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Passive chilled beams QPVA and QPBA

Passive chilled beams QPVA and QPBA
6Pages

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Passive chilled beams QPVA and QPBA Passive chilled beams QPVA and QPBA Functions • Cooling • Controls The Flexicool® QPVA and QPBA passive chilled beams provide for the cooling in a room. QPVA (width 570 mm ) and QPBA (width 430 mm ) are broad passive chilled beams. The passive chilled beams are either ceiling installed, in which case they lie flush with the suspended ceiling, or free space installed without ceiling. The passive chilled beams are available in lengths 1,2 - 4,2 m at 60 cm intervals. In installations with passive chilled beams the air is supplied by means of separate supply air valves. Quick Selection Cooling effect in W incl supply air Product Facts • Passive chilled beams QPBA and QPVA for ceiling installation or free space installation • Coil and casing are easy to clean • Adapted control and adjustment equipment and lighting available as accessories • Quick and easy installation with suspension rods. Product code example 430 mm wide passive chilled beam QPBA manufactured by Fläkt Woods, length 240 cm. Chilled beam QPBA-240-1 for individual installation. Beam length in cm The diagram shows the approximate cooling effect, Ptot in W with water flow, qv = 0,05 l/s difference between room air temperature and average water temperature = 8 °C and max sound pressure level LA10 = 30 dB(A). 1) Fläkt Woods Specifications are subject of alteration without further notice.

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Passive chilled beams QPVA and QPBA Main data, range, variants and accessories Main data for QPBA and QPVA Placing of coil in the casing The circulating room air flow through the chilled beam is determined by the temperature difference (actually density difference) in- and outside the beam, together with beam height. In the standard construction, the casing length is 10 cm longer than the effective length (coil length). The coil is placed centrally. To adapt to room dimensions, or to obtain space for control and adjustment equipment or for an overhead connection of supply air and water, the...

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Passive chilled beams QPVA and QPBA Gable, series connection Gable, series connection Flakt Woods Specifications are subject of alteration without further notice.

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Passive chilled beams QPVA and QPBA Technical data - cooling L eff Effective length = coil length, m Pk Cooling effect, W or W/m Leff Pk0,05 Cooling effect with water f I ow 0.05 l/s, Atw Temperature difference between inlet tmw Mean temperature, water, °C At Temperature difference between (tr - Apw Pressure drop water, kPa PwL Cooling effect on the water connection Cooling effect in W/m effective length, Pk0,05 for chilled beam QPBA (430 mm], QP(S,D]A (290mm] °C. The temperature difference between room air and water should in this case be increased by 1 - 2 °C. This is because in the...

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Passive chilled beams QPVA and QPBA Tecnical data - cooling, dimensioning example Air velocity below chilled beam The tabel shows the velocity below the chilled beam, at diffrent cooling capacities. The values are valid for a room without external influences, like heating sources or other air movements that affect the velocity below the chilled beam. Chilled beam QPBA QPVA Correction for water flow, on basis of the diagram ”Correction of cooling effect for water flow other than 0.05 l/s” is obtained K = Pk 0,083/Pk 0,05 = 1,05. The actual effect is therefore 5 % higher than the...

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Passive chilled beams QPVA and QPBA Product code, product code - accessories Product code Main code Beam attachments Passive chilled beam, standard Construction: beam underside (a) P = perforated For beam length (a) 2 = 430 mm (QPBA) 4 = 570 mm (QPVA) Surface finish (b) 1 = unpainted 2 = painted, standard white Length, cm (ccc) 120-420, with 10 cm interval Suspension brackets Construction (d) 1 = for individual installation 2 = for series connection with a beam for individual installation corresponding to code 1 above. Two pieces per beam. For beam width (a) 2 = 430 mm (QPBA) 4 = 570 mm...

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Passive chilled beams QPVA and QPBA 6Pages

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Passive chilled beams QPVA and QPBA
6Pages