While summer in the northern hemisphere is heating up, Norrsken Kigali House in Rwanda is staying cool. Native plants shade heat absorbing surfaces, like concrete and asphalt, and release water vapor, reducing the urban heat island effect for the surrounding area, and reducing the ground surface temperature in the garden by 10°C (18ºF). Terracotta tiles are optimized to reduce solar heat, leading to smaller cooling systems, lower energy consumption, and more comfortable people, while still allowing for ample daylight and views out to the forested garden. Maintaining a suitable temperature in your workspace has shown to improve productivity and reduce mental fatigue. At 30°C (86ºF) performance is 9% lower than at 22°C (72ºF). With nature based solutions and passive design strategies we can reduce cooling demand and achieve excellent thermal comfort. Captured recently by Iwan Baan, the landscape has had three years to flourish, encapsulating the garden surrounding Norrsken Kigali House. Reducing energy consumption and cooling system size, reduces upfront and operational cost and carbon,providing a more resilient cooling strategy that will still perform if back up power runs out. This can improve user wellbeing and doing, thinking, education, and healing capacity. Connecting humans to the more than human environment that we rely on - plants, sun, water, wind.
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