TECHNICAL WORKING GROUP III : Energy Efficiency Master Plan Hotel Grand Candi, 10-11 July 2011.

TECHNICAL WORKING GROUP III : Energy Efficiency Master Plan

Hotel Grand Candi, 10-11 July 2011

Background

Energy has a very important role and become a basic necessity in national sustainable development. Therefore, energy should be used sparingly, rational, and wisely so that the energy needs in the present and the future can be met.

Background

If the policy to conserve energy, encourage use of renewable energy and carbon emission reduction is adopted, the energy requirement would be reduced by 12-16 percent.

Background

Presidential Instruction No. 9 of 1982 .The steps of energy conservation through:

a) The energy-saving campaignb) Training of conservationc) Demonstration and examples of energy-efficient appliancesd) conservation technology R & De) Development of energy audit, identify potential efficiency improvements f) Standardization

CURENT SITUATION OF ENERGY CENTRAL JAVA PROVINCE

SECTOR FOR EFFICIENCY

HOUSEHOLD

BUSINESS

INDUSTRY

Comparison of Number of Subscribers Household Sector,

Business and Industry

Total Cos-tumer

- 1,000,000.00 2,000,000.00 3,000,000.00 4,000,000.00 5,000,000.00 6,000,000.00 7,000,000.00

HouseHold

Business

Industry

HouseHoldBusinessIndustry

Electricity price comparison of Household Electrical Sector,

Business and Industry

Rp./kWh

-

200.00

400.00

600.00

800.00

1,000.00

HouseHold

Business

Industry

HouseHoldBusinessIndustry

Comparison of the time blazing Household Sector, Business and

Industry

HouseHold Business Industry0

50

100

150

200

250

300

Average Time per Costumer

Avarage Time per Costumer

PLAN TARGET OF ENERGY EFFICIENCY

The details and profile of energy use in the household sector, industrial, and commercial buildings in Central Java.1

Identification of energy waste and potential savings in the household sector, industrial and commercial buildings. 2

Recommendations of energy saving measures.3

The priority or order of application of energy conservation based on the technical, financial and environmental.

4

The feasibility study recommended Energy Conservation Projects which require a fee (medium / high cost).5

1982

1991

1995

2005

2006

ENERGY CONSERVATION

POLICY

2007

Presiden Instruction No. 9 Year 1982 in Energy Conservation

Presidential Decree No. 43 Year 1991 in Energy Conservation

Master Plan in National Energy Conservation Year 1995 (Ministrial Decree No. 100/48/M.PE/1995) and revised in year 2005

Presiden Instruction No. 10 Year 2005 in Energy Eficiency and MESDM regulation No. 0031 Year 2005 in Energy Efficiency Procedure.

Law No. 30 Year 2007 Energy

Presiden Instruction No. 2 Year 2008 in Energy and Water Efficiency

2008

Presiden Regulation No. 5 Year 2006 in National Energy Policy

2009 Government Regulation No.70 Year 2009 Energy Conservation

2002 Law No. 28 Year 2002 in buildings

ENERGY CONSERVATION NATIONAL POLICY

LEGAL

BASIS

LEGAL

BASIS

Provide energy conservation information

dissemination, such as

campaigns, training, seminars

workshops, and pilot.

Efficient and Saving in Energy Usage

Make regulations

requiring the implementation

of energy conservation to companies or

industries, such as

legislation, regulations regarding

licensing in all sectors.

Provide incentives related to

energy conservation

activities, such as

providing investment

incentives and awards for

energy conservation.

Impose energy

conservation standards, such as SNI

Energy Conservatio

n in buildings in the law and licensing.

Develop plans based

electrical energy

needs of efficiency. (Distric)

Local Government / State

Regional Regulation and Policy Efficiency

1 2 43 5

Action Plan for Energy Efficiency

ACTION PLAN FOR

TECHNICALInvestment plan for the

medium-term measures with a

payback period of 1-5 years.

Long-term strategy

(eg. awareness campaign).

