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An optimal working environment raises the productivity of people. Chilled ceilings by Armstrong help in the attainment of this objective:
 
Chilled ceilings – a new air-conditioning concept
Operating principle of a chilled ceiling
Applications
Technical information
  
Chilled ceilings – a new air-conditioning concept
Most conventional chilled ceilings operate via the forced air principle. Warm air is re-circulated and replaced by recycled and cooled air. This exchange results in a draught of cool air. An additional problem with this system is what is known as the "sick building syndrome". Non-maintained air ducts of an air-conditioning system can blow bacterial pathogens into a room thereby contaminating the air. This can lead to the rapid spread of diseases.
 
Chilled ceilings based on radiant cooling technology allow for an entirely new way of air treatment – a method that solves both problems. The ceiling panels of radiant cooling systems contain chilled water which flows through tubing mounted on the rear of the ceiling panels. The ceiling panels function as heat exchangers between the room air and chilled water. The ceiling absorbs heat generated by the heat sources in a room and exchanges it with the circulating chilled water.
 
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Operating principle of a chilled ceiling
From a technical viewpoint, a radiant cooling ceiling is simply a large heat exchanger that is suspended from a room's ceiling. It exchanges energy via the room's radiation and convection.
 

 
Chilled ceilings impress, not only because their manner of air conditioning is healthier and more pleasant, but also because of energy balance advantages. As such, cooling systems based on the forced-air principle require more transportation energy than chilled ceilings, where water is used as the transportation medium.
 
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Annual power consumption for various systems

 
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Applications
The cool surface of a radiant ceiling is an ideal radiation partner for skin. It makes possible the pleasant, draught- and noise-free air conditioning of rooms.
Cooling elements are often employed in offices and administration buildings with single and open-plan offices, in shopping centres and in small shops, in research and development laboratories, production and assembly halls, hotel rooms, service halls and hospitals.
 
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Technical information
The capacity of cooling ceilings is influenced by various factors. Some of the most important of these are air distribution, the differences in room temperature, the size of the active area, the temperature of the room perimeter surface and the position of heat loads in the room, as well as the design of the chilled ceiling.
As architectural design can affect thermal comfort and general well-being, radiant cooling systems are designed to allow for a high degree of architectural freedom.
Our
advisers will be pleased to provide you with further information about capacity, and answer any questions concerning the installation and architecture of our chilled ceilings.
 
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