Upload
others
View
2
Download
0
Embed Size (px)
Citation preview
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
Copyright 2009, Green IT Promotion Council 3
Data Center-Singapore-
NTT DATA Intellilink Corporation
Copyright 2009, Green IT Promotion Council 4
Target
・ Target: A data center in Singapore
・ Surveyed Items
◆PUE Survey : Sector2 , Sector1◆Thermal Environment Survey : Sector2 , Sector1◆CFD Analysis : Sector2
Sector2
Sector1
Data Center Area (Top View)
Copyright 2009, Green IT Promotion Council 5
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
Copyright 2009, Green IT Promotion Council 6
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
Copyright 2009, Green IT Promotion Council 7
Expected effect
Electric Power Reduction = 841,000KWh / 1Year
・CO2 Reduction460 t-CO2 / 1Year
・3.5% improvement on PUE
Sector1 Sector2
Copyright 2009, Green IT Promotion Council 8
Public Facilities-Chulalongkorn University in Thailand-
Panasonic Corporation
Copyright 2009, Green IT Promotion Council 9
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.
Copyright 2009, Green IT Promotion Council 10
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.
Copyright 2009, Green IT Promotion Council 11
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
Copyright 2009, Green IT Promotion Council 12
Plant -1 -Rayong Olefins Co., Ltd. (ROC)&
Thai Acrylic Fibre Co., Ltd. (TAF)-
Yokogawa Electric Corporation
Copyright 2009, Green IT Promotion Council 13
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
Copyright 2009, Green IT Promotion Council 14
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
Copyright 2009, Green IT Promotion Council 15
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
Copyright 2009, Green IT Promotion Council 16
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
Copyright 2009, Green IT Promotion Council 17
Electric Power Reduction = 6,400KWh / 1YearSteam Reduction = 490 t-CO2 / 1Year
CO2 Reduction494 t-CO2/ 1Year
Control loops Stable valve controls
Expected effect - TAF
Copyright 2009, Green IT Promotion Council 18
Plant -2 -Rayong Olefins Co., Ltd. (ROC)&
Thai Acrylic Fibre Co., Ltd. (TAF)-
Copyright 2009, Green IT Promotion Council 19
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
Copyright 2009, Green IT Promotion Council 20
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
Copyright 2009, Green IT Promotion Council 21
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.)
Copyright 2009, Green IT Promotion Council 22
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
Copyright 2009, Green IT Promotion Council 23
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
All Rights Reserved, Copyright GIPC 201024