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Electrical KWH consumption at Feeder No.1 on (6th  – 11th) Jan. 2012

Remarks:

1-  High KWH consumption about 575 KW at 3:00 pm

2-  The lowest KWH consumption about 75 KW during no load at the building after office hours.

High KWH

Lowest KWH

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Electrical KWH consumption at Feeder No.2 on (12th  – 18th) Jan. 2012

Remarks:

1-  High KWH consumption about 550 KW on 8:00 am – 4:00 pm

2-  The lowest KWH consumption about 190 KW after office hours

Highest KWH

Lowest KWH

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Finding and recommendation:

1-  Energy consumption at feeder No. 1 as below:

Daily KWH per day Days / months Total KWH consumption

Working days 7,500 20.5 153,750

Saturday 5,420 4 21,680

Sunday 2,110 4 8,440

Holidays 2,500 1.5 3,750

Monthly KWH consumption 187,620

-  Found High power consumption from 4:00 to 6:30 pm

2-  Energy consumption at feeder No.2 as below:

Daily KWH per day Days / months Total KWH consumption

Working days 9,525 20.5 195,262

Saturday 6,320 4 25,280

Sunday 6,850 4 27,400

Holidays 6,500 1.5 9,750

Monthly KWH consumption 257,692

-  Found High power consumption from 8:00 am to 4:00 pm

-  Estimate building energy consumption per month for two feeders = 187,620 KWH + 257,692 KWH = 445,312 KWH

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-  AC power consumption per month as below:

The air conditioning system at the building with capacity as in the schedule below:  No.  Equipment  Rated KW  Qty  Remarks

1 York Centrifugal water cooled chiller. (Cooling capacity

550 RT) 314 KW  2  Chiller No.1 &2 

2 York screw water cooled chiller 

(Cooling capacity 180 RT)108 KW  1  Chiller No.3 

3  Primary chilled water pump No.1 &2  15 KW  2  For chiller No.1 &2 

4  Primary chilled water pump No.3 5.5 KW  1  For chiller No. 3 

5  Secondary chilled water pump No.1&2  30 KW  2  For chiller No.1 &2 

6  Secondary chilled water pump No. 3  11 KW  1  For chiller No. 3 

7  Condenser water pump No. 1&2 55 KW  2  For chiller No.1 &2 

8  Condenser water pump No. 3  15 KW  1  For chiller No. 3 

9  Cooling tower with three cells (700 RT) 30 KW  2 

10   AHU (Air Handling Units with different capacity) 

15 KW 

11 KW

7.5 KW 

1 

8

19 

Office area 

11  Chilled water fan coils with different capacity -  18  Office area 

12  Fresh air ventilation fan 15 KW  2   At roof top 

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End user power apportioning

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- 

ELECTRICAL POWER ANALYSIS AT PLANT ROOM

Chiller No.1 KWH power consumption on 26th

& 27th

Jan. 2012

Remarks:

1-  Records high KWH consumption about 257 KW at 4:00 – 6:30 pm

2-  Chiller operate at 6:30 am & OFF at 6:30 pm

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Chiller No.2 KWH power consumption on 1st to 8th Feb. 2012

Remarks:

1-  Records High KW about 264 KW at (4:00- 6:00 pm )

2-  Chiller operate from 6:30 am to 6:30 pm

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End user power apportioning

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Chiller No.3 KWH power consumption on 1st to 8th Feb. 2012

Remarks:

1-  Record average KW about 96 KW at (7:45 am to 4:00 pm )

2-  Chiller operation at normal working days / 12:00 am to 2:00 am (at average load 62 kw) / 4:00 am  – 6:00 am (at average load 62 kw) /

7:45 am to 4:00 pm (at average 95 kw) / 7:15 pm to 8:00 pm (at average load 110 kw) / 9:00pm to 10:00 pm ( at average load 62 kw)

3-  Chiller operation at week end and holidays /12:00 am to 2:00 am (at average load 62 kw) / 4:00 am – 6:00 am (at average load 62 kw) /

7:15 pm to 10:00 pm (at average load 75kw)

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AC power consumption as below:

1-  Chiller No. 1 or 2

Daily KWH per day Days / months Total KWH consumption

Working days 2,700 12 56,700

Off days 1,650 9 14,850

Monthly KWH consumption 71,550

2-  Chiller No.1 &2 (Primary & secondary Chilled water pumps + condenser water pump) + cooling tower

Daily KWH per day Days / months Total KWH consumption

Working days 600 30 18,000

Monthly KWH consumption 18,000

3-  Chiller No.3Daily KWH per day Days / months Total KWH consumption

Working days 1,200 21 25,200

Off days 530 9 4,770

Monthly KWH consumption 29,970

4-  Chiller No.3 (Primary & secondary Chilled water pumps + condenser water pump) + cooling tower