Low cost or no cost by immediate

action with a payback 1 year

Step Implementation of Energy Efficiency

Awareness and EducationCampaignTraining

EducationPilot Project

Dialog ForumMulti Sector

ControllingEnergy Audit

Energy ManagementStandardization

Procurement Inisiative

InsentifFiscal Insentive

Subsidy diversion Appreciation Market

transformation Partnership

Procurement Initiative

HOUSEHOLD SECTOR

No Cost.By turning off 2 bulbs in specific time

(ex: 5pm – 10pm). Bulb has 60 Watts, every house can saves 600 watts.

in one month,

every house can save :

= Rp. 15.435,-

Everymonth saving Rp.

15.435,- x 6002195

= Rp. 92.643.879.830

It saves up to 108 GW

LEVEL

Price (Rp./kWh)

HouseHold

Type - 1 (450VA) 495,00

Type - 1 (900VA) 495,00

Type - 1 (1300VA) 790,00

Type - 1 (2200VA) 795,00

Type – 2 890,00

Type – 3 1.300,00

AVERAGE 857,50

Before Saving Energy After Saving Energy

6,260,000,000

6,280,000,000

6,300,000,000

6,320,000,000

6,340,000,000

6,360,000,000

6,380,000,000

6,400,000,000

6,420,000,000

6,440,000,000

Total energy sold 1 year(kWh)

HOUSEHOLD SECTOR (investment plan)We are targeting people who want to change the

light bulbs into energy saving lamps is 20%. Active time ± 5 hours.

  Conventional Energy Saving

Life time ( hours) 1.000,00 6000-10000

Replacement ( Month) 8,00 50,00

Energy Consumed (Watt) 180,00 42,00

Price (Rp) 10.000,00 35.000,00

Electric Cost (1300VA)(IDR) 790,00 790,00

Watt Hour per month 8.280,00 1.932,00

kWh per month 27,00 6,30

Monthly payment 7.716,96 1.800,62

Monthly payment for 3 bulb 23.150,88 5.401,87

Total Household Customer

LEVEL

Energy cost Total Household

Per kwh (IDR) Customer

Type - 1 (450VA) 495,00 3.980.991,00

Type - 1 (900VA) 495,00 1.693.816,00

Type - 1 (1300VA) 790,00 215.524,00

Type - 1 (2200VA) 795,00 85.470,00

Type - 1 (The Rest) 795,00 0,00

Type – 2 890,00 23.553,00

Type – 3 1.300,00 2.841,00

Type - 4 1.300,00 0,00

6.002.195,00

For three classes (450, 900, 1300 VA)

For the one month:With the light bulb uses = 27 kWhWith energy saver bulbs = 6,3 kWh

450 VA = 20,7 x 790 x 495 x 3.980.991 = 13.020.229.164,60

900 VA = 5.539.794.609,60 1300VA = 704.892.794,40Total saving cost = Rp.

19.264.916.568,60

Save:

20,7 kWh

For the second month and so on we just need to accumulate of the total saving cost per month.

With investment for three category is Rp. 35.000,- x total household

customer x 20%= 41.232.317.000,00 / month

So NPV can be found as shown in the graphic:

For three category (450, 900, 1300 VA)

For three classes (450, 900, 1300 VA)

We can see that the payback will be got after almost only two-half months.

1 2 3 4 5 6 7 8 9 10 11 12

-50,000,000,000.00

0.00

50,000,000,000.00

100,000,000,000.00

150,000,000,000.00

200,000,000,000.00

250,000,000,000.00

NPV

Replacement the refrigeratorFor general, the old refrigerator: 0,15 kW

the new ones: 0,07 kW (single door)

Using time is 24 hours and discount rate 12% / year.

BEFORE :

acc. Energy/month = 0,15 x 24 x 30 days = 108

acc. Energy cost = 108 x Rp 495,- = Rp. 53.460,-

With IRR= 0,99 << , DR = 0,01

Monthly cost = (IRR x DR x acc. Energy cost)

= Rp. 52.930,69

AFTER : Rp. 22.936,63

Replacement the refrigerator

cost/month(thousand) energy use/month(kW)0.00

20.00

40.00

60.00

80.00

100.00

120.00

COMPARISON OF COST AND ENERGY USING BEFORE AND AFTER SAVING

beforeafter

Replacement the refrigeratorEnergy cost saving = Rp. 29.994,06 PER MONTH

With the investment to buy new refrigerator is Rp. 1.000.000,-

The payback is after 60 month or five year.

