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Long-throw spherical diffusers – DF 48

Long-throw spherical diffusers – DF 48
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Long-throw spherical diffusers – DF 48 - 2

CONTENTS DF-48 spherical diffuser 2 Selection and correction charts 5

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Long-throw spherical diffusers – DF 48 - 3

DF-48 spherical diffuser Description The DF-48 long-throw, spherical diffuser in its standard version is manufactured entirely of anodised aluminium with a natural finish. By special order, the diffuser can be painted in any RAL colour. The diffuser has a volume control damper at the outlet. Application The DF-48 diffusers allow long throws with an acceptable noise level. The diffuser releases an occasional air jet with a throw of over 30 metres. They can be used for spot cooling and are especially appropriate for sport centres, industrial warehouses, clean rooms, recording studios,...

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Long-throw spherical diffusers – DF 48 - 4

Dimensions of plenum boxes for Dimensions of plates with diffuser connection to round duct assemblies

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Long-throw spherical diffusers – DF 48 - 5

Notes - This selection table is based on laboratory tests as per ISO 5219 (UNE 100.710) and ISO 5135 and 3741 standards. - At is equal to 0°C (isothermal air). - The behaviour of the air jet with different At is shown in the following charts. Symbols Q = Air flow VK = Effective velocity Ak = Effective area APt = Total pressure drop LwA = Sound power X0,3 - X0,5 - X1i0 = Throw for a terminal air velocity of 0.3, 0.5 and 1.0 m/s, respectively.

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DF-48 DF-48 model Selection charts DF-48-1.- Maximum vertical penetration.

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Long-throw spherical diffusers – DF 48 - 7

DF-48 model DF-48-2.- Velocity of the air jet for the throw.

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DF-48 model DF-48-3.1.- Vertical deviation of the air jet (non-isothermal jets).

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DF-48 model DF-48-3.2.- Vertical deviation of the air jet (non-isothermal jets).

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Long-throw spherical diffusers – DF 48 - 10

DF-48 model DF-48-3.3.- Vertical deviation of the air jet (non-isothermal jets).

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Long-throw spherical diffusers – DF 48 - 11

DF-48 model DF-48-3.4.- Vertical deviation of the air jet (non-isothermal jets).

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Long-throw spherical diffusers – DF 48 - 12

DF-48 model DF-48-3.4.- Vertical deviation of the air jet (non-isothermal jets).

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Long-throw spherical diffusers – DF 48 - 13

DF-48 model DF-48-3.5.- Vertical deviation of air jet (non-isothermal jets).

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DF-48 model DF-48-3.6.- Vertical deviation of the air jet (non-isothermal jets).

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DF-48 model DF-48-4.- Ratio between air flow velocities. DF-48-5.- Ratio between temperature differences.

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Long-throw spherical diffusers – DF 48 - 16

DF-48 DF-48 model DF-48-6.- Induction rate. DF-48-7.- Pressure drop and sound power level.

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Long-throw spherical diffusers – DF 48 - 17

DF-48 Symbols Common symbols used in all tables and charts in the catalogue. Distance between the equipment to the impact point of the jets (with another jet or wall) under isothermal conditions. Supply angle. Horizontal distance from the equipment to the impact point of the jets (with another jet or wall). Throw of the air jet. Deviation of the air jet caused by a temperature difference between the supply and ambient air. Installation height of the equipment. Height of occupied area. Height from the impact point of the jets (with another jet or wall) under isothermal conditions with...

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Long-throw spherical diffusers – DF 48 - 18

THIS CATALOGUE IS INTELLECTUAL PROPERTY. Reproduction, either partial or total, by any means, including electronic, is prohibited without prior written authorisation from KOOLAIR, S.A. CEN-DF-48-0815-00

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KOOLAIR, S.A. Calle Urano, 26 Poligono industrial nº 2 – La Fuensanta 28936 Móstoles - Madrid - (España) Tel: +34 91 645 00 33 Fax: +34 91 645 69 62 e-mail: info@koolair.com

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Long-throw spherical diffusers – DF 48 19Pages

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Long-throw spherical diffusers – DF 48
19Pages