UNDIP TEAM TECHNICAL WORKING GROUP III : ANALYSIS OF ENERGY SAVING ELECTRICITY IN CENTRAL JAVA. Grand Legi Hotel Mataram, NTB 26 Feb 2 March 2011

Transcription

1 UNDIP TEAM TECHNICAL WORKING GROUP III : ANALYSIS OF ENERGY SAVING ELECTRICITY IN CENTRAL JAVA Grand Legi Hotel Mataram, NTB 26 Feb 2 March 2011

2 GENERAL INFORMATION OF CENTRAL JAVA PROVINCE 2

3 According to PLN statistic data costumers in Central Java increase about 3.5 % every years. That makes the usage of electrical energy growing steadily while indonesia is in state of electrical crisis resulting in power cutting in random area. Because of that we need to saving the electrical energy from household, business, and industry sectors 3

4 HOUSEHOLD SECTOR FOR EFFICIENCY BUSINESS INDUSTRY 4

5 The most costumers is in household sector instead of another sectors. Because we have a lot of customers from this sector, we can save a lot of energy HouseHold 5

6 Comparison table between each sectors in Central Java LEVEL Total Costumer HouseHold Business Industry Type - 1 (450VA) 3,980, , Type - 1 (900VA) 1,693, , Type - 1 (1300VA) 215, , Type - 1 (2200VA) 85, , Type - 1 (The Rest) Type , , , Type - 3 2, Type TOTAL 6,002, , , Reference: Data dan Statistik Tahun 2009 PT. PLN(Persero) HouseHold 6

7 7,000, ,000, ,002, ,000, ,000, ,000, ,000, ,000, , , HouseHold Business Industry Total Costumer - Business Industry HouseHold HouseHold 7

8 How to Save Energy in Household Sector? Increasing the awareness of costumer s electrical usage Replacing the conventional tools with the energy saving one For example, bulb usage is one of energy saving. HouseHold 8

9 One way to increase the costumers awareness is time managing Example : every houses must turning off 2 bulbs in specific time (ex: 5pm 10pm). That bulb has 10 watts. Then, every houses can save about 100 watts. And every months saving = Rp 9,607,413, = Rp 9.6 billion with just the awareness from citizen to turn bulb off from this household sector, or this can save up to 18GWh HouseHold 9

10 Number of bulb 2 Energy Consumed (W) 10 Time(hours) 5 Price (Rp./kWh) Total Costumer 6,002,195 Saving energy (Rp.) 9,607,413, Saving energy (kwh) 18,006,585 Before Saving Energy After Saving Energy Total Energy Sold (kwh) 6,424,319,568 6,406,312,983 Saving energy : 9.6 Billion rupiah Percentage saving : 0.28% HouseHold 10

11 Total energy sold 1 year(kwh) 6,425,000,000 6,420,000,000 6,415,000,000 6,410,000,000 6,424,319,568 Total energy sold 1 year(kwh) 6,405,000,000 6,400,000,000 6,406,312,983 6,395,000,000 Before Saving Energy After Saving Energy HouseHold 11

12 Beside awareness, we can save the energy with another method, that is with replacing the conventional bulb with the energy-saving bulb For example, every houses replace 3 conventional bulb with the energy-saving bulb, then we can analyze for using energysaving bulb, we can save such amount of kw HouseHold 12

13 Conventional Energy saving Life time (hours) Replacement (month) 8 50 Energy consumed (W) Price (Rp.) 5,000 32,500 Electric cost Rp./kWh (for 1300 VA) watt hours per month 8,280 1,932 kwh per month Monthly payment 5, , Monthly pay for 3 bulbs 17, , HouseHold 13

14 According to counting and analyzing in that chart, the usage of energy-saving bulb in 5 months can give back our money to buy the energy saving bulb. Even, in next months, every houses make such a profit after using the energy-saving bulb. And, the important is, with using this energy-saving bulb, Central Java can save money up to Rp 26.9 billion just from household sector. Percentage : 0.78% HouseHold 14

15 This business sector is a sector which need a lot of energy According to PLN statistic data, the electric cost/kwh in this sector is higher than other sector Business 15

16 LEVEL Price (Rp./kWh) HouseHold Business Industry Type - 1 (450VA) Type - 1 (900VA) Type - 1 (1300VA) Type - 1 (2200VA) Type - 1 (The Rest) - - 1, Type , Type - 3 1, Type TOTAL Reference: Data dan Statistik Tahun 2009 PT. PLN(Persero) Business 16

