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V.K. MITTAL SUPERINTENDING ENGINEER (E) CENTRAL PUBLIC WORKS DEPARTMENT GOVERNMENT OF INDIA NEW DELHI ENERGY CONSERVATION IN EXISTING BUILDINGS IN PRACTICE.

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Presentation on theme: "V.K. MITTAL SUPERINTENDING ENGINEER (E) CENTRAL PUBLIC WORKS DEPARTMENT GOVERNMENT OF INDIA NEW DELHI ENERGY CONSERVATION IN EXISTING BUILDINGS IN PRACTICE."— Presentation transcript:

1 V.K. MITTAL SUPERINTENDING ENGINEER (E) CENTRAL PUBLIC WORKS DEPARTMENT GOVERNMENT OF INDIA NEW DELHI ENERGY CONSERVATION IN EXISTING BUILDINGS IN PRACTICE

2 CENTRAL PUBLIC WORKS DEPARTMENT PREMIER CONSTRUCTION AGENCY OF GOVT. OF INDIA. MORE THAN 150 YEARS OLD. ALL INDIA PRESENCE. MULTIPLICITY OF WORKS. STRONG TECHNICAL BASE ARCHITECTURAL, CIVIL, ELECTRICAL & HORTICULTURE WINGS. CODES, SPECIFICATIONS & SCHEDULES WIDELY FOLLOWED BY OTHER GOVT. DEPARTMENTS, AUTONOMOUS BODIES, CONSULTANTS.

3 CENTRAL PUBLIC WORKS DEPARTMENT PRIMARY FUNCTIONS. CONSTRUCTION & MAINTAINANCE OF GOVT. RESIDENTIAL AND NON-RESIDENTIAL BUILDINGS THROUGH OUT THE COUNTRY. MAINTAIN LARGE NUMBER OF PROMINENT BUILDINGS IN DELHI. PRESIDENT HOUSE, PARLIAMENT HOUSE. SOUTH BLOCK, NORTH BLOCK. VIGYAN BHAWAN, SUPREME COURT. MOST OF THE MINISTRIES OF GOVT. OF INDIA

4 CENTRAL PUBLIC WORKS DEPARTMENT A RESPONSIBLE DEPARTMENT OF GOVT. OF INDIA. TOOK INITIATIVE TO IMPLEMENT ENERGY CONSERVATION IN GOVT. BUILDINGS. ENERGY AUDIT OF A LARGE NUMBER OF BUILDINGS CONDUCTED IN 3 PHASES.

5 PHASE – I PRESIDENT HOUSE PMO SHARAM SHAKTI BHAWAN & TRANSPORT BHAWAN.

6 PHASE – II PARLIAMENT HOUSE, NORTH BLOCK, SOUTH BLOCK, UDYOG BHAWAN, KRISHI BHAWAN, SHASTRI BHAWAN, NIRMAN BHAWAN, VIGYAN BHAWAN, SUPREME COURT CENTRAL GOVT. HOSPITALS ETC.

7 PHASE – III UPSC, NAGMA, AGCR, CAG, NIRVACHAN SADAN JANPATH ETC.

8 ELECTRICAL CONSUMPTION IN COMMERCIAL SECTOR. ACCOUNTS FOR ABOUT 8% OF TOTAL ELECTRICITY SUPPLIED BY UTILITIES. ANNUAL INCREASE 11-12%. AVERAGE ELECTRICITY GROWTH IN ECONOMY 5-6%. ANNUAL INCREASE ON ACCOUNT OF. NEW BUILDINGS. INCREAS IN ENERGY INTENCITY OF EXISTING BUILDINGS. STUDY OF ENERGY CONSUMPTION PATTERN OF EXISTING BUILDINGS INDICATE 5-10% GROWTH. COMMERCIAL BUILDINGS

9 COMMON SERVICES. LIGHTING AIR-CONDITIONING, HEATING, VENTILATION. ELEVATORS. WATER SUPPLY (PUMPS). WATER HEATING (WINTER). COMPUTERS. PHOTO COPIERS. MISC OFFICE APPLIANCES.

10 COMMERCIAL BUILDINGS. SOURCES OF POWER LOCAL SUPPLY COMPANY (UTILITIES) DIESEL GENERATING SETS (STAND BY)

11 COMMERCIAL BUILDINGS. COST OF POWER LOCAL SUPPLY – RS. 5/- TO RS. 6/- PER UNIT (KWH). DG SET SUPPLY – RS. 12/- TO RS. 14/- PER UNIT.

12 COMMERCIAL BUILDINGS. DISTRIBUTION SYSTEM OF POWER RECEIVE - AT 11 KV. STEP DOWN TRANSFORMERS - 11 KV/415V. DISTRIBUTION TO VARIOUS LOAD THROUGH LT PANEL & NETWORK OF UG CABLE AND RISING MAINS METERING AT 11 KV. BOTH KWH AND KVAH METERING.

