Replacement of 1 x 150 TR Water Cooled Chiller AC of Bharti Bldg., IIT Delhi

Amount

Supply, installation, testing and commissioning of floor-mounted AHRI (Air-Conditioning, Heating, and Refrigeration Institute) Certified water cooled screw-type chiller machine complete with VFD (Variable Frequency Drive), single/multi semi-hermetic twin screw type compressor, water-cooled Shell & Tube type condenser, Shell & Tube horizontal flooded type evaporator with carbon steel shell and seamless copper tubes with 19 mm nitrile rubber insulation i/c suitable foundation/mounting structure made of RCC/MS Structure i/c anticorrosive paint, anti-vibration pad, power control cable and connection interconnection etc. as per design approved by Engineer-in-charge, interconnected copper refrigerant piping and wiring, vibration isolators, gauge panel, automatic safety controls, flow switch at evaporator and condenser and ozone friendly Chlorofluorocarbons (CFC)-free refrigerant gas R-134A. The refrigerant flow control shall use an electronic expansion valve. The chiller shall be designed for a Water Side working pressure of 150 PSI and hydraulically tested at 1.3 times of design pressure. A number of properly spaced baffles shall be provided for maintaining optimum water velocity and heat transfer and the tubes shall be adequately supported. The chiller shall be Building Management System (BMS) compatible. The system shall be in confirmation to IS: 16590 and CPWD Specification as amended upto date. Chilled water Leaving Temp. (6.67 deg. C) Chilled water Entering Temp. (12.2 deg. C) Evaporator fouling factor = 0.018 m2 ⁰C/kW Condenser water Entering Temp. (32.2 deg. C) Condenser water Leaving Temp. (36.4 deg. C) Suitable for Seismic Zone and Altitude as per location/site.

150 TR BEE 3 Star Rated

Dismantling and removal of existing 1 x 150 TR Chiller from its position disconnecting all in-out pipes, power connections, etc. including moving the unit outside the AC Plant room to facilitate installation of new chiller in its place, etc. complete as directed by the Engineer-in-charge.

Supplying, laying, fixing, testing and commissioning of following nominal sizes of chilled water piping inside the building (with necessary clamps, vibration isolators and fittings such as bends, tees, etc. but excluding valves, strainers, gauges, etc.) duly insulated with following closed cell elastomeric nitrile rubber of minimum 45 kg / cum density, thermal conductivity 0.037 W/MK or better at 20 deg C mean temperature class 'O' insulation applied by suitable adhesive complete including repairing of damage to building etc. as per specifications and as required complete in all respect. N.B.: - The pipes of sizes upto 150 mm dia shall be M.S. "C" class as per IS:1239 and pipes above 150 mm dia shall be welded black steel heavy class as per IS: 3589 from minimum 6.35 mm thick M.S. sheet upto 350 mm dia and from minimum 7 mm thick M.S. sheet for pipes of 400 mm dia and above.

200 mm dia (32 mm thick insulation)

150 mm dia (32 mm thick insulation)

Supplying, fixing, testing and commissioning of following valves, strainers, gauges in the chilled water / condenser water plumbing duly insulated to the same specifications as the connected piping and adequately supported as per specifications including providing and making flanges, gaskets, SS nuts, SS bolts wherever required.

Butterfly valve (manual) with CI body, SS disc, nitrile rubber seal & O-ring PN 16 pressure rating for chilled water circulation as specified. 200 mm dia

Balancing Valve with built in measuring facility with CI body flanged construction with EPDM coated disc with long pitch with protected out pipe insulation & PN 16 pressure rating for chilled water circulation as specified. 200 mm dia

Y-Strainer of ductile CI body flanged ends with stainless steel strainer for chilled water circulation including insulation as specified. 200 mm dia

Providing and fixing in position the industrial type liquid filled pressure gauges with gun metal / brass valves with SS nipple / U pipe complete as required.

Providing and fixing in position the mercury in glass industrial type thermometer complete as required.

Supplying, laying, fixing, testing and commissioning of condenser water pipes of following sizes of MS 'C' class along with necessary clamps, vibration isolators and fittings such as bends, tees, etc but excluding valves, strainers, gauges, etc. adequately supported on rigid supports duly painted / buried in ground excavation and refilling etc. including repairing of damage to building etc. as per specifications and as required complete in all respect. N.B.: - The pipes of sizes upto 150 mm dia shall be M.S. "C" class as per IS:1239 and pipes above 150 mm dia shall be welded black steel heavy class as per IS: 3589 from minimum 6.35 mm thick M.S. sheet upto 350 mm dia and from minimum 7 mm thick M.S. sheet for pipes of 400 mm dia and above.

200 mm dia

150 mm dia

Supplying, fixing, testing and commissioning of following valves, strainers and gauges in condenser water plumbing and adequately supported as per specifications including providing and making flanges, gaskets, SS nuts, SS bolts wherever required.

Butterfly valve (manual) with CI body, SS disc, nitrile rubber seal & O-ring PN 16 pressure rating for chilled water circulation as specified. 200 mm dia

SUB HEAD - 2 (CAMC) [Supplementary Agreement shall be formed for CAMC] Comprehensive maintenance [routine & preventive] of the high side of the screw chiller unit comprising of all the machinery, equipment installed during the defect liability period of one year as per maintenance schedule under Special Terms and Conditions - CAMC during this period is completely free of cost. - 01 Job

Comprehensive maintenance [routine & preventive] including breakdown maintenance of the high side of the screw chiller unit comprising of all the machinery, equipment installed as per maintenance schedule attached at Annexure - H during five years subsequent to one year guarantee period as required.

1st year

2nd year

3rd year

4th year

5th year

(-) Less buy-back of the old outlived 150 TR Chiller with all dismantled accessories (as is where is basis) [Reserve price is Rs.1,00,000.00; bidder can't quote below Rs.1,00,000.00 for this item]

snowmex engineers ltd (BID ID -3243160)

Blue Star Limited (BID ID -3242160)

VOLTAS LIMITED (BID ID -3243751)