1 4 7 10 13 16 19 22 25 28 31 34 37 40 43 46 49 52 55 58 61 64 67 70 73 76 79 82

-1200000

-1000000

-800000

-600000

-400000

-200000

0

200000

f(x) = − 160.165560384076 x² + 26291.3676894095 x − 996313.136873353NPV

NPVPolynomial (NPV)

PLN’s benefit

Power Number of Total Subsidy Energy Savings PLN regeneration

cost

ConnectedTargeted

Customers 50% (kWh) saving (IDR)

450 VA 796.198 557.338.740.000,00 298.096.606,08 745.241.515.200,00

900 VA 338.763 237.134.240.000,00 126.832.942,08 317.082.355.200,00

1300 VA 43.105 30.173.360.000,00 16.138.437,12 40.346.092.800,00

Total 1.178.066 824.646.340.000,00 441.067.985 1.102.669.963.200,00

Business Sector

Increasing the awareness of costumer’s electrical usage

Replacing the conventional tools with the energy saving one

TIME MANAGING

According to survey in a hotel in Central Java, because of time managing, this hotel can save the price up to Rp 62,927.44 a day.

It mean, in 1 month, that hotel can save up to Rp.188,782.32.

If all hotel in Central Java (106 star hotels) organize a usage of its electrical tools, hotel business in Central Java can save money up to Rp 20 million/month.

Just imagine, there’s 1090 not starred hotels in Central Java.

Replacing conventional bulbs to energy saving bulbs

With the same calculation with the household, for replacing 20 lamps, we get chart as below:

773,129,389

1,163,617,070

3,487,554,951

1,049,008,756

1,635,261,145

6,453,875

(Rp.)

B1-450VAB1-900VAB1-1300VAB1-2200VAB - 2B - 3

Replacing solar-fuel boiler with heat exchanger

Comparison solar-fuel boiler with heat exchanger

  Boiler Heat Exchanger

Price (Rp.) 35,000,000 42,000,000

Diesel Oil cost Rp 4,500 -

Diesel Oil cost (for 2500 VA) Rp 1,800/kWh -

watt hours per days 10,000 -

watt hours per month 300,000 -

kWh per month 300.00 -

Monthly payment 540,000.00 -

From the data above, it can be concluded that the boiler using additional cost per month as a fuel, while the heat exchanger is not.

From the data above obtained calculation results that by replacing the heat exchanger obtained BEP (Break Event Point) in the next 11 months from the time of initial purchase.

Replacing solar-fuel boiler with heat exchanger

Industrial Sector

The main factors of energy optimization are as follows:

Settings "on time", just as long as needed only.

Modifications at the time, detector occupancy, building automation systems, and so on.

Optimal speed settings.

Case Study

In PT PANCAMANUNGGAL WIRADINAMIKA SEMARANG.

70%

ENERGY SAVINGOVER-SIZE

11 kW

15 kW

18,5 kW

DESIGN = 12,5 kW

ACTUAL = 12,5 kW x SAFETY FACTOR = 12,5 kW x 1,3

= 16,25 kW

OPTIONAL = 18,5 kW

ENERGY SAVINGOVER-SIZE

SAVING :

- REPLACEMENT MOTOR = 18,5 kW - 15 kW = 3,5 kW

- INSTALLATION VARIABLE SPEED DRIVE = 18,5 kW - 12,5 kW = 6 kW

VARIABLE SPEED DRIVE WILL USE ENERGY ACCORDING TO THE LOAD CAPACITY NEEDS.

ENERGY SAVINGOVER-SIZE

ENERGY SAVINGOVER-SIZE

ENERGY SAVINGOVER-SIZE

The savings on motor done with the installation of temperature sensors and the installation of variable speed drives.

Variable speed drives will use energy according to the capacity needs of the load by regulating the speed of the fan motor.

