A case study on CSIR Staff Quarters Complex at Kolkata

1. Adoption of Energy Efficient Process technologies & practices and implementation of Energy Conservation Act 2001 in Buildings A case study on CSIR Staff Quarters Complex at Kolkata Avijit Ghosh Sr.Superintending Engineer Central Glass & Ceramic Research Institute Kolkata - 32

2. Adoption of Energy Efficient Process technologies & practices and implementation of Energy Conservation Act 2001 in Buildings • Buildings, as they are conceived and utilized in present day, reflect uncontrolled consumption of energy. • In India, the commercial and residential sectors consume around 30% of the total electricity usage of the country. • Designing and developing new buildings based on sound concepts of sustainability and applying suitable retrofit options to existing buildings can substantially improve the energy use efficiency in the building sector with an associated reduction in both local as well as global emissions • Green Building movement is such a step towards recognizing the need to save the environment.

3. Adoption of Energy Efficient Process technologies & practices and implementation of Energy Conservation Act 2001 in Buildings • Case study location : The Residential Complex admeasuring 9 bighas (approx.) contains 3 Nos. G+10 Storied buildings & 1 No. G+3 Storied building, which are utilized as Senior Officer’s Quarters & Central Guest House respectively. There are altogether 96 flats of varying size in 3 bldgs. and 25 rooms (A.C.) in Guest house. Total Built-up area is 19200 Sq.Mtrs. Annual average energy consumption = 306207 Kwh • The Complex is fed with 6KV CESC Supply through 250 KVA Transformer. • Contract Demand is 120 KW & Average Max.Demand is 100 KW. • There is a provision of 100 KVA DG Set supply in case of load-shedding. Monthly Oil consumption is 180 Ltrs. • Annual Specific Energy Consumption Rate is 1.48 Kwh/Sq.ft.

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5. Adoption of Energy Efficient Process technologies & practices and implementation of Energy Conservation Act 2001 in Buildings

6. Adoption of Energy Efficient Process technologies & practices and implementation of Energy Conservation Act 2001 in Buildings

7. Adoption of Energy Efficient Process technologies & practices and implementation of Energy Conservation Act 2001 in Buildings • Energy Saving Initiative in LIFTS : • There were 06 Nos. relay logic based passenger lifts at the Complex, which were 40 years old. • Due to ageing and huge power consumption, it was decided to replace the same with modern one. • Replaced by microprocessor based V3F with Encoder for Closed Loop system and door drive system also with V3F feature. • In addition to riding comfort & better aesthetics, power consumption reduced by 25%. • With the encouraging result, we have installed another new lift at CSIR Guest House with all the above features.

8. Adoption of Energy Efficient Process technologies & practices and implementation of Energy Conservation Act 2001 in Buildings Energy Saving Initiative in Power Distribution: • During 2003, the Capacitor Bank was installed of capacity 87.5 KVAr. • Prior to the installation, the pf maintained was in the range of 0.70-0.76, with imposition of surcharge. • The pf improved in the range of 0.96 – 0.99. • Monthly rebate in the tune of Rs.4000/- is being enjoyed, in addition to exclusion of pf surcharge. • There is no MD Charges imposed by the Utility provider.

9. Adoption of Energy Efficient Process technologies & practices and implementation of Energy Conservation Act 2001 in Buildings • Energy Saving Initiative in Lighting system : • All 4 feet FTLs of 40W Capacity (2400 lumen) with Al. / Cu choke replaced by 36W higher lumen output (3250 lumen) along with low loss open type ballast (5W loss) in phased manner. Zone of illumination increased. • Depending upon functionality, conventional FTLs are replaced by 2X11W CFLs with mirror optic luminaire. • Mercury vapour lamps (80W) are replaced by LPSVs (35W) 1:1 basis, by HPSVs (70W) 1:1 basis and by other combinations, depending upon functional requirements. • Lift interiors are illuminated by LEDs (being done). • LED application is being done for Guest House table lamps, replacing CFLs of 9W.

10. Adoption of Energy Efficient Process technologies & practices and implementation of Energy Conservation Act 2001 in Buildings • Energy Saving Initiative in Heat reduction : • The top floor of the CSIR Guest House has been surveyed and found that the roof temperature exceeds 100 degree Celsius , and the RACs of 1.5TR capacity in each room are working overtime. • We are going to introduce XPS insulation of 25 mm thickness overdeck to reduce the incident solar radiation penetration. The thermostat of RACs shall be set to 25-26 degree range, and power consump-tion is expected to be saved in the tune of around 30%.

11. Adoption of Energy Efficient Process technologies & practices and implementation of Energy Conservation Act 2001 in Buildings • Energy Saving Initiative in Hot Water : • Hot water arrangement for CSIR Guest House kitchen was through one 25 ltr. Capacity Bajaj make storage geyser. • The same is going to be replaced by one 200 Ltr. Capacity Flat plate Collector type SWH.

12. Adoption of Energy Efficient Process technologies & practices and implementation of Energy Conservation Act 2001 in Buildings • Energy Saving Initiative in Plumbing works: • Concealed plumbing lines for newly constructed rooms were done by Supreme PPR pipes for low thermal conductivity, zero rust & expansion. • VIP rooms plumbing lines have been done by Ashirvad flowguard cpvc piping systems, suitable for use up to 90 degree celsius, even lower thermal conductivity than PPRs.

13. Adoption of Energy Efficient Process technologies & practices and implementation of Energy Conservation Act 2001 in Buildings • Energy Saving Initiative in Windows: • Window glass panes have been fitted with reflective sun-films. • Window frame and leaf have been leak-proof. • RACs have been fitted at a higher level for better cold air circulation [earlier RACs were fitted just above floor level, resulting poor circulation].

14. Adoption of Energy Efficient Process technologies & practices and implementation of Energy Conservation Act 2001 in Buildings • Energy Saving Initiative in Building Envelope: • Building envelope colour has been chosen considering the optical properties of different colour. • It is an established fact that darker colour can absorb and transmit more solar radiation than lighter colour. • For the CSIR Guest House, light cream shade with light sky border combination adopted.

15. Adoption of Energy Efficient Process technologies & practices and implementation of Energy Conservation Act 2001 in Buildings • Energy Saving Initiative : • For residential quarters, we appeal to the allottees by circulating memos for selecting Star rated gadgets only. • We distribute energy saving tips to every household for adoption. • We have already undertaken Energy Audit of Institute & Residential Complexes.

16. Adoption of Energy Efficient Process technologies & practices and implementation of Energy Conservation Act 2001 in Buildings Energy Saving Initiative - Works in hand : • Revamping of electrical distribution network for optimization of cable size, length / routing. • Solar Water Heater installation at CSIR Guest House. • Guest House & Lift Machine room’s Roof Insulation work. • LED lighting for all lift interiors.

17. Adoption of Energy Efficient Process technologies & practices and implementation of Energy Conservation Act 2001 in Buildings • Energy Saving Initiative - Works in hand : • Soft Starter installation for Pumps. • Re-laying of water distribution lines with minimum head loss and reduction in pump-motor size. • Albedo coating for Roofs.

18. Adoption of Energy Efficient Process technologies & practices and implementation of Energy Conservation Act 2001 in Buildings • Energy Saving Initiative : A Pledge For the sake of our children and the next generation, let us do ENERGY CONSERVATION & Conservation of precious potable water, whatever way we can. Let us begin with our own home lighting by selecting AC / Fridge & other gadgets with Energy Star Rating only, and no geysers but Solar Hot water system, at least who have the privilege of having own roof-top or balcony.

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