Active Chilled Beams | Hevac
  • SEAI Triple E

Active Chilled Beams

Active Chilled Beams View Large Image

A well designed chilled beam installation can bring about significant benefits. The chilled beam has important considerations when compared to fan coil units.

  • Very good comfort levels can be achieved utilising chilled beams. The air velocities are low within the occupied space and since the supply air temperature is around 16 there is not a high temperature gradient with chilled beams.
  • One of the main advantages of chilled beams is the low level of maintenance required. This generally leads to lower whole life cycle costs as can be seen in the summary below;

-        No condensate pump

-        No fans

-        No motors

-        No moving parts


-        No filter

-        No consumables

-        Simple on/off control valves

-        Long life span


  • Noise levels are also very low with NR35 being easily achieved in the absence of a fan in the unit.
  • Elevated chilled water temperatures of 14/17 are utilised as opposed to lower temperatures usually associated with fan coils. This provides a further opportunity for “free cooling” thereby reducing energy usage.
  • Active chiiled beams can accommodate a wide range of cooling loads up to 200w/m2.
  • Usually a large quantity of fan coils are used even on an average sized project so the total kW consumption of these terminal fan units can be significant particularly where they are left running all the time (i.e. constant speed as opposed to variable volume VAV fan coils).
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