13 COMMERCIAL BUILDINGS. METERED ENERGY = CONSUMPTION IN SERVICES. + LOSSES IN DISTRIBUTION (TRANSFORMERS + UG CABLE + PANELS )

14 CONSUMPTION IN SERVICES = INPUT POWER x TIME INPUT POWER =LOAD DEMAND / EFFICIENCY COMMERCIAL BUILDINGS.

15 FOR BEST RESULTS REDUCE CONNECTED LOAD REDUCE TIME IMPROVE EFFICIENCY REDUCE LOSSES IN DISTRIBUTION.

16 BASIC FUNDAMENTAL PRINCIPLES OF ENERGY – CONSERVATION COMMERCIAL BUILDINGS.

17 TURN ON AS LATE AS POSSIBLE ONLY AS MUCH AS REQUIRED ONLY WHEN REQUIRED ONLY WHERE REQUIRED.

18 TURN OFF AS EARLY AS POSSIBLE OPTIMIZE USE OF NATURAL RESOURCES SUCH AS DAYLIGHT, SOLAR ENERGY, FRESH –AIR. PREVENT WASTAGE / LEAKAGE (WATER, AIR). OPTIMIZE REQUIREMENT (SPACE, LUX-LEVEL, TEMP, WATER). USE DIFFERENT SPACE FOR DIFFERENT FUNCTIONS - WORKING ALONE OR MEETING FEW PERSONS, HOLDING LARGE MEETING, HAVING LUNCH /RELAXING. REDUCE REQUIREMENT BY REDUCING HEAT GAIN / HEAT LOSS INFILTRATION / EX-FILTRATION (BUILDING ENVELOPE).

19 COMMERCIAL BUILDINGS. REDUCTION IN LIGHTING LOAD USE DAY LIGHT USE ENERGY EFFICIENT LAMPS & BALLAST. ISTALL LIGHTING CONTROL OCCUPANCY CENSORS. MOTION CENSOR. FIXTURES INSTALLED IN DAY LIGHT AREA PHOTO SENSOR. TASK LIGHTING.

20 COMMERCIAL BUILDINGS. ADVANTAGES OF DAY LIGHT REDUCTION IN POWER BILL. REDUCTION IN LAMP REPLACEMENT COST. REDUCTION IN MAINTAINANCE COST. REDUCTION IN AIR-CONDITIONING LOAD WHICH WILL FURTHER REDUCE POWER CONSUMPTION. INCREASED PRODUCIVITY BY 16%

21 COMPARISION OF FL LAMPS FLTYPE T-12T5 FEATURES LAMP WATTAGE 4028 LAMP DIA (M.M)3816 LUMENS OUT PUT EFFICACY (Lm/W)60104 CRI6572 RATED LIFE500020,000 (BURNING HOURS) CONTROL GEAREM-ECGECG CHOKE WATTAGE TOTAL SYSTEM WATTAGE 53-55W30W. POOR FACTOR SYSTEM VA9030 CRI- COLOUR RENDERING INDEX SUN CRI - 100

22 COMPARISION OF T5& T-12 LAMPS POWER CONSUMPTION OF T- 12 LAMP WITH ELECTROMAGNETIC BALLAST=40+15= 55W POWER CONSUMPTION OF T- 5 LAMP WITH ELECTRONIC BALLAST. = 30 W DIFFERENCE IN POWER CONSUMPTOIN = 25 W SAVING IN ONE YEAR ON ACCOUNT OF REPLACEMENT OF T-12 BY T-5 NORMAL OFFICE WITH 10 HRS.WORKING = 250X10X25 X Rs. 6.5 = Rs ROUND THE CLOCK THROUGH OUT THE YEAR = 365X24X25 X Rs. 6.5 =Rs

23 POWER FACTOR REASONS OF POOR POWER FACTOR INDUCTIVE LOAD LIKE MOTORS (LIFTS, A.C. PLANT, PUMP MOTORS) FL/DISCHARGE LAMPS WITHOUT CAPACITORS. UPS/INVERTERS.

24 POWER FACTOR SOLUTION INSTALL CAPACITOR BANKS (APFC) WITH EVERY TRASFORMER IF BULK LOAD LIKE A/C PLANT IS CLOSE TO SUB-STATION. INSTALL CAPACITOR BANK WITH LOAD (LIKE A/C PLANT) IF LOAD IS FAR AWAY FROM SUB- STATION.

25 POWER FACTOR WHY POOR PF CAPACITOR BANK NOT INSTALLED. CAPACITOR BANK INSTALLED BUT OF INADEQATE RATING. CAPACITOR BANK NOT MAINTAINED. CAPACITOR BANK SWITCHED OFF TO AVOIDE NOISE.

