Water is the heat transfer medium in this technology, circulating at the relatively high temperature of 16°C. Chilled beams create convective air movement to cool a room. In chilled ceilings a flat soffit panel provides radiant and convective cooling.
Figure 3.10 Hollow slab natural ventilation (courtesy of BRE)
Chilled beams can provide about 60 W/m2 of cooling water at 16°C and a room temperature of 26°C.
Chilled ceilings provide roughly 40 W/m2 assuming 50% active area, otherwise as for chilled beams.
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