traditional Craftmanship - Inter-woven vegetation fiberAlthough walking on the outdoor corridor will have a higher possiblitiesto expose under sunlight, the employment of woven curtain. Becausethe cover of the corridor can only shade the high angle sun light, so thecurtains are added to shade the low angle sun light and the sun lightafter diffusion will be softer and provide enough natural light to indoor.The weaving technique is a tradition skill of bed construction, so theuse of this local craftmenship can save cost.7. Solar Panel900m2 of solar panels wereinstalled. Making use the naturalcondition of Sudan, 3 600 KWcan be generated without 1 gramof CO2 emission. Together withthe panel, there are copper tubesto heat up the water to 80-90°C.And there are also two chillingmachines supported by the solarenergy to cool down the water to7°C.(One of the purpose is to cooldown the air from earth tunnel)