Design, Fabrication, Supply, Installation, Testing and Commissioning of evaporative based Air-Cooling system for High Bay hall of DMTD building at RRCAT, Indore

Amount

Double skin Air Handling Units Design, fabrication, supply, installation, testing & commissioning of Double Skin floor mounted Air Handling Unit (AHU) with thermal barrier profile & volume control dampers , constructed from outer skin with 22 G thick precoated G.I. sheet & inner skin plain 22 G thick G.I. sheet with 43mm thick injected PUF insulation with Aluminium extruded frame work of 2.0 mm thick hollow profile and comprising of following sections: A The AHU shall be provided with washable synthetic mesh filter . The filter effeciency shaould be 90% down to 10-microns. B High Quality Honey Comb Cooling pads made of cellulose paper of 200 mm thickness & 5 mm flute height covering three sides should be provided with AHU along with water sprinkler ,pump set, drain, over flow arrangments. The face velocity at the AHU pads shall not exceed 500 FPM. The water sump shall be of 18G SS 304 Grade Tank with welded inner joints. The tank shall be complete with make up, over flow & drain connections.All the piping shall be "C' PVC pipe complete with fittings including gatevalves, check valves, NRVs, strainer etc for each circuit connecting to over head tank. C AMCA certified belt driven fan / plug fan with speed controler DIDW backward curved centrifugal blower preferably low rpm (~ 1000 rpm). D Squirrel cage induction motor of TEFC type suitable for 3 -phase, 400V, 50Hz, winding of motor shall be class 'F' insulated and fully tropicalised, motor shall be rated for continuous duty as defined in IS: 325 for blower with adjustable base frame, fitted on a common extruded Aluminium channel using anti vibration mountings for silent and vibration free operation. Capacity 7.5 Kw (10 H.p ). E Taper lock type pulleys for fan and motor with suitable V-belt and belt guard. F Flanged connection at the outlet of AHU with volume control damper for integrating to the main duct line. G fire retardant flexible connections. (Canvas connections). H Suitable inspection doors for filter & blower sections. I Suitably rated antivibration (Cushyfoot) mountings for AHU installation.

AHU / 15,000 CFM / 60 mm S.P.

Ductable Air-conditioner 11 TR capacity

Supply installation testing & commissioning of 11 TR ductable air-conditioner having eco-friendly refrigerant R410A/R407 or equivalent, working on scroll compressor including power & control cabling from panel to motor/blower & outdoor unit. Air cooled condenser coil with suitable size fan and motor along with angle frame & vibration isolation pads for mounting the unit. Machine shall include remote control panel with regulated ON/OFF buttons based on timming controls shedule & password lock function, thermostat sensor, thermostatic expansion valve, digital temperature controller, high & low limit pressure switches. The machine shall be fitted with 3PH controlling panel having terminal blocks, contactor’s, MCB, thermal over load relay, single phase preventer, push buttons, indicating lamps, ammeter with interlocking system. Punching of wall, putty & final paint of wall will be in the scope of contractor. Copper refrigerant pipings duly insulated with preformed aluminium foil preclad nitrile rubber sleeves insulation of 19 mm thick (the average distance between condensing units and indoor shall be approximately 10 meters) . Out of these three machines two machine will be working & one will be stand by, controled by swap controler based on timing controls. This swap controler shall be capable of running all the three machines at a same time as & when required. Three phase electric power will be provided at one point inside the hall its further distribution up to machine will be in present scope of work. Average distacnce between swap controler & AC unit will be approx 20 Mtr .

Overhead water storage tank 1500 ltr capacity

Three layer overhead tank with UV protection, anti-bacterial layer & food grade plastic along with necessory fittings like tank nipple, MTA Brass, FTA Brass, bush,union, ball valve, end cape etc required for proper functioning of the system.

HVAC Elctrical Panel

Supply, installation, testing & commissioning of electrical controls for AHUs :

High limit humidistate for operating circulating pump (ON/OFF).