17 1, HouseHold Business Industry - Business Industry Rp./kWh HouseHold Business 17

18 How to Save Energy in Business Sector? like household sector, in business sector, there s two ways to saving energy Increasing the awareness of costumer s electrical usage Replacing the conventional tools with the energy saving one Business 18

19 To increase the costumers awareness is time managing we can prevent energy wasting when not needed like lamp, water heater in Hotel, etc Example of management time in Santika Hotel Semarang Business 19

20 Analysis of counting energy saving with power cutting in hotels in Central Java Kind of Hotel Star Hotel Non Star Hotel Unit Number of Bulb 10 4 Saving Time(hours) 5 5 Energy Consumed(W) Electric Cost (Rp./kWh) Watt hours per month kwh per month 9 9 Monthly Saving/bulb Monthly Saving/ hotel Total Saving(Rp.) STAR HOTEL 93, ,896,986.8 NON STAR HOTEL 25, ,809,388.0 ALL HOTEL 37,706,374.8 Business 20

21 The second method is replacing conventional with energy saving electrical tools. For example, saving energy can be done just with replacing conventional bulb with energy-saving lamp, just like in household sector. In hotel business, we can replacing solar-fuel boiler with heat exchanger Business 21

22 For simulation, assume that every hotels replace 20 conventional bulbs with energy-saving bulbs. Conventional Energy saving Life time (hours) Replacement (month) 8 50 Energy consumed (W) Price (Rp.) 15,000 32,500 watt hours per month 8,985 1,932 kwh per month Electric cost Rp./kWh (for 450 VA) Electric cost Rp./kWh (for 900 VA) Electric cost Rp./kWh (for 1300 VA) Electric cost Rp./kWh (for 2200 VA) Electric cost Rp./kWh (for Type - 2) 1, , Electric cost Rp./kWh (for Type - 3) Business 22

23 According to counting and analyzing every level from this sector, will produce different saving in every level. Here is a chart for energy saving every level from replacing conventional bulb with energy-saving bulb LEVEL Energy Saving (Rp.) B1-450VA 773,129,389 B1-900VA 1,163,617,070 B1-1300VA 3,487,554,951 B1-2200VA 1,049,008,756 B - 2 1,635,261,145 B - 3 6,453,875 TOTAL B 8,115,025,185 Click me Business 23

24 (Rp.) 3,487,554,951 1,163,617, ,129,389 1,635,261,145 1,049,008,756 B1-450VA B1-900VA B1-1300VA B1-2200VA B - 2 B - 3 6,453,875 Business 24

25 Assume we replacing solar-fuel boiler with heat exchanger. With the data as below, we can analyze advantages of using a heat exchanger than the boiler 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 Monthly payment 540, Business 25

26 From the above data 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. And when calculated by the turn of heat exchanger the importance of the profit of Rp /month, with the amount of 106 hotels, include two star hotels to five star. LEVEL TOTAL HOTELS SAVING ENERGY(Rp) B1-450VA B1-900VA B1-1300VA Because non star hotel (450VA-1300VA) don't use heat exchanger, we don't count them B1-2200VA 51 31,900,056 B ,348,110 B ,706 JUMLAH B ,036,872 Business 26

27 This sector has the highest active work than other sectors. Electrical usage for production must be active for about 12 hours a day. This sector has also consume the highest electrical power than other sectors Industry 27

28 Table comparison of active work between each sector in Central Java LEVEL Avarage Time per Costumer HouseHold Business Industry Type - 1 (450VA) Type - 1 (900VA) Type - 1 (1300VA) Type - 1 (2200VA) Type - 1 (The Rest) Type Type Type Reference: Data dan Statistik Tahun 2009 PT. PLN(Persero) Industry 28

29 Picture of comparison of active work between each sector in Central Java Avarage Time per Costumer 1 year Avarage Time per Costumer HouseHold Business Industry Industry 29

30 kwh per costumer comparison between each sectors in Central Java LEVEL kwh per costumer HouseHold Business Industry Type - 1 (450VA) Type - 1 (900VA) Type - 1 (1300VA) Type - 1 (2200VA) Type - 1 (The Rest) Type ,769 11,802 Type - 3 1, , ,017 Type ,740,000 Industry 30

31 kwh per costumer HouseHold Business Industry kwh per costumer comparison between each sectors in Central Java Industry 31

