Presentation On Energy Audit of PSWR (HQ), Srimohini Complex, Nagpur 01 February 2010.

Presentation On Presentation On Energy Audit of PSWR Energy Audit of PSWR

(HQ), Srimohini (HQ), Srimohini Complex, NagpurComplex, Nagpur01 February 201001 February 2010

10/04/23

Exploring Heights ..................... Setting Standards .................... Marching Towards ExcellencePower Sector Western Region 2

At the outset ..At the outset ..

A Big Thank You for-

Executive Director, PSWR for his constant reminder for this energy audit to happen.

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ObjectiveObjective

At PSWR (HQ), Nagpur Office Complex:

To identify potential areas for energy saving.

To minimize Energy Bill

To suggest long term Energy Conservation Strategies to be adopted.

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ExclusionsExclusions

The following are excluded :

5th Floor SAS area

Diesel Engine and its expenses

Water related expenses.

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BHEL,PSWR (HQ), Nagpur BHEL,PSWR (HQ), Nagpur Office: Background Office: Background InformationInformation

Office Complex Opened in 1989

The lighting and Air Conditioning System has

remained almost unchanged for the last twenty

years.

Occupancy has increased more than 100% thus

increasing the load on the air conditioning

system and energy consumption.

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Data Collection

Measurements

Identification of potential area for

improvement.

Technical Discussion

Evaluation of Projects

and now… the Presentation

METHODOLOGY

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Data Collection

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Energy Bill for the Last 24 MonthsEnergy Bill for the Last 24 Months

YEARUNITS ENERGY COST UNITS ENERGY COST

JAN 10289 75459.00 13099 209245.00FEB 12559 127730.00 14175 263964.00MAR 11632 83499.00 20382 196605.00APRIL 17912 121314.00 26483 245116.00MAY 21154 171307.00 21334 202739.00JUNE 21154 218561.00 25049 229737.00JULY 25609 145669.00 30980 303380.00AUGUST 21175 182282.00 26535 273338.00SEPT 19816 180813.00 29126 294974.00OCT 22572 203248.00 23246 222511.78NOV 17214 159876.00 23642 240049.82DEC 20394 186586.00 20050 220832.86

2008 2009

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Energy Consumption PatternEnergy Consumption Pattern

0

5000

10000

15000

20000

25000

30000

35000

Series1

Series2

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Cost of Energy ConsumptionCost of Energy Consumption

0.00

50000.00

100000.00

150000.00

200000.00

250000.00

300000.00

350000.00

Series1

Series2

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Understanding Components of Energy BillUnderstanding Components of Energy Bill(Example Dec 09)(Example Dec 09)

SLNO DESCRIPTION RUPEES

1 NO OF UNITS @Rs7.15 for 20050 units Rs 143357.00

2 Additional Charges @42p/unit Rs 7017.00

3 E.D @13% Rs 23170.00

4 Demand Charges Rs 17700.00

5 Power Factor Penalty/Incentive Rs 24953.00

6 Total Rs 2,16,197.00

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Payment of Penalty / Incentive due to Payment of Penalty / Incentive due to Power Factor during Last 24 MonthsPower Factor during Last 24 Months

MONTHYEAR-2008 YEAR-2009UNITS P.F. Penalty/ IncentiveUNITS P.F. Penalty/ Incentive

JAN 10289 0.98 -2046 13099 0.92 0FEB 12559 0.95 0 14175 0.95 0MARCH 11632 0.93 0 20382 0.91 0APRIL 17912 0.91 0 26483 0.91 0MAY 21154 0.89 2979.29 21334 0.92 0JUNE 21154 0.91 0 25049 0.92 0JULY 25609 0.90 0 30980 0.86 13123.79AUGUST 21175 0.90 0 26535 0.82 20557.31SEP 19816 0.92 0 29126 0.82 22284.39OCT 22572 0.90 0 23246 0.87 7984.63NOV 17214 0.91 0 23642 0.81 20215.65DEC 20394 0.90 0 20050 0.77 24953.24

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Measurements

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Components of Energy ConsumptionComponents of Energy Consumption

SR.NO.

