Cooling strategies

Cooling strategies begin at the level of the site. Vegetation, especially trees, provides both shade and evaporative cooling through moisture expiration through leaves. Pools, fountains, waterfalls/cascades, sprays and other water features all add to the evaporative cooling effect. In studies of 'heat island effect' generated by buildings it was found that clusters of trees within the heat island can produce a localised drop in temperature of 2-3°C.

Chilled ceilings are a method of providing cooling not necessarily associated with air flow systems. The advantages of the system are, first, that thermal stratification affects in a room are reduced and, second, that a chilled ceiling counterbalances the effect of thermal buoyancy, that is, rising warm air. The ceiling may be chilled using a refrigerant. The more

Figure 12.14

Displacement ventilation and natural light in the Reichstag

Air plenum Air treatment

Water Source Natural Cooling Effect

Air plenum Air treatment environmentally benign method is to employ mechanical night-time cooling to precool exposed floor slabs. An alternative system involves embedding pipes in concrete floors to carry cooling water, usually from a ground source.

Getting Started With Solar

Getting Started With Solar

Do we really want the one thing that gives us its resources unconditionally to suffer even more than it is suffering now? Nature, is a part of our being from the earliest human days. We respect Nature and it gives us its bounty, but in the recent past greedy money hungry corporations have made us all so destructive, so wasteful.

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