32 How to Save Energy in Business Sector? Just like in household sector and business sector, there s two ways to saving energy Increasing the awareness of costumer s electrical usage Replacing the conventional tools with the energy saving one Industry 32

33 We can save a lot of energy-saving with turning off nonusage electrical tools. Assume every consumer of industry sector turning off 6 bulbs in 5 hours. After counting, this sector can save up to Rp.156,930,955.20/month, if we convert it into kwh, we can save up to 242,028 kwh/month. Industry 33

34 Total energy sold 1 year(kwh) 4,528,000,000 4,527,000,000 4,526,000,000 4,525,000,000 4,524,000,000 4,523,000,000 4,522,000,000 Before Saving Energy After Saving Energy Total energy sold 1 year(kwh) Number of bulb 6 Energy Consumed (W) 60 Time(hours) 5 Price (Rp./kWh) Total Costumer 4,482 Saving energy (Rp.)/month 156,930, Saving energy (kwh)/month 242,028 Before Saving Energy After Saving Energy Total Energy Sold (kwh) 4,527,128,866 4,524,224,530 Industry 34

35 Replacing the conventional tools with a energy-saving tools can save a lot of energy Or replacing the diesel pump with the electric pump. Industry 35

36 In this sector, we also can replacing the conventional with energy-saving bulbs. Assume that every industry replacing 10 conventional with 10 energy-saving bulbs Industry 36

37 LEVEL Energy saving/month (kwh) Type - 1 (450VA) 8.92 Type - 1 (900VA) Type - 1 (1300VA) Type - 1 (2200VA) Type - 1 (> 2200VA) Type Type Type TOTAL LEVEL Energy Saving/month (Rp) I1-450VA 231,861 I1-900VA 1,096,618 I1-1300VA 1,776,744 I1-2200VA 2,282,650 I1- >2200VA 16,015,359 I ,278,813 I ,292,856 I ,474 TOTAL I 56,682,044 Industry 37

38 Saving Energy in kwh/year 250, , , , , Energy saving Conventional - Industry 38

39 Energy Saving per Year (Rp.) 2,936,000,000,000 2,935,800,000,000 2,935,600,000,000 2,935,400,000,000 ENERGY SAVING BEFORE 2,935,200,000,000 2,935,000,000,000 2,934,800,000,000 2,934,600,000,000 TOTAL I Click me Industry 39

40 This method will have result in saving a lot of electrical energy. Assume we replace 3 diesel oil pump with 3 electric pump. Pump (with genset) Pump (with electric pump) Price (Rp.) 3,850,000 5,000,000 Diesel Oil cost Rp 4,500 - Energy consumed (W) Diesel Oil cost (for 1300 VA) Rp 1,800/kWh - Electric cost (for 1300 VA) - Rp.694.5/kWh watt hours per days 2,356 2,356 watt hours per month 70,680 70,680 kwh per month Monthly payment 127, , Monthly pay for 3 pump 381, , Industry 40

41 From the data above, we know that with replacing diesel oil pump with electric pump, we get profit around Rp 1.2 billion/month from the 5537 industries in Central Java. (after we counting, we get BEP for 6 months). Industry 41

42 Saving in rupiah/month = Rp. 218,638.6 LEVEL TOTAL INDUSTRY SAVING ENERGY(Rp) I1-450VA 32 7,022,681 I1-900VA ,309,281 I1-1300VA ,222,683 I1-2200VA ,785,571 I1-sisanya ,022,705 I ,606,240 I ,092,806 I ,206 JUMLAH I ,210,602,174 Industry 42

43 2,940,000,000,000 2,938,000,000,000 2,936,000,000,000 SAVING ENERGY BEFORE 2,934,000,000,000 2,932,000,000,000 2,930,000,000,000 JUMLAH I Industry 43

44 Electric General Optimisation of lamps Spinning 1 7 WV 3 Inspect Reposition of lamps Weaving 1A Weaving 1B + 1 Prept Weaving 4 Rebeamer + ball warper Activities Implemented Reduction lamp at no machine area Reduction lamp at no machine area Reposition and reduction of lamps Reposition and reduction of lamps Reposition and reduction of lamps Realization KWH/Year Energy efficient lamps Workshop Vehicle Dept Outside lighting Garden lamp of offices Warehouse lamp canopy Warehouse lamp canopy Change Lp. HPL-N 250W to Lp. TL 1X36 W LDR to Rotary Timer Relay (10 have- attach ) Change to Lp. HPL-N 125W dg lp SL 27 W Change to Lp HPL-N 125W dg lp TL 2X40 W Change to Lp HPL-N 250W dg lp TL 1X40 W Industry 44