Daily KWH per day Days / months Total KWH consumption

Working days 480 21 10,080

Off Day 200 9 1,800

Monthly KWH consumption 11,880

5-  Server room ACSU / VRV / Precession AC

No. AC KW KWH/ Month

1 ACSU 55.5 15,084

2 VRV 18.75 13,500

3 Precession AC 45 32,400

Total KW 119.25 60,984

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6-  AHU & Fan coil

Daily KWH per day Days / months Total KWH consumption

Working days 1,800 21 37,800Monthly KWH consumption 37,800

Total AC power consumption:

Item KWH Monthly KWH consumption

Chiller No. 1& 2 260 71,550Primary and Secondary chilled water + Condenser water +

cooling tower fan motors46 18,000

Chiller No.3 96 29,970Primary and Secondary chilled water + Condenser water +

cooling tower fan motors33 11,880

 ACSU / VRV / Precession AC 119 60,984 AHU blower fan motors + fan coils 150 37,800

Total AC consumption (KW) 704 230,184

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Lighting system power calculation:

1- Electrical KWH consumption on office area lighting

LevelLight fitting Monthly operation Hours Monthly KWH

consumptionQty Watt / Fitting Total KW Hours / Day Days/Month

19

100 88 8.80 14 21 2,587

10 36 0.36 14 21 106

12 50 0.60 14 21 176

18

176 88 15.49 14 21 4,553

10 36 0.36 14 21 106

17

178 88 15.66 14 21 4,605

10 36 0.36 14 21 106

16

178 88 15.66 14 21 4,605

10 36 0.36 14 21 106

15

178 88 15.66 14 21 4,605

10 36 0.36 14 21 106

14

188 88 16.54 14 21 4,864

10 36 0.36 14 21 106

9 88 0.79 14 21 233

13

154 88 13.55 14 21 3,984

10 36 0.36 14 21 106

12

178 88 15.66 14 21 4,605

10 36 0.36 14 21 106

11 156 88 13.73 14 21 4,036

10

164 88 14.43 14 21 4,243

10 36 0.36 14 21 106

17 36 0.61 14 21 180

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Level

Light fitting Monthly operation Hours Monthly KWH

consumptionQty Watt / Fitting Total KW Hours / Day Days/Month

9

164 88 14.43 14 21 4,243

10 36 0.36 14 21 106

3

47 50 2.35 14 26 855

19 18 0.34 14 26 124

20 25 0.50 12 26 156

100 44 4.40 5 26 572

111 50 5.55 5 26 722

14 18 0.25 5 26 33

6 44 0.26 14 26 96

2 118 88 10.38 14 21 3,053

1 56 88 4.93 14 21 1,449

M

46 50 2.30 14 21 676

71 44 3.12 14 21 918

54 18 0.97 14 21 286

G

32 28 0.90 14 21 263

10 14 0.14 14 21 41

10 7 0.07 14 21 21

6 88 0.53 14 21 155

7 44 0.31 14 21 91

7 55 0.39 14 21 113

Total KWH 203 Total KWH/ Month 58,204

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2- Electrical KWH consumption on External lighting

No Location

Existing flood light installation at OCBC

Rating KW Time : 3 hours Daily load(KW)

Monthly load(KWh) 30 days

1 Level: 19 150w x 23pcs 3 3.5 12.075 362

2 Level: 9 400w x 42pcs 17 3.5 58.8 1,764

3 Level: 4 150w x 11pcs 2 3.5 5.775 173

4 Level: 2 150w x 20pcs 3 3.5 10.5 315

5 Jln Tun Perak Neon signage 5 3.5 17.5 525

6 Jln Melayu Neon signage 4 3.5 12.25 368

7External walkway lighting

19* 150 Watt 3 12 34.2 1,026

12* T5 0 12 4.032 121

Total KW 33 KWH/ Month 4,654

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3- Electrical KWH consumption on Car park & staircase Lighting

Level

Light fitting Monthly operation HoursMonthly KWHconsumptionQty Watt / Fitting Total KW Hours / Day Days/Month

8 38 44 1.67 12 30 602

7 60 44 2.64 12 30 950

6 64 44 2.82 12 30 1,014

5 62 44 2.73 12 30 982

4 68 44 2.99 12 30 1,077

B1 34 28 0.95 24 30 685

B2 34 28 0.95 24 30 685

ST 1 20 44 0.88 24 30 634

ST2 20 44 0.88 24 30 634

Lower Roof top 11 44 0.48 24 30 348

Total KW 17.00 Total KWH /month 7,612

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4- Electrical KWH consumption on Lift lobby

