Passive chilled beams

Passive chilled beams CONTENTS Passive Beam Positioning 5

VPK passive chilled beams Description The ceiling-mounted VPK series passive chilled beams are used without an air supply and are used to reduce heat loads within a zone. Passive chilled beams use water to carry cooling power to the various areas which is advantageous as the cooling pipes save on energy and space, in comparison to all-air systems. Additionally the temperature of each room or independent area can be controlled by adding a 2- or 3-port valve to the terminal unit controlled by the respective area PIR or thermostat control. Passive chilled beams may be installed flush with a drop...

Operating Principles When a bodies temperature is higher than the ambient temperature, it will emit heat; this process can take place in three different ways: conduction, convection and radiation. Heat is transferred from the passive chilled beams mainly by natural convection and only very minimally by radiation. Hot air in contact with the cold battery surface flows downward through the beam and into the room. Convection Passive chilled beams are not connected to the air ventilation system, which can be supplied from either high or low level. The air terminal layout must be carefully designed,...

VPK-E Overall Dimensions

The technical data for the passive chilled beams have been obtained from laboratory tests performed as per UNE-EN 14518. Symbols Q (L/H) Tr (°C) Ak (%) P (W/m) Twin (°C) Twout (°C) ATwm ATRWm (K) Kp APw A B C T Water flow Room temperature Perforated plate, free area Cooling power per metre Water inlet temperature Water outlet temperature Mean cooling water temperature Temperature difference between ambient air and mean cooling water Water pressure drop factor Pressure drop in water (AP= Q/Kp)A2 Beam length, in m Beam width, in m Beam height, in m Beam-to-ceiling distance

Product Codes VPK VPK-E VPK-MS Passive beams with perforated plate Passive beams without perforated plate Multiservice passive beams Example: VPK-E-2000-RAL-9010 Passive beams without perforated plate, length 2000 mm, RAL-9010 white finish. Standard finish in RAL-9010 white RAL finish to be defined VPK Technical Specifications VPK passive chilled beams, of length L mm and width B mm, for installation in modular drop ceilings. This unit includes an interior battery in horizontal position (2 tubes) for cooling, copper pipes with gas-type threaded connections (outer diameter, 12 mm) and an aluminium...

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