Survey on Energy Saving by IT Asia Green IT Seminar · 2010. 10. 18. · Survey on Energy Saving by...

Survey on Energy Saving by ITAsia Green IT Seminar

October ５. 2010

Yokogawa Electric Corporation

Hitoshi.Takano

Copyright 2009, Green IT Promotion Council 2

Contents

1. DATA Center by NTT DATA Intellilink Corp.

2. Public Facilities by Panasonic Corp.

3. Plant-1 by Yokogawa Electric Corp.

4. Plant-2 by Toshiba Mitsubishi-Electric

Industrial Systems Corp.

5. Asia Green IT Seminar


Data Center-Singapore-

NTT DATA Intellilink Corporation


Target

・ Target: A dａｔａｃｅｎｔｅｒｉｎＳｉｎｇａｐｏｒｅ

・ Surveyed Items

◆PUE Survey ： Sector2 , Sector1◆Thermal Environment Survey : Sector2 , Sector1◆CFD Analysis ： Sector2

Sector2

Sector1

Data Center Area (Top View)


Temperature distribution of the room was obtained. Center and upper part of the machine room was higher in temperature than other places.

1 2 3 4 5 6 7

1 2 3 4 5 6 7

Image of measurement

Racks

Shield

Support bar

Cable racks

30℃

15℃

16

18

20

22

24

26

28

Thermal Environment Survey


FL+1.8m

Horizontal

A

B

C

A

B

C

Vertical

A-A

B-B

C-C

①

②

A

B

C

A

B

C

①Improvement hot air recirculation

②Improvement of over suction

【Capping】

Installation of cold isle cappings

BeforeAfter


Expected effect

Electric Power Reduction = 841,000KWh / 1Year

・CO2 Reduction460 t-CO2 / 1Year

・3.5% improvement on PUE

Sector1 Sector2


Public Facilities-Chulalongkorn University in Thailand-

Panasonic Corporation


Both equipments and operations were found to be improved in air-conditioners (A/Cs) and lightings.

Summary

The temperature setting of

air conditioners

Targets

Increase the standard temperature setting by 2 degrees to 77℉（25℃）, and encourage people to abide by the rule.

Effective countermeasures

Air Conditioners Reduce cost and CO2 emission by installing multi-air conditioning system

FL stabilizers Replace the current copper steel type stabilizers

with inverter type models.


In some areas, A/Cs had been operated at lower temperatures.

Case1 -Increase temperature setting of A/Cs

75°F⇒ 77°F

If set at too low, like 70°F, then an error message comes out.

Although pre-defined temperature was 75°F, it had not been well managed to be so.The target value has been newly set at higher temperature of 77°F and well monitored.

10% of energy reduction is expected by changing temperature set shown above.

That will be equivalent to around 95.6 CO2-ton/year.

Increase the temperature setting of air conditioners.


Expected effect

CO2 Reduction424 t-CO2 / 1Year

Increase temperature setting

of air conditioners

Use high efficiency air conditioners

Use inverter stabilizers

By other miscellaneous improvements


Plant -1 -Rayong Olefins Co., Ltd. (ROC)&

Thai Acrylic Fibre Co., Ltd. (TAF)-

Yokogawa Electric Corporation


Current status and issuesHeat exchangers (HEXs) - ROC

• No heat performance monitoring tools had been available for hundreds of HEXs, thus maintenance targets were listed up based on human experiences. (Time Based Maintenance; TBM)

• Suppose current one HEX performance is as blue line on the right, it will trace red dotted line if it is not cleaned or trace green dotted line if it is cleaned at next turn around. And the difference between the two lines is energy loss.

Heat transferefficiency

Time

Turn around Turn around

Cleaned

Not Cleaned

Operationcycle

Current HEXperformance

• Cleaning needs to be judged keeping balance between the loss and maintenance cost. But without performance monitoring the judgement is difficult to made.