45 Electric General Activities Implemented Realization KWH/Year Power Genset + PLN Optimisation of Cos Q and monitoring Spinning 1 Optimisation of Dust filter stop 6 KW for 24 hrs for carding Switching off carding motor during main Cleaning cycle 464, , Stop dust filter blowing 2 mc.@30kw for 24 hrs 422, Spinning 1,2,3,4,5,6,7 Spinning 2 Installing timer to control empty tube conveyor in winding Optimisation of vaccum Stop central blower 1 motor 30kw for 24 hrs in winding Switching off carding motors during main cleaning cycle 13, , , Industry 45

46 Spinning 3 Spinning 4 RY Electric General Activities Implemented Switching off carding motors during main cleaning cycle Switching off carding motors during main cleaning cycle Optimisation of supply air fan blowing 2 11 kw Realization KWH/Year 13, , , Spinning 4 RY, 5, 6,7 Optimisation of blower TFO 2 11 kw 921, Spinning 6 Optimisation dust collector blowing 4motor 30kw for 24 hrs/day Switching off carding motors during main cleaning cycle 844, , ,090, In rupiah : 3,090, *Rp. 530= Rp. 1,637,798,776 = 1.6 Billion Rupiah/year For 1 industry Industry 46

47 Electric General Activities Implemented Realization KWH/Year Reposition of lamps TFO & Winding SP 4 Reposition and reduction of lamps 82,022 Energy efficient lamps Change Lp. Iwata 250 W to Lp. Garden 125 W Change Lp. HPL-N 250 W (kanopi) to Lp. TL 2x36 W 13,500 Change Lp. HPL-N 250 W to Lp. SON-H 220 W 108 Power PLN To reduce KVA max /set cos Q 0,99 during WBP 0,703 becomes =1,060 KVAmax 642, Room of Transfomer Spinning Spinning 2 Spinning Change exhaust fan with bird mesh 20, Change exhaust fan with bird mesh 56, Industry 47

48 Electric General Activities Implemented Realization KWH/Year Compressor ST 2 SP 1, 2, 5 & 6 optimisation of transformer Optimisation of transformers 17,600 Spinning 1 Spinning 1,2,4OE,5,6,7 Modification in blening system to stop motor Roller equipment during proces of Rayon (3x0,37 KW during 24 hrs ) Stop Chiller according to process and better outside condition 9,340, , Spinning 2 Stop Multi Mixer 2 8 KW during 24 hrs Line 3 54, Line 2 49, Spinning 3 Optimisation of Central Blower 1 motor 30 KW Ampere total decrease +/- 10 Amp 44, Industry 48

49 Electric General Spinning 4 RY,4OE,5 Spinning 5, 6, 7 Spinning 6 Activities Implemented Stop Supply Air Fan MC. Wind 1x15 KW for 24 hrs/day Stop Return duct Blowing of east location 1x 30 KW for 24 hrs/day Optimisation of air conditioning in Prep (Roving) 1x22KW for 24 hrs/day Stop Waste Dust Collection Blowing of south location (2 x 11 KW) Realization KWH/Year 1,052, , , , Stop Cooling Fan R.Trafo (6 x 0.37 KW) 13, Spinning 7 Optimisation of air conditioning in Drawing 2 x 22KW during 24 hrs/day Stop Supply Air Fan for mc. Winding- (1 x 18.5 KW) 296, , Industry 49

50 Electric General Activities Implemented Realization KWH/Year Weaving 1A, 1B, 1 Prep Optimisation of lighting 487, Optimisation of air conditioning system ( KWH / Month ) 2,421, Weaving 1A, 1 Prep, 2, 3 Change new main motor 3 nos for somet ( KWh / Month ) 15, Stop Operational Blower 60 during yarn breakage KWh / Month ) 42, Weaving 2 Stop Operasional main motor 20 duringyarn breakage ( KWh) 27, Total 15,907, In rupiah : 15,907, *Rp. 530= Rp. 8,430,760,059 = 8,43 Billion Rupiah/year For 1 industry Industry 50

51 Energy Consumption Saving kw h kw h 0 Year First Year Second Year ( ,37) ( ,45) Precentage ( % ) (0.91) (5.1) In Rupiah (Billion/Year) 1.6 8,43 Industry 51

52 52