DESCRIPTION POWER (In KW)

PF DUTY CYCLE (In HOURS)

CONSUMPTION PER DAY IN

KWH

CONSUMPTION PER MONTH

IN KWH

1 AIRCOOLED AC-1 (CANTEEN SIDE) 7.21 0.9 8 57.68 1730.42 AIRCOOLED AC-2 (CANTEEN SIDE) 7.25 0.63 8 58 17403 WATERCOOLED AC -1 (CANTEEN SIDE)5.28 0.52 8 42.24 1267.24 AIRCOOLED AC-1 (ED OFFICE SIDE) 9.1 0.7 8 72.8 21845 AIRCOOLED AC-2 (ED OFFICE SIDE) 8.26 0.67 8 66.08 1982.46 WATERCOOLED AC-1 (H.R SIDE) 6.08 0.61 8 48.64 1459.27 WATERCOOLED AC-2 (H.R SIDE) 6.61 0.62 8 52.88 1586.48 WATERCOOLED AC-3 (H.R SIDE) 6.64 0.63 8 53.12 1593.69 CONDENCER WATER PUMP 7.25 0.76 8 58 174010 COOLING TOWER FAN 4.13 0.75 8 33.04 991.211 LIGHTING 5th FLOOR 3.56 0.78 12 42.76 1282.812 LIGHTING 6th FLOOR 3.96 0.92 12 47.52 1425.6

TOTAL 18982.8

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Components of Energy Consumption (Contd.)Components of Energy Consumption (Contd.)

Air Conditioning System

• Air Cooled ACs – 40%

• Water Cooled ACs – 30%

• Cooling Tower – 15%

• Total- 85 %

Lighting – 15 %

Total Energy- 100%

Components of Energy Consumption (Contd.)Components of Energy Consumption (Contd.)

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Indoor Air QualityIndoor Air Quality

Indoor Air Quality at PSWR (HQ), Shrimohini Complex, NagpurSR.NO. LOCATION VOC(PPM)CO2(PPM)

1 Technical Services Cabins24.7 12062 Near Canteen 24 13353 Purchase Department22 9604 GM P&P's Cabinn 25.6 7505 Head PMX Cabin 24 6606 PMX Department 24.6 9707 Receptionist's Cabin 21 11008 ED's Chamber 23.9 6469 ED's Secretariat 23 825

10 HR DEPT 21 81011 Finance Department 22.5 96013 Conference Hall 22 900

Average 23.19 926.83

Recommended Values of CO2 is 400ppm and VOC is 10ppm

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Office Occupancy Over Last Five YearsOffice Occupancy Over Last Five Years

Office Occupancy at PSWR (HQ), Shrimohini Complex, Nagpur

SR.NO. Year Occupancy in the 1st Month

1 2005 57

2 2006 66

3 2007 62

4 2008 102

5 2009 115

6 2010 111

Technical DiscussionsTechnical Discussions

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Shot-Term SuggestionsShot-Term Suggestions

Areas Where immediate Improvement can take place :

Power Factor Improvement

Cooling Tower

Improving the Indoor Air Quality

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Power Factor ImprovementPower Factor Improvement

Suggestion:

Installation of Capacitance Bank along with Power factor Controller

Approximate Cost: Rs 65000.00

Payback Period: Two Months

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Cooling TowerCooling Tower

Suggestion:

Replacing the Water Cooed Air Conditioners with Air Cooled.

This will make the cooling Tower Redundant.

Approximate Cost: 4 x Rs175,000.00 that is Rs7.00 Lakhs

Payback Period: Approximately 2 years

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Indoor Air Quality ImprovementIndoor Air Quality Improvement

Suggestion:

Installation of Ozonizers

This will Reduce CO2 concentration

Reduce Fresh Air intake

Reduce Energy Consumption

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Long Term SuggestionsLong Term SuggestionsThis suggestions are in line with Recommendation of

Meeting of BHEL’s Apex Committee on Energy Management Dated 31st December 2009

1. Exploring installation of Grid Interactive

Solar Power Unit on the rooftop

2. Replacing all the old Tube lights with CFL or LEDs. (The BHEL Board on the rooftop can be immediately changed to LED types.)

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Thanks to……..Thanks to……..

HR Department for providing us the required Data

Shreem Capacitors Pvt. Limited for technical discussions on Power Factor Improvement

Bluestar for technical discussion on Energy Audit of Air Conditioning system.

Omniscient Treatment Technologies for indoor air quality measurement and suggestions.

Presentation On Energy Audit of PSWR (HQ), Srimohini Complex, Nagpur 01 February 2010.

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Transcript of Presentation On Energy Audit of PSWR (HQ), Srimohini Complex, Nagpur 01 February 2010.