26 POWER FACTOR COMPARISION AT VARIOUS PF VALUES TRANSFORMER RATIO : 11KV /415V. LOAD =1000 KW PF= KVA= LT SIDE CURRENT HT SIDE CURRENT CURRENT RATIO COPPER LOSS(IR)

27 POWER FACTOR MAX LOAD AT VARIOUS PF TRANSFORMER KVA PFMAX LOAD % INCREASE KW KW14% KW36%

28 TRANSFORMERS SAVING IN REDUCTION IN LOSS REDUCTION IN LOSS = 1 KW TRANSFORMER USE = ROUND THE CLOCK LIFE= 20YEARS. REDUCTION IN LOSSES IN LIFE CYCLE = 365X24X20X1KWH = 1,75,200 KWH COST RS PER UNIT FOR 20YRS.= RS. 11,37,500/- PER YEAR.= Rs /- PER MONTH= Rs. 4740/-

29 EFFECT OF VOLTAGE LIGHT FIXTURES COMPARISION OF 3 PHASE AND 1 PHASE VOLTAGE. SINGLE PHASE THREE PHASE LIGHT FIXTURES ARE RATED – V. VOLTAGE REDUCTION 1% WILL SAVE 1.1% ENERGY IN LIGHTING SYSTEM. MAINTAIN VOLTAGE – V 3 PHASE FOR LIGHTING SYSTEM

30 LOAD MANAGEMENT MAINTAN POWER FACTOR = LOAD TRANSFORMERS = 50 to 55%. SWITCH OFF TRANSFORMERS BEYOND OFFICE HOURS. USE MINIMUM TRANSFORMERS DURING WINTER. KEEP THREE PHASE LOAD BALANCED.

31 LIGHT AND FAN SWITCH ON ONLY WHEN REQURED. ENCOURAGE USE OF DAY LIGHT. USE ENERGY EFFICIENT LAMP & BALLAST. MAINTAIN DESIRED LUX LEVEL. MAINTAIN VOLTAGE BETWEEN V SWITCH OFF ALTERNATE LIGHTS IN CORRIDORS. PROVIDE TASK LIGHT. USE ELECTRONIC REGULATORS IN PLACE OF RESISTANCE TYPE.

32 WINDOW – SPLIT AIR-CONDITIONER PROVIDE CENTRAL A/C PLANT IN PLACE OF LARGE NUMBER OF UNITS. REPLACE OLD AND INEFFICIENT UNITS. PROPER MAINTAINANCE SWITCH OFF WHEN ROOM NOT IN USE.

33 WATER MANAGEMENT PREVENT WATER LOSS. REDUCE WATER USAGE USE EFFICIENT PUMPS & MOTORS

34 LIFTS PROVIDE VVVF DRIVE SWITCH OFF LIFTS DURING OFF PEEK HOURS.

35 CENTRAL PUBLIC WORKS DEPARTMENT. ENERGY CONSERVATION MEASURES ACHIEVEMENT SO FAR. SN. NAME OF BUILDING ENCON MEASURE IMPLEMENTED ACCESSED SAVING 1.PRESIDENT HOUSE ESCO16% 2.PMOESCO16% 3.SHRAM SHAKTI BHAWAN & TRANSPORT BHAWANESCO16% 4.NIRMAN BHAWAN90%7% 5.UDYOG BHAWAN80%13% 6.KRISHI BHAWAN40%10% 7.SHASTRI BHAWAN25%6% 8.NORTH BLOCK 50%15% 9.SOUTH BLOCK 50%10% 10.VIGYAN BHAWAN80%3% 11.SUPREME COURT 40%5%

36 CENTRAL PUBLIC WORKS DEPARTMENT. ACHIEVEMENT IN ENERGY CONSERVATION UDYOG BHAWAN WAS AWARDED FIRST PRIZE OF NATIONAL ENERGY CONSERVATION AWARD BY MINISTRY OF POWER FOR THE YEAR

37

38 CENTRAL PUBLIC WORK DEPARTMENT. ENCON MEASURES IMPLEMENTED IN UDYOG BHAWAN. PROVISION OF POWER FACTOR IMPROVEMENT PANELS. REPLACEMENT OF OLD OIL TYPE TRANSFORMERS BY DRY TYPE TRANSFORMERS REPLACEMENT OF OLD WATER SUPPLY PUMPS OF 10 HP BY 7.5 HP PUMPS REPLACEMENT OF CONVENTIONAL FLUORSCENT LAMPS (4X40W) WITH ELECTRO MAGNETIC BALLAST BY T-5 LAMP FITTINGS. PROVISION OF SOLAR WATER HEATING FOR CANTEEN IN PLACE OF ELECTRIC GEYSERS.

