Solar Water Heating System 1

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WORKSHOP-CUM-EXHIBITION ON PROMOTING DEPLOYMENT OF SOLAR WATER HEATING SYSTEMS AT GURGAON By Mukesh Gupta Chief Engineer November 20, 2009

Index : 

Index Introduction Design Criteria System Design Cost of the Project Cost-wise Comparison Electric Water Heaters vs. Solar Water Heating System Conclusion

Introduction : 

Introduction Housing Board Haryana is installing Solar Water Heating System for 256 Nos. Deluxe Flats Consisting of G+8 Storied in Housing Complex in Sec. 43, Gurgaon. This presentation gives a brief summary of design aspects and cost viability of the above mentioned project.

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4 NINE STOREYED HOUSING COMPLEX, SECTOR 43, GURGAON COVERED AREA:2284 SQ.FEET SALE PRICE : Rs.29 LACS PER FLAT

G.H.S. at Sector 43, Gurgaon : 

G.H.S. at Sector 43, Gurgaon

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G.H.S. at Sector 43, Gurgaon

Design Criteria : 

Design Criteria Ambient temperature ranging from 5 deg. C to 45 deg. C. Hot water consumption 125 liters per day per Flat. Total hot water consumption per day per tower comprising of 4 Flats per floor and 8 nos. Floors per tower is 4000 Liters. Total nos. of towers – 08 Nos. and totals nos. of flat – 256 Nos.

Design Criteria : 

Design Criteria Installation of the Solar Panels on the terrace of each tower, facing South – West direction.Only three flats have required sunshine. Approx. available terrace area 135 sqm. on each tower. Height of each floor of the building – 3.2 m.

Design Criteria : 

Design Criteria Desired hot water temperature in hot water storage tank : 60 ± 5 deg.C. Height of cold water storage tank from terrace level is 3 meter. Hot water piping is insulated G.I. pipe to minimize effect of temperature variations. Since common Solar Water Heating System is being provided for a single tower consisting of 32 flats, therefore, Electrical back up has not been provided and pre-heated water is supplied to individual geysers.

SYSTEM DESIGN : 

SYSTEM DESIGN It is proposed to install 4 nos. x 1000 LPD Solar Water Heating System with heat exchange on the terrace of each tower. The system shall have common distribution pipe for all the 8 floors. Ten nos. collectors of size 1860 x 1240 x 100 mm. ± 10 mm. for a system of 1000 liters / day is being installed, thus, total 40 nos. collectors are fixed on a single tower. Total 32 nos. of Solar Water Heaters each of capacity 1000 LPD are provided for 256 nos. flats in 8 nos. tower.

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G.H.S. at Sector 43, Gurgaon

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G.H.S. at Sector 43, Gurgaon

COST OF THE PROJECT : 

COST OF THE PROJECT Total cost of the project is appox. 71.00 lacs.

COSTWISE COMPARISION : 

COSTWISE COMPARISION Running and Maintenance Cost Annual running and maintenance cost - Negligible Appox. 1300 units of electricity / day will be consumed for heating the 32000 liters of water. Expenditure /day is Rs. 5850/- if rate / unit is assumed Rs. 4.50. SWHS Electrical Geysers This sums up to a Total Savings of Rs. 21.35 lacs per annum

Conclusion : 

Conclusion Entire principal cost for installation of Solar Water Heating System is likely to be recovered in a period of 3 years & 4 months only. This project will help in saving approximately 4.745 lacs of electric units per year and residents will be able to save upto Rs. 21.35 lacs per annum till the expiry of life span of SWHS (approximately – 15 years). Projects like SWHS will go a long way to help reduce Electricity supply and demand gap in our power starved country.

Thank You…for your patient hearing : 

Thank You…for your patient hearing