Level Place Fitting QTY Watt/ FittingKW

consumptionHours/day Day / Month Monthly KWH

consumption

19Lift Lobby 1 5 36 0.18 24 30 129.6

Lift lobby 2 1 88 0.09 24 30 63.36

18Lift Lobby 1 5 36 0.18 24 30 129.6

Lift lobby 2 2 88 0.18 24 30 126.72

17Lift Lobby 1 5 36 0.18 24 30 129.6

Lift lobby 2 2 88 0.18 24 30 126.72

16Lift Lobby 1 5 36 0.18 24 30 129.6

Lift lobby 2 2 88 0.18 24 30 126.72

15Lift Lobby 1 5 36 0.18 24 30 129.6

Lift lobby 2 1 88 0.09 24 30 63.36

14Lift Lobby 1 5 36 0.18 24 30 129.6

Lift lobby 2 2 88 0.18 24 30 126.72

13Lift Lobby 1 5 36 0.18 24 30 129.6

Lift lobby 2 1 88 0.09 24 30 63.36

12

Lift Lobby 1 5 36 0.18 24 30 129.6

Lift lobby 2 2 88 0.18 24 30 126.72

11Lift Lobby 1 5 36 0.18 24 30 129.6

Lift lobby 2 2 88 0.18 24 30 126.72

10Lift Lobby 1 5 36 0.18 24 30 129.6

Lift lobby 2 2 88 0.18 24 30 126.72

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9Lift Lobby 1 5 36 0.18 24 30 129.6

Lift lobby 2 1 88 0.09 24 30 63.36

8 Lift lobby 1 5 36 0.18 24 30 129.6

3Lift Lobby 1 5 36 0.18 24 30 129.6

Lift lobby 2 2 88 0.18 24 30 126.72

2

Lift Lobby 1 5 36 0.18 24 30 129.6

Lift lobby 2 2 88 0.18 24 30 126.72

1

Lift Lobby 1 5 36 0.18 24 30 129.6

Lift lobby 2 2 88 0.18 24 30 126.72

G

Lift lobby4 36 0.14 24 30 103.68

20 44 0.88 24 30 633.6

E- Lobby10 7 0.07 24 30 50.4

38 18 0.68 24 30 492.48

B1 Lift Lobby 5 36 0.18 24 30 129.6

B2 Lift Lobby 5 36 0.18 24 30 129.6

KW 6.95 KWH/Month 5,004

Level Place Fitting QTY Watt/ FittingKW

consumptionHours/day Day / Month Monthly KWH

consumption

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5- KWH consumption at Toilet lighting

Level Place Fitting QTY Watt/ FittingKW

consumptionHours/day Day / Month Monthly KWH

consumption

9 to 19floor 

Male Toilet 88 18 1.584 8 21 266

Female Toilet 88 18 1.584 8 21 266

HandicapToilet

22 18 0.396 0.5 214

Executive toilet 22 18 0.396 0.5 21 4

8th floor 

Male Toilet 6 18 0.108 8 21 18

Female Toilet 6 18 0.108 8 21 18

staff Toilet 1 18 0.018 8 21 3

HandicapToilet

1 18 0.018 0.5 21

0

1st to3rd floor 

Male Toilet 27 18 0.486 8 21 82

Female Toilet 27 18 0.486 8 21 82

HandicapToilet

3 18 0.054 0.5 211

M Toilet 1 18 0.018 8 21 3

G Toilet 1 18 0.018 8 21 3

Total KWH 5 Monthly KWH 750

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6- Electrical KWH Consumption on pantry lighting

Level Place Fitting QTY Watt/ FittingKW

consumptionHours/day Day / Month Monthly KWH

consumption19 Pantry 5 44 0.22 14 21 65

18 Pantry 5 44 0.22 14 21 65

17 Pantry 5 44 0.22 14 21 65

16 Pantry 5 44 0.22 14 21 65

15 Pantry 5 44 0.22 14 21 65

14 Pantry

5

44

0.22

14 21

6513 Pantry 5 44 0.22 14 21 65

12 Pantry 5 44 0.22 14 21 65

11 Pantry 5 44 0.22 14 21 65

10 Pantry 5 44 0.22 14 21 65

9 Pantry 5 44 0.22 14 21 65

3 Pantry 1 18 0.02 14 21 5

2 Pantry 2 44 0.09 14 21 26

1 Pantry 3 44 0.13 14 21 39

Total KW 3 KWH/Month 781

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Summary of KWH consumption in lighting system:

Item Place KW Monthly KWH

1 Office Area 203 58,204

2 External Lighting 33 4,654

3 Staircase and car park 17 7,612

4 Lift lobby 7 5,004

5 Toilet 5 750

6 Food court 4 2,863

7 Pantry 3 781

Total KWH 272 79,868

End user power consumption as below:

Item Place KW Monthly KWH Load %

1 AC 704 230,184 52%

2 Lighting 272 79,868 18%

3 Power plug and other load 174 135,260 30%

4 Total 1,150 445,312 100.00

Remarks:

Other load = Total  – (AC load + Lighting load)

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Power plug and other loads cover:

1- Power distribution load

2- Server power load

3- UPS

4- Lift system

5- Domestic pumps system

6- Other Ventilation fan Load

7- Others

AC

52%

Lighting

18%

Power plug and

other load

30%

Monthly KWH consumption