39 CENTRAL PUBLIC WORKS DEPARTMENT. OUT COME OF ENCON MEASURES IMPLEMENTED IN UDYOG BHAWAN LAC KWH ANNUAL ELECTRICITY CONSUMPTION PURCHASED FROM UTILITIES ANNUAL ELECTRICITY CONSUMPTION THROUGH DG SET TOTAL ANNUAL CONSUMPTION

40 CENTRAL PUBLIC WORK DEPARTMENT. ENERGY CONSERVATION ON GOING MEASURES IMPLEMENTATION OF VARIOUS ENCON MEASURES IN VARIOUS STAGES IN BUILDINGS. CENTRAL AIR-CONDITIONING OF ONE FLOOR OF NIRMAN BHAWAN. PROVISIONS OF SOLAR PHOTO VOLTAIC CELLS. PROVISIONS OF SOLAR WATER HEATING SYSTEM IN RESIDENCIES OF HONBLE MEMBERS OF PARLIAMENT AND HONBLE MINISTERS OF GOVT. OF INDIA. PROVISION OF CFL LAMPS IN PLACE OF INCANDESCENT LAMP IN RESIDENCES OF HONBLE MPS AND HONBLE MINISTERS OF GOVT. OF INDIA. IN MARCH 09, DEPARTMENT DECIDED THAT ALL CPWD CONSTRUCTIONS SHALL HENCEFORTH BE GREEN.

41 ENERGY CONSERVATION ROAD MAP IN HOUSE MONITORING AWARENESS IN END USERS DISPLAY PLAY CARDS REGULAR TRAINING OF MAINTAINANCE STAFF GOOD HOUSE KEEPING PROPER MAINTAINANCE POST ENERGY MANAGERS INNOVATIVE/ OUT OF BOX SOLUTION

42 ENERGY CONSERVATION CASE STUDY PROMINENT BUILDING SANCTIONED LOAD 3500 KW MAX DEMAND 4300 KW DG SET BEING OPERATED 3 TO 4 HRS PER DAY TO MEET EXCESS OVER SANCTIONED LOAD LOAD BEING SWITCHED OFF BY ROTATION NUMBER OF WINDOW TYPE /SPLIT TYPE AIR- CONDITIONERS INSTALLED (AVERAGE 1.5 TR) Nos. A.Cs MORE THAN 7 YRS OLD AND IN EFFICIENT Nos. AVERAGE POWER CONSUMPTION KW (PER UNIT 1.5 TR)

43 ACS INSTALLED AND MAINTAINED BY DIFFERENT GOVT. DEPARTMENTS PROPOSED SOLUTION REPLACE OLD & INEFFICIENT ACS BY STAR RATED AIR-CONDITIONERS POWER CONSUMPTION OF STAR RATED UNIT = 2 KW POWER SAVED PER UNIT = 0.75 KW POWER SAVED BY 1500 UNITS WITH 0.9 LOAD FACTOR = 1012 KW CASE STUDY

44 INVESTMENT COST PER UNIT STAR RATED (1.5 TR) = RS. 20,000/- LESS SCRAP VALUE OF OLD UNIT (-) = RS. 3000/- NET COST PER UNIT = RS. 17,000/- TOTAL INVESTMENT FOR 1500 UNITS = RS. 255 LACS CASE STUDY

45 ENERGY SAVED PER YEAR PER UNIT =0.75(KW)X7(MONTHS)X22(DAYS)X9(HRS) = KWH TOTAL ENERGY SAVED (PER YEAR)=1039.5X1500X0.9 (LOAD FACTOR)KWH. = KWH COST OF ENERGY SAVED (PER Rs. 5/- PER KWH =Rs.70,16,625/- PAY BACK PERIOD= LESS THAN 4 YEARS. CASE STUDY

46 ADDITIONAL BENEFITS REDUCTION IN MAX DEMAND BY 1000 KW NO NEED TO GET SANCTIONED LOAD ENHANCED NO NEED TO OPERATE DG SET NO NEED TO SWITCH OFF LOAD BY ROTATION MORE COOLING USER SATISFACTION BETTER PRODUCTIVITY

47 METHODOLOGY - SELF REPLACEMENT OR ESCO TIME MONTHS CASE STUDY

48 WNDOW/SPLIT AIR-CONDITIONERS THERE MAY BE MORE THAN 10,000 WINDOW /SPLIT AIR-CONDITIONER WHICH ARE OLD AND ENERGY INEFFICIENT. IF REPLACED THE PEAK DEMAND CAN BE REDUCED BY 7.5 MW.

49 ENERGY CONSERVATION ADOPT AS A WAY OF LIFE THANKS ALL OF YOU


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