Highly efficient Data center support by the review of theHighly efficient Data center support by the review of theHighly efficient Data center support by the review of the Highly efficient Data center support by the review of the improvement in airimprovement in air--flow control and the feeding methodflow control and the feeding method
-- A case of a data center in Singapore A case of a data center in Singapore --
February 21, 2011February 21, 2011y ,y ,
NTT DATA INTELLILINK CORPORATIONNTT DATA INTELLILINK CORPORATIONTAKASAGO THERMAL ENGINEERING Co. Ltd
Table of Contents
1 Background and Objective
Table of Contents
1.Background and Objective2.Introduction of the Survey/Surveyed
CCompanies3.Survey Process4.Results
・Current Status and issuesCurrent Status and issues on Energy Efficiency
・Energy saving plan and its effect・Energy-saving plan and its effect5.Suggestions
All Rights Reserved, Copyright © GIPC 2011
BackgroundBackground
APEC Yokohama JAPAN (Nov. 2010)Illustrative List of Possible APEC Actions to Support the APEC Leaders’Growth Strategy
P t ti ti iti th h th i t d ti f・Promote energy conservation activities through the introduction of more energy efficient ICT devices and systems, including data centers and ICT utilization in many sectors and new ICT services such as cloud computing (Green ICT).
Recently, the situation at the data center has changed greatly.•Support for environmental protection• Initiatives on Green ICT•Correspondence to ICT technology with fast advancement•Correspondence to ICT technology with fast advancement.
To achieve the Green data center.•High Voltage Direct Current ( HVDC )g g ( )•Air-conditioning efficiency improvement•Server consolidation by virtualization.
All Rights Reserved, Copyright © GIPC 2011
ObjectiveObjective
Energy issues in ASEAN countries are critical factors to disturb our economic growth. That is why interest of energy-saving is getting increase.
Under such situation, “Green IT” expects to be one of the solutions to save energy consumption.
This survey aims to introduce Japanese energy saving technologies and to t ib t ti i th i ASEAN t i b d thcontribute supporting economic growth in ASEAN countries, based on the survey
results in data center of Singapore.
All Rights Reserved, Copyright © GIPC 2011
Introduction of Survey Company
NTT DATA INTELLILINK CORPORATIONGreen Consulting Business Unit
Introduction of Survey Company
Green Consulting Business Unit
Provides a wide consulting to supporting an environmental response of the companies from both sides of the data center facility and ICT. p yPast, with a track record of 680,000 m2 data center research and analysis.NTT Data Corporation 100% investment.
*NTT Data Corporation is a system integration and IT consulting company of NTT Group*NTT Data Corporation is a system integration and IT consulting company of NTT Group. NTT data which has now become the largest of the IT Services companies headquartered in Japan.
Takasago Thermal Engineering Co LtdTakasago Thermal Engineering Co., Ltd.Founded in 1923, Takasago Thermal Engineering Co., Ltd. is Japan's largest company specializing in Heating, Ventilation and Air Conditioning (HVAC). ( )
largest company specializing in Heating, Ventilation and Air Conditioning (HVAC).
All Rights Reserved, Copyright © GIPC 2011
Survey Process (Summary)Survey Process (Summary)Schedule : From October 2010 to December 2010.
Surveyed Company : A certain company server room (8000 sqf)Surveyed Company : A certain company server room (8000 sqf)
Survey Item : [PUE Survey], [DPPE Survey] ,[Thermal Environment Survey] and [CFD Analysis]
Proposal
Nov 2010 ~ Dec 2010
AnalysisField Survey
スケジュール Oct 2010Date Nov. 2010 ~ Dec. 2010Oct. 2010
• Calculation of PUE ,(DPPE)d ff l l f
•Monitoring of power consumption – Review and effect calculation of
feeding method. consumption
S f th th lAction
•Analysis of air flow.– Aisle capping effect simulation by
CFD analysis
•Survey of the thermal environment
Action
All Rights Reserved, Copyright © GIPC 2011
CFD analysis.
Energy-saving Plan and Its Effect (Summary)Energy saving Plan and Its Effect (Summary)
In order to improve PUE value, it is recommend that the followings shall be implemented.Issues CountermeasuresIssues Countermeasures
1. Installation of Cold Aisