Centeral Station Air Handling Unit

Transcription

1 Centeral Station Air Handling Unit CA Series

2 The product range includes double skinned Air Handling Units, double skinned Fan Coil Units, and custom designed packaged roof top Air Conditioning Units. BASIS OF SELECTION OF DOUBLE SKINNED AIR HANDLING UNITS - CA SERIES MODEL NOMINAL AIR VOLUME FAN DIA / OUTLET COIL FACE WIBD cfm m 3 / hr L / sec mm m 2 m ,165 2, / ,757 3, / ,647 4,5000 1, / ,822 6,500 1, / , , / ,185 10,5000 2, / ,645 13,000 3, / ,400 16,000 4, / ,750 20,000 5, / ,530 23,000 6, / ,455 28,000 7, / ,600 35,000 9, / ,530 40,000 11, / ,415 50,000 13, / , , / ,170 70,000 19, / ,050 80,000 22, / Detailed fan and coil selections available on request. Non standard - custom designed and built Air Handling Units is WINS`S specialty

3 Model CA Air Handling Units are designed to give effective treatment of the air and are manufactured incorporating corrosion resistant materials, such as anodised profiles and stainless steel fixings. 1) CASING: Double skinned panels are fixed to an anodized aluminum alloy framework with stainless steel screws, forming a rigid casing enclosing the various air treatment sections such as mixing, filtration, heating, cooling, humidification, supply fan, extract fan. If required, various other sections such as heat recovery, multizone, sound attenuators can be incorporated. Air tight sealing is ensured through a neoprene gasket between the panel and the frame. Depending on the application and the operating environment, there are several options while selecting the composition of the double skinned panels. TYPE CA : Panels are of double skinned construction with insulation between two solid metal sheets. PANEL THICKNESS: 25mm or 50mm. PANEL MATERIALS: INNER SHEET (SOLID) Galvanized steel (plain/prepainted/preplasticised) Peraluman (Al. Alloy) Stainless Steel Sheet Galvanized Steel OUTER SHEET (SOLID) Galvanized steel (plain/prepainted/preplasticised) Peraluman (Al. Alloy) Stainless Steel Sheet Galvanized Steel PANEL INSULATION: MATERIAL DENSITY THERMAL CONDUCTIVITY kg/m 3 watt/m C Pressure injected foam Mineral Wool ACCOUSTIC PROPERTIES OF CA PANELS OF 25 MM THICKNESS: FREQUENCY K 2K 4K Sound Transmission Loss db (STC: 31) Sound Absorption Coefficient (NRC:0) ACCOUSTIC PROPERTIES OF CA PANELS OF 50 MM THICKNESS: FREQUENCY K 2K 4K Sound Transmission Loss db (STC: 35) Sound Absorption Coefficient (NRC:0) OPTIONAL: Casing type CA constructed with special sealing to meet high pressure Class C leakage rate when tested in accordance with DW/

4 Type CAP: Panels are of double skinned construction with insulation between two 1.0 mm thick metal sheets. The inner sheet is perforated while the outer sheet is solid. PANEL THICKNESS: 25mm or 50mm. ACCOUSTIC PROPERTIES OF CAP PANELS OF 25 MM THICKNESS: FREQUENCY K 2K 4K Sound Transmission Loss db (STC: 27) Sound Absorption Coefficient (NRC: 0.65) ACCOUSTIC PROPERTIES OF CAP PANELS OF 50 MM THICKNESS: FREQUENCY K 2K 4K Sound Transmission Loss db (STC: 29) Sound Absorption Coefficient (NRC: 0.95) PANEL MATERIALS: INNER SHEET (PERFORATED) Galvanized steel (plain) Peraluman (Al. Alloy) Galvanized Steel OUTER SHEET (SOLID) Galvanized steel (prepainted/preplasticised) Peraluman (Al. Alloy) Galvanized Steel PANEL INSULATION: MATERIAL DENSITY THERMAL CONDUCTIVITY kg/m 3 watt/m C Mineral Wool RECOMMENDATION: In view of their sound absorption characteristics, type CAP panels are recommended for fan sections or where attenuation is required to minimize the noise transmission into the ductwork