ENERGY SAVINGSPEED vs ENERGY

APPLYING THE PRINCIPLES:SPEED ≈ FLOW ≈ (PRESSURE)2

≈ (ENERGY)3

0,9 SPEED ≈ 0,9 FLOW

≈ (0,9)2 ≈ 0.81 PRESSURE

≈ (0,9)3 ≈ 0,729 ENERGY

REDUCTION OF SPEED 10 % SAVE ENERGY 27,1 %

ENERGY SAVINGSUCCESS STORY (I)

IMPLEMENTATION VSD FOR COMPRESSOR 75kWIN PT TOSSA SAKTI SEMARANG

MEASURING RESULT

50 Hz

15 Hz

45 Hz

15 Hz

50 Hz

50 Hz

FREQUENSI

181914UNLOADING

909275LOADING

182015UNLOADING

10210289LOADING

607263UNLOADING

9310599LOADING

T(A)S(A)R(A)POSITION

ENERGY SAVINGSUCCESS STORY (I)

MEASURING RESULT (2)

Excellent52,1%3,86745 Hz

VSD

Very good46,6%4,31350 Hz

VSD

No good0%8,07550 Hz

without VSD

RESULTSAVINGKWH10minutesDESKRIPTION

ENERGY SAVINGSUCCESS STORY (II)

IMPLEMENTATION VSD FOR WATER PUMP 30 kWIN PT TOSSA SAKTI SEMARANG

MEASURING RESULT

10,5%42,2746,243,237,4After (50Hz)

35%30,5733,032,026,7After (45Hz)

TSR

20,420,4

47,248,6

59,8%19,016,2After (40Hz)

0%47,2345,9Before(50Hz)

SavingAmp Avg

Amphere PhasaDescription

ENERGY SAVINGSUCCESS STORY (II)

MEASURING RESULT (2)

Very excellent

75,6%0,56040 Hz VSD

excellent61,9%0,87645 Hz VSD

Very good48,2%1,19050 Hz VSD

No good0%2,30050 Hz without VSD

RESULTSAVINGKWH5minutesDESKRIPTION

ENERGY SAVINGSUCCESS STORY (II)

CALCULATION RESULT

Very excellent

Rp86.593.536,00,56040 Hz after

excellentRp70.867.353,00,87645 Hz after

Very goodRp55.240.704,01,19050 Hz after

No good0 rupiah2,30050 Hz before

RESULTSAVING1year

KWH 5minutes

DESKRIPTION

ENERGY SAVINGSUCCESS STORY (III)

FINANCIAL ANALYSIS OF ENERGY SAVING PROGRAMPT SINAR PANTJA DJAJA SEMARANG

TOTAL kW’s MOTOR-MOTOR FAN AND PUMP

SPINNING UNIT 1 = 382,5 kWSPINNING UNIT 2 = 420,0 kWSPINNING UNIT 3 = 577,5 kWSPINNING UNIT 4 = 594,0 kW

TOTAL = 1.974,0 kW

ENERGY SAVINGSUCCESS STORY (III)

TARGET of SAVING :

TOTAL = 1.974,0 kW x 35 % PER HOUR

= 690,9 kW x 24 h x 30 d PER MONTH

= 497.448 kW x Rp. 550,-

= Rp. 273.596.400,- PER MONTH

ENERGY SAVINGSUCCESS STORY (III)

INVESTATION

VSD = Rp. 1.000.000,- / kW

PAYBACK PERIOD

Rp. 1,974 M / Rp. 273.596.400,- PER MONTH

7,2 MONTH

HVAC SYSTEM

HVAC : Heating Ventilation Air Conditioner

The HVAC Drives Specialist has specifications advantages such as:

Save money Easy commissioning Application menus Quick menu Motor Rotation Check PID-auto tuning Maintenance free Save space

ENERGY SAVING

VSD implementation on the water pump with 55 kW at PDAM Kadipiro

The measurement results (1)

20%76718471After

TSR

9894 0%9490Before

SavingAmp Avg

Amphere PhasaDescription

ENERGY SAVING

The measurement result (2)

Good28,5%6362,945 Hz VSD

No good0%8900,9850 Hz tanpa VSD

RESULTSAVINGKWH7 DaysDESKRIPSI

ENERGY SAVING

The Measuring result.

Without Inverter:8900,98 / 168 hours = 52,98 kWh

With Inverter6362,9 / 168 hours = 27,87 

So, it saves energy 25,11 kWh.

ENERGY SAVING

With Target saving:Total = 25,11 x 24 x 30 days per month

= 18079,2 kW x Rp. 765,- = Rp. 13.830.588,- per month

With investment:VSD 55 kW = Rp. 30.000.000,-Payback Periode:

30.000.000 / 13.830.588 = 2,2 months

Thank you for your attention