Temperature & humidity indicator with sensor.

Power & Control Cablings

Design, Supply, installation, testing & commissioning of heavy duty medium voltage Power cables, Control cables & Double Copper earthings form Electrical panel to AHU & from AHU to electrical equipments ( length to be assessed for a compact run to connect all the components viz: AHU )and all other components & accessories required for proper operation & to maintain it at rquired conditions of system. The electrical panels can be installed at suitable place inside the HIGH BAY hall ) as per schedule, technical specifications & site conditions. The cable shall be 1100 volt grade, confirming IS : 1554 ( Ammended upto date), PVC insulated and FRLS PVC sheathed armoured with stranded copper conductor power & control cables, unless otherwise specified. Electrical Power will be provided at one point near the electrical panel, its further destribution from panel to other components like moter/pump/fans etc will be in the present work. Approx distance from AHU to cubical pannel will be 10 Mtr. The cable shall be laid on the perforated GI cable tray with required support in the manner as specified. The work shall include : i)Supply & installation of cable clamps, cable markers, perforated G.I. cable tray with required supports etc. ii)Supply, Routing, Laying and Termination of earthing wires, earthing the glands and armouring etc. with earthing clamp and jumper and also connecting to common earth bar. iii)Supply, Routing, Laying & Termination of all cables with double compression brass cable glands & crimping type tinned copper lugs / sockets / with necessary tools & equipmennts and all other necessary materials required for this work as specified in specification and relivant Indian Standards . iv)Making ziri on wall or IPS flooring and finishing the surface to makes it as original. v)Supply and fixing of cable brackets, supports, clamp etc. in trench or on shaft.

"C' PVP Water Piping

Supply, installation, testing & commissioning of 1.25 Inch ''C" PVC pipe for water supply from the over haed tank to the AHU & drain water piping with 'U' trap complete with necessory fitings like T-joints, elbows, reducer, coupler, bends, flow control valve etc for the AHU from the overhead tank & to nearest floor drain. All the joins shall be fixed with good quality adhesive of make same as of pipe. The opening & closing of brick wall / ACP sheets for pipes will be in the scope of present work.

1 inch CPV line from main line to inlet of AHU along with T reducer.

G.I. Ducting Works : Design, fabrication, supply, installation, testing & commissioning of Prefab. G.I. sheet metal work : Supply, Fabrication , installation, & testing of prefab G.S.S. metal ducts including duct fitting like elbows/Bands, flanges gaskets, nuts, bolts duct supports brackets, M.S tie rods, clamping, anchoring , leak proof joints etc in accordance with approved shop drawing & as per technical specifications.

G. I. Duct Dampers ( Volume control dampers S.A/R.A)

Rectangular duct damper of opposed blade type duly silver painted.

Spot Jet diffusers with Volume control damper

Supply, fixing, testing, & commissioning of round type Spot Jet Diffusers (Dia 200 mm) in supply air duct system for evaprating cooling duct system with Aluminum volume control dampers including of suitable metal frame for fixing of round diffusers in the SA duct.

Exhaust Fans

Supply, fixing, testing, & commissioning of 600 mm sweep 700 Revolution per minute exhaust fans having vibration free balanced impellers,pre-lubricated double ball bearing for maintenance & trouble free running. Sound level of exhaust fans shall not exceed 55-60 Db

Fire Dampers Design, Fabrication, Supply, Installation, Testing & Commissioning of Fire Dampers with moter mechanism along with fire damper control panel & sensors.

Supply Air

Class 'O' Duct Thermal Insulation & Duct Accoustic Insulation

Supply, installation, testing & commissioning of 12 MM Duct thermal insulation with Aluminium foil preclad Nitril Rubber.

Fabrication Work

Supply, fabrication & fixing of M.S. structural work including angle/channel frames/supports etc. and finally painted with two coats of Red Oxide and two coats of enamel paint of required colour.

ADVANCED HVAC SERVICES PVT LTD

TRAC FUJICO AIR SYSTEMS LLP