Renovation of Evaporative Type Air Cooling System for Central Work Shop at CSIR CEERI Pilani

Head-I

Centrifugal fan:- Supply, Installation, Testing and Commissioning of Centrifugal Fan with double width double inlet construction, backward curved design, Vertical Air discharge, statically and dynamically balanced low noise level with self align oil grease packed, pillow block type roller/ball bearing on both sides, fan outlet velocity shall not exceed 650 RPM. Suitable capacity squirrel cage induction motor V belt drive, belt guard, common base frame and vibration isolation pads etc. as required. Blower housing's side plates and scroll shall be of heavy gauge (not less than 3 mm thick) sheet steel in welded construction. It shall be rigidly reinforced and supported by structural angles. Complete unit shall be de-rusted, cleaned, primed and finish with anti corrosive Epoxy coatings. Rotation arrow shall be clearly marked on the housing. (Firm has to submit the technical leaflet of fan characteristics curve). System comprising of the following and complete as per specifications and as required.

1 No.- Blower Capacity - 31000 CFM

1 No.- 15 HP, 4 pole TEFC squirrel cage induction motor with class "B" insulation suitable for operation on 3- Phase 415 ± 10% volts, 50Hz, AC supply, Connect the blower motor with existing cable and electrical panel board

1 No.- Suitable common mounting base Frame with anti vibration pads, Made of M. S.Channel ISMC-100, size 100x50 mm for blower and blower motor. Unit shall be de-rusted, cleaned, primed and finished with anti corrosive paint coatings

Lot- V-Belts and Belt Guard

PUMP SET :- Supply, Installation, Testing and Commissioning of Monoset Submersible Pump Set, 1HP, Single Phase , 50 Hz, AC with compatible starter, water strainer and suitable clamps for water spraying pipe.

1 No.-Mono set Submersible Pump Set

HUMIDIFICATION SECTION:- Supply, Installation, Testing and Commissioning of Humidification section within the existing masonry work - water Tank and opening within the space as height 2550mm and width 2580mm, comprising of following and complete as per specifications as required.

1 Lot- Providing and fixing MS (angle iron) frame ISA Size (50x 50x4) mm x 2350mm for holding the cellulose pad within the Humidification section.

1 Lot- Suitable size frame of SS sheet, thickness not less than 2mm, required to hold 200 mm deep x 2550 mm height x 2580 mm wide cellulose paper fills, rigidly reinforced and supported by dully painted 3 mm thick and 40mm wide, MS strips, including SS sheet water trickling tray as per requirement .

1 Lot-Supply, fixing and Testing of Cellulose paper pads / fills, cross corrugated, coated with anti rot, rigidity and wetting resin.

1 Lot-Providing and fixing MS angle iron bottom frame ISA Size (50x 50x4) mm x 2350mm for holding PVC eliminators within the Humidification section.

1 Lot-Suitable size frame of SS sheet for side support, thickness not less than 2mm, required to hold 100 mm deep x 2550 mm height x 2580 mm wide PVC eliminators, rigidly reinforced and supported by dully painted 3 mm thick and 40mm wide MS strips.

1 Lot-Supply and fixing of PVC eliminators after the humidification section (according the opening size between in the walls) to arrest the water droplets in the supply air as required

WATER PIPINGS: Supply, Installation, Testing and Commissioning of following nominal size, ISI mark Class "B" GI pipe for delivery and spray Including fittings such as flange, bend/elbow, union, socket, Brass gate valve, etc. adequately support as per specifications inside the building as required.

GI Pipe 32mm

GI Elbow 32mm

GI Socket 32mm

GI Union 32mm

GI Flange 32mm(Compatible for pump set)

Brass gate valve 32mm

Supply, Installation, Testing and Commissioning of GSS (conforming to IS:277) ducting of 1mm thickness including necessary supports, complete as per specifications and connecting with existing ducting.

Providing and fixing rectangular flexible connection minimum 250 mm height of double layer fire retardant heavy duty canvas cloth between Air Blower outlet and ducting including providing & fixing of flanges, Nuts, bolts, washers etc. as required to eliminate the vibrations from blower to ducting work as per standard engineering practice.

HEAD-II (Buy Back)

Salvage value of dismantled existing old Evaporative Type Air Cooling Plant with 6½ LLD air blower, 15 hp blower motor, 1hp water pump set, and rusted GI ducting only dismantled pieces etc. except power cable and electric panel board. (The contractor shall take the old material and pay back the amount to CEERI which is covered under head - II) (a). Dismantled air cooling system-31000CFM

CAPITAL ENGINEERS