Providing new 130 TR water cooled chiller in place of damaged 120TR in A C plant at Govt Medical college MG Kavu Thrissur-AC workElectrical AC Work.

Amount

CHILLER

OD185805/2022-2023:Supply, installation, testing & commissioning including unloading at site and shifting of material to the point of installation including lifting using mechanical means to the designated area installation, levelling of water cooled high efficiency 130TR screw chiller machine ,with 3 year warranty , specification of chiller as follows Cooling Capacity : 130 TR Min COP at AHRI : 5.75 Min IPLV Required : 7.50 Chilled water in / out : 12 / 7 Deg C Evaporator Fouling factor : 0.0001 FPS Condenser in / out : 31 / 36 Deg C Condenser Fouling factor : 0.00025 FPS Certification : AHRI Certified High Efficiency Water-cooled Screw chiller having Single / Multiple Screw Compressors with R134a refrigerant. Performance Data: The COP and IPLV at AHRI Condition should not be less than 5.75 and 7.50 respectively. Certification : Chiller shall be certified either from AHRI/Eurovent and the Manufacturer should have a performance test fecility at their manufacturing plant where the chiller is produced. Factory Acceptance Test: The vendor should perform 4 point factory acceptance test at Design condition. High efficiency Water Cooled Screw chillers Water Cooled Screw Chiller having Single / Multiple Semi hermetic twin screw compressors with R134a Refrigerant optimized to operate with low compression ratio and R134a refrigerant, shell and tubes condenser, Flooded evaporator, electronic expansion valve. The unit should be supplied fully refrigerant charged and factory tested. Structure Frame should be polyester-painted galvanized steel. The self-supporting frame should be built to guarantee maximum accessibility for servicing and maintenance operations. Refrigerant circuit Unit should be with independent refrigerant circuit for each compressor to assure continuous operation, minimum risk of gas leakages and easy maintenance. Standard components of the refrigerant circuits should be: - electronic expansion valve - high and low pressure safety valve - compressor´s discharge and suction shut-off valve - liquid line shut-off valve - drier filter with replaceable cartridge - refrigerant line sight glass with humidity indicator - high pressure transducer. Compressors The bearings provided along the rotor axis, in a separate chamber isolated from the compression chamber, are in high-strength carbon steel. Oil flow managed by pressure´s differences, without any dedicated oil pump, specifically designed so that the smallest differences between high pressure and suction pressure ensure sufficient oil supply to the bearings, both at full and partial load. The built-in oil separator has 3 stages of separation with a 10 mm stainless steel mesh filter ensuring the constant presence of oil inside, with an oil carry over rate lower than 0,5%. Compressors continuous modulation thanks to a slide valve which, depending on the position assumed, permits the compression´s chamber stepless reduction. Each compressor partializes down to 30% of its maximum capacity. In addition to standard no-load switch-on procedure, the motor is fitted with electric devices limiting the absorbed current during start-up. Evaporator Shell and Tube DX / Flooded type evaporator with water flowing inside and refrigerant flowing outside the pipes. Steel shell should be insulated with a foamed closed-cell elastomer 10 mm thickness and 0,033 W/mK at 0°C thermal conductivity. Internal copper tubes should be mechanically fitted onto the plates and grooved internally to enhance the heat exchange between refrigerant and water. A differential pressure switch should be present as standard to control the water flow while the unit is working preventing the ice formation. The heat exchanger should be manufactured in accordance with with ASME standards. Condenser Shell and Tube Flooded type condenser with water flowing inside and refrigerant flowing outside the pipes. The copper tubes should be internally and externally grooved to improve heat exchange. The heat exchanger should be manufactured in accordance with with ASME standards. Electrical and control panel Electrical and control panel should be CE certified and complete with: - electronic controller - control circuit transformer - general door lock isolator - power circuit with bar distribution system - fuses for compressors - compressors protection with internal thermal overload - terminals for cumulative alarm block - remote on/off terminals - BMS connectivity - spring-type control circuit terminal board - phases sequence and minimum/maximum voltage control.

OD185812/2022-2023:Disconnecting all the electrical connections from the existing panel board and dismantling the existing 120 TR chiller unit from the foundation without further damage, removing the same from the chiller plant and storing at convenient place by using crane and supporting tools etc and removing and storing all other accessories to section store.

16.2.8:Supplying, laying/ fixing, testing and commissioning of following nominal sizes of chilled water piping inside the building (with necessary clamps, vibration isolators and fittings but excluding valves, strainers, gauges etc.) duly insulated with following closed cell elastometric nitrile rubber of class 'O' insulation applied by adhesive confirming to standard specifications and finally applying 0.63mm aluminium sheet cladding complete with type 3, grade 1 roofing feltstrip (as per IS:1322 as amended up to date) at joints and repairing of damage to building etc. as per specifications and as required complete in all respect. Note:- The Pipes of sizes 150mm & below shall be M.S. 'C' class as per IS : 1239 and pipes size above 150mm shall be welded black steel pipe heavy class as per IS : 3589, from minimum 6.35mm thick M.S. Sheet for pipes upto 350mm dia. and from minimum 7mm thick MS sheet for pipes of 400 mm dia and above.Chilled water piping of nominal size - 100mm dia. (32mm thick nitrile rubber insulation

16.10.1.4:Condenser water pipes Supplying, 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. as per specification and as required complete in all respect. Note : The pipes size 150 mm & below shall be M.S. 'C' class as per IS: 1239 and pipes size above 150 mm shall be welded black steel pipe heavy class as per IS: 3589, from minimum 6.35 mm thick M.S. Sheet for pipes upto 350 mm dia. And from minimum 7 mm thick MS sheet for pipes of 400 mm dia and aboveCondenser water piping of nominal size - 150 mm dia

16.11.1.2:Supplying, fixing testing and commissioning of following valves, gauges and strainers for condenser water circulation as per specifications. Butterfly Valve ( Manual) with C I body SS disc nitrile sheet & O ring & PN 16 pressure rating as specifiedButterfly Valve ( Manual) of 150 mm dia

16.7.1.4:Supplying, fixing, testing and commissioning of following valves, strainers, gauges in the chilled water plumbing duly insulated to the same specifications as the connected piping and adequately supported as per specifications. Butterfly valve (Manual) with C I body SS Disc, Nitrile Rubber Seal & O-Ring PN 16 pressure rating for chilled water/ hot water circulation as specified .BUTTERFLY VALVE (MANUAL) 100 mm

16.8:Providing and fixing in position the industrial type pressure gauges with gun metal / brass valves complete as required

16.9:Providing & fixing in position the mercury in glass industrial type thermometers.

OD185832/2022-2023:supply of flow switch for chiller and socket

Bidder Name

PONNU HYLINE