Setting up of Solar water Heating system at Jawahar Navodaya Vidyalayas under Bihar and West Bengal Region

Sr. No. Description AMOUNT (RS.)

A Estimated Cost

1 Solar Water Heating System 500LPD Each 69401654.70

TOTAL ESTIMATED COST (RUPEES) 69401654.70

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NVS (PATNA REGION)

SOLAR WATER HEATING AND ELECTRIC WATER HEATER/GEYSER UNITS

Description Unit Qty. Rate Amount (Rs.)

1.0 NS SOLAR WATER HEATING SYSTEM OF CAPACITY: 500 LPD

Supply, Installation, Testing & Commissioning of 500 LPD Flat Plate based thermosyphone circulation Non-Pressurized Solar water heating

Systems comprising Flat Plate collectors , internal system piping, insulated hot water storage tank , Heat Exchanger, Electric Back up Heaters,

plumbing accessories, electrical items as required. Including DLP of complete system for 2 years and Guarantee/warranttee of Solar water Set 490 141636.03 69401654.70

heating unit for 5 years. Details of each items to be used in one 500 LPD system are mentioned below:

ITEMS FOR 1 SET

SITC of 500LPD Solar FPC Collector & Storage Tank with Stand - 4 nos. of Solar Flat Plate Collectors of minimum 2030x1030mm size for

minimum 2.0 Sq.Mtr. Absorber material shall be ETP grade Copper with copper Fins & Copper Tubes. The Flat Plate Collectors shall be as per

IS 12933. Along with 500LPD Solar Water Heating Tank made out of MS steel of 2.0 mm thickness and Manufacturer Standard Dish Thickness

with internal epoxy/PU coating OR SS 2mm thick and outer precoated Aluminium Cladding over 50mm PUF Insulation having density not less

than 32Kg/Cu.mtr. With In-Built Ladder type Heat Exchanger made of SS-304 & 5 Ltr SS (1mm thick) Expansion tank, maintenance free

sacrificial/Magnesium Anode, provided with Electrical Heater 2Nos. x 3KW electrodes with thermostat/ Auto Cut , Cold Water inlet, Hot Water

outlet, Collector - Inlet and Outlet piping with insulation. Collector & Tank Stands made out of MS angle iron size shall not be not less than

35mmx35mmx3mm, CC Foundation as per the direction of Engineer incharge. (BIS 12933).

PLUMBING ITEMS PER SET

Providing and fixing Chlorinated Polyvinyl Chloride (CPVC) pipes, having thermal stability for hot & cold water supply, including all CPVC

plain & brass threaded fittings, including fixing the pipe with clamps at 1.00 m spacing. This includes jointing of pipes & fittings with one step

CPVC solvent cement and testing of joints complete as per direction of Engineer in Charge. Internal work - Exposed on wall

20 mm nominal dia Pipes (Min.: 15Mtrs OR as per actual site requirement)

Nitrile foam insulation of 9 mm thick with 26 gauge aluminium cladding for 20mm dia Hot water Pipe (Min.: 8Mtrs OR as per actual Site

Providing and fixing ball valve (brass) of approved quality, High or low pressure, with plastic floats complete :

20 mm nominal bore (Min.: 2nos. OR as per actual site requirements)

Providing and fixing gun metal non- return valve of approved quality (screwed end) :

25 mm nominal bore -Horizental (Min.: 2nos. OR as per actual site requirements)

Y Strainer -Screwed- 20mm dia -Bronze (Min.: 1nos.OR as per actual site requirements)

Air Release Valave- 20mm (Min.: 1nos.OR as per actual site requirements)

Auto Air Vent -20mm (Min.: 1nos.OR as per actual site requirements)

Providing and fixing C.P. brass bib cock of approved quality conforming to IS:8931

15 mm nominal bore (Min.: 1nos.OR as per actual site requirements)

Dial Type Temprature Gauge 100mm dia (0-150deg) (Min.: 1nos.OR as per actual site requirements)

Control Panel / ACDB for Electrical Heater including required switchgear like DP MCB incommer & DP MCB outgoing of suitable ratings for

each 3KW Heater. Housed in Poly Carbonate (IP65) Enclosure, Complete with wiring up to heater in PVC Conduit.

Electrical Wiring for incoming to ACDB :

Wiring for circuit/ submain wiring alongwith earth wire with the following sizes of FRLS PVC insulated copper conductor, single core cable in

surface/ recessed medium class PVC conduit as required.

2 X 6 sq. mm + 1 X 6 sq. mm earth wire (Min.: 15mtrs OR as per actual site requirements)

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