5 2) CONSTRUCTION: a) ACCESS DOORS: For inspection or maintenance of the components in various sections such as filters, fans, motors, coils, etc., double skinned access doors are provided either fully removable or with hinges made of die cast aluminum. b) RETURN/INLET PLENUM: Return/inlet plenums with same construction as unit casing can be supplied with or without opposed blade, volume control damper. c) BASE FRAMES: Units are supplied with a heavy gauge galvanized base frame. This base frame extends under the complete unit if unit is supplied in one section or under each section if unit is supplied in split sections. Optional: Intake Louver d) FILTER SECTION: Filter Banks are designed for easy withdrawal and replacement of filters. Fully sealed filter frames are designed to accommodate various types of filters such as: e) MIXING BOX & DAMPERS: Mixing Boxes are of same construction as the unit casing and are available with two or three dampers arrangement with configuration to suit the plant room ductwork. Dampers are sized for 6.0 m/ sec velocity. Dampers are of opposed airfoil blade type. Airfoil blades are made of aluminum alloy extrusions and are assembled in aluminum alloy framework. Optional - Panel filters - Automatic filters - Bag filters - Absolute filters Filters of specified manufacturer Filter manometers Filter pressure switches - Activated carbon filters - Intertial sand filters - Oil bath filters - Electrostatic filters f) COIL SECTION: Cooling/heating coils are computer selected to obtain specified heat exchange capacities. Cooling coils are of chilled water or direct expansion type, while heating coils are of hot water or steam type. Coils are made of copper tubes, mechanically bonded to aluminum fins, assembled in heavy gauge galvanized frame work. Water and steam coils are complete with galvanized steel headers while DX coils are with copper headers and brass refrigerant distributor. All coils are leak tested under water at 30 bar. Coils are mounted within the coil section to facilitate easy withdrawal. Drain pan made of stainless steel sheets is provided under the cooling coil section with threaded drain outlet. Optional Copper headers for water coils Vinyl coated aluminum fins Copper fins HERESITE coate coils Electro-tinning of Cu/Cu coil after manufacture. Stainless steel coil frame Run aruond coils - 5 -

6 g) MOISTURE ELIMINATOR: If necessary, moisture eliminators can be fitted after the cooling coil / humidifier section to avoid carry over of moisture. Eliminator blades are made of polypropylene and are assembled within a heavy guage galvanized steel frame. Optional: Eliminator blades made of galvanized sleel / prepainted steel / stainless steel, with frames made of galvanized steel sheets. h) HUMIDIFYING SECTION: Following types of humidifiers are available; Airwasher complete with recirculating pump, water distribution pipework, spray nozzles, inlet strainer, drain pan with overflow and moisture eliminator. Wet deck complete with recirculating pump. Spray coils. Pan and electric resistance. Self generated steam package. Alternatively, blank sections can be supplied to incorporate steam distributor / injector with steam from an external source. i) FAN SECTION: DIDW centrifugal fans with forward curved or backward curved imellers are available with various outlet configurations. Fans and casings are made of corrosion resistant materials or given corrosion resistant finish. All fan wheels and pulleys are statically and dynamically balanced and keyed to the shaft. Fan shafts are made of high quality solid steel and are supported on pregreased sealed for life ball bearings. Fans are driven by TEFC motor located within the unit casing. Fan and motor are mounted on a common base frame with facility to allow easy belt tensioning. Fan & motor assembly is isolated from the unit casing by antivibration mounts and a flame retardant flexible connector on the fan discharge. Optional: Fan casing and impellers hot dip galvanized after manufacture. Inlet guide vanes. Axial fans with variable van control. Fans with anti spark features. Fan casing with drain plugs and inspection doors. Belt guards. Two speed, variable speed or any other special motor. j) HEATER BATTERIES: Electric heater batteries are supplied with sheathed electric resistance heating elements made of finned steel tubes assembled within a galvanized steel frame. Entire assembly is located within the casing of the heating section. EHaters can be supplied with various capacities / stages as required. Optional: Heating elements made of stainless steel / copper tubes. Overheat thermostat or other controls. Terminal block with internal prewiring. 3) OTHER APPLICATIONS: Units can be supplied incorporating the following sections; Face and Bypass. Multizone. Dual duct. Heat recovery. Non standard units can be designed to meet client's constraints and to operate at severe climatic environments. 4) ACCESSORIES: On request, units can be supplied with the following accessories; Weatherproof roof canopy. Inspection window. Bulkhead lights

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11 Nomenclature Type W : Wall Split T : Cassette Split F : Floor Standing U : Universal Split D : Ducted Split H : Horiz. Cond. Unit V : Vert. Cond. Unit P : Roof Top Package L : Chilled Water FUC C : Air Handling Unit AHU K : Window Unit Series Nominal Capacity MB TU/Hx1000 BTU/H Cooling Only - C C A 018 C 1 A R E E: elect. heat optional N: no elect heat R: R-22 N: R-407 C D: R-410 A A: T1 Stand. Ambient B: T3 Hi Ambient Heat pump - H Electncal code : v/ 1ph/50hz v/ 1ph/60hz v/ 1ph/60hz v/ 3ph/50hz v/ 3ph/60hz 6 460v/ 3ph/60hz

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