In search of Eden.

The Eden project consists of two massive 'biomes' situated at the bottom of a former clay pit in Cornwall, UK. They mimic a 'humid-tropic' and a 'warm-temperate' environment and each houses a wealth of plant life. The aim is to let plants grow naturally in a climate designed to mirror nature as closely as possible. A Horticultural Management System monitors temperature conditions and there is a separate humidity control system. There are 24 Moducel air handling units in the humid tropics biome. Air from the AHUs is forced into the biomes via ductwork linked to stainless steel nozzles. Fresh air in injected at low level and tempered and fresh air around the perimeter. The nozzles have been positioned so that the air is blown up the surface of the biome to induce large air circulation currents. Natural ventilation can be provided when needed through glass louvres at low level, or by opening five haxagons broken into six 'petals' in the roof of the biomes.