laminar flow panels

Publication DIFFUSERS section 2 SEPT 2005 PART D R Air Diffusers supply and exhaust ventilation systems laminar flow panels type control finish LFP/SE / FDQ / WHITE (PC) / 600 x 600 / 4 size quantity EXAMPLE : introduction The Laminar Flow Panel has been developed for applications such as clean rooms, laboratories and operating theatres where it is generally necessary to introduce a stable, low velocity laminar air stream into the occupied zone without entraining room air. The plenum chamber of the unit contains perforated baffle plates to distribute air evenly, resulting in a near uniform jet velocity up to 2.5m from the panel face. The perforated face plate is fitted with spring clips and is easily removed to facilitate cleaning. The units are manufactured in two sizes to suit 600mm and 1200mm ceiling grids. Plenum chambers are manufactured in 22swg mild steel with white powder coated frame and face plate as standard (PC). A wide range of optional colours are however available in the BS and RAL ranges. See Part I for details. Plenums are supplied fitted with hanging brackets to take 8mm drop rod supports. ordering details When ordering, state the required size and spigot configuration, the damper type, and the finish. Orders should state whether the units are to fit a lay-in or concealed ‘T’ ceiling system. control sizes finish options type fixings LFP Quadrant (FDQ) or cord operated (FDC) flap dampers as standard. Plenums are available with either top or side entry Inlet configurations. Laminar Flow Panels DESIGN FEATURES 2 Plenum Dimension A + B 30 Hanging Brackets Flap Damper Removable Perforated Face Panel 28 75 Side Entry (SE) C 5 W x H o/a Dia D DIMENSIONS (mm) UNIT SIZE INLET W H A B C D 600 x 600 TE 600 600 508 508 250 200 600 x 600 SE 600 600 508 508 300 200 1200 x 600 TE 1200 600 1108 508 300 300 1200 x 600 SE 1200 600 1108 508 420 300 NOTE: Overall dimensions W and H are reduced to 595 and 1195 for lay-in ceiling systems. AIR FLOW RATE (l/s) 600 x 600 20 40 60 80 100 120 140 160 AVE. AIR VELOCITY (M/S) STATIC PRESSURE LOSS (P/A) TOP ENTRY SIDE ENTRY NR LEVEL 0.21 0.42 0.48 0.63 0.71 0.78 0.84 0.86 1 3 4 6 8 10 12 14 18 22 25 16 22 27 31 34 AIR FLOW RATE (l/s) 1200 x 600 75 100 125 150 175 200 225 250 AVE. AIR VELOCITY (M/S) STATIC PRESSURE LOSS (P/A) TOP ENTRY SIDE ENTRY NR LEVEL 0.36 0.44 0.53 0.61 0.68 0.73 0.78 0.83 1 2 3 3 4 5 7 8 14 17 20 12 16 19 Velocities are expressed as an average airstream velocity within a vertical distance of 2.5m from the panel face and relate to a temperature differential of -10oC. Average velocities for a differential of -5oC can be found by applying factors of 0.75 for the 600 x 600 unit. Noise data is expressed in terms of NR level with an assumed absorption of 4db for typical semi reverberant applications. Laminar Flow Panels PERFORMANCE DATA dimensions jet velocity noise levels R 3 part A Introduction, Technical Overview and Selection Guide. Diffuser programme literature R part B Continuous Slot and Linear Louvre Diffusers. part C Multicore Square and Rectangular Diffusers. part D Laminar Flow Panels. part E Circular Diffusers. part F Drum Jet Diffusers. part G Supply and Extract Valves. Tel: +44 (0)1268 572266 Fax: +44 (0)1268 560606 email: info@brookeair.co.uk web: www.brookeair.co.uk part H Plenum Boxes part I Finshes and Conversion factors JC House, Hurricane Way, Wickford Business Park, Wickford, Essex SS11 8YB, UK.

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