Differenceof energyconsumption

Fig-3: Heat transfer efficiency

Fig-1: Heat exchanger Fig-2 Fouling


Survey process （Detail）Ethylene cracking furnaces - ROC

Red bar shows worst 5 severely coking tubes.

• Coking status survey of 24 tubes was done at a cracking furnace by newly developed MVSA (Multi variable statistical analysis) based InsightSuiteAE’s

“Smart fault diagnostician”

---Fig-3

• Optimum de-coking steam supply methods were studied based on the severity

Fig-3: Smart fault diagnostician

Tube & related process

Coking rateQuoted from Web sites.

Fig-1: Ethylene cracking furnace Fig-2: Tubes


Expected effect - ROC

Electric Power Reduction = 807,000KWh / 1YearSteam Reduction = 290 t-CO2 / 1YearFuel = 300 t-CO2 / 1Year

CO2 Reduction1400 t-CO2/ 1Year

Heat Exchanger Ethylene Cracking Furnace


Energy-saving proposals and the Effect Control loops @ dryers details - TAF

Fig-1: Dryer and control equipment

Temperature sensors Control valves

Target temperature

Actual temperature

(1) Minimize fluctuation

(2) Lowering set point

Fig-3: Expected tuning result

Time

Temp

Fig-2: Control loops tuning trial (Before)

Fig-4: Control loop tuning trial (After)

Time

Line speed

Time

Temperature


Electric Power Reduction = 6,400KWh / 1YearSteam Reduction = 490 t-CO2 / 1Year

CO2 Reduction494 t-CO2/ 1Year

Control loops Stable valve controls

Expected effect - TAF


Plant -2 -Rayong Olefins Co., Ltd. (ROC)&

Thai Acrylic Fibre Co., Ltd. (TAF)-


Summary

ROC

Cooling water pump etc

Targets

Inverter type speed control for motors in

pumps especially with medium voltage

motors

Effective countermeasures

TAF

Water pump for chiller etc


Survey Process （Detail）Valve Control vs Speed control

Pu

mp

H

ea

d ;

H

Pump Flow ; QQ1

H1

Flow loss Curve

R = Q2

H = A-(A-1)Q2

REQUIRED MOTOR

POWER

A

0.7x Q1

Pu

mp

H

ea

d ;

H

Pump Flow ; QQ1

H1

Flow loss Curve

R = Q2

H = A-(A-1)Q2

REQUIRED MOTORPOWER

A

0.7x Q1

Valve Control Speed Control


Target item at ROC

Item No. : PM-2400C

Equipment : Cooling water pump

Motor rating : 10P-1850kW-6600V-50Hz-F eG3

6.6kV-2600kVA TMdrive-MVG is applicable.

(*The existing eG3 motor shall be replaced

with a new explosion-proof motor

in order to get variable speed motor

explosion-proof certificate.)


Expected effect

Electric Power Reduction = 7,266,000KWh / 1Year

CO2 Reduction4,032 t-CO2 / 1Year

ROC

Electric Power Reduction = 1,204,000KWh / 1Year

TAF

CO2 Reduction668 t-CO2 / 1Year


Asia Green IT Seminar

February 25, 2010The Westin Grande Sukhumvit Hotel170 persons

February 23, 2010Pan Pacific hotel Singapore160 persons

Greeting: Ms. Teo Lay Lim,Chairman of Green IT Chapter, SiTF

Singapore Date：February 23, 2010 Bangkok Date：February 25, 2010

SpeakerMETIIDAYokogawa Electric Corp・TMEICNTT Data Intellilink Corp・Panasonic CorpNTT Data Corp

SpeakerMETIMinistry of Industry (Thailand)Yokogawa Electric Corp・TMEICNTT Data Intellilink Corp・Panasonic CorpYokogawa Manufacturing Corp

Asia Green IT Seminar

Greeting: Mr. Yuji Kumamaru, Minister extraordinary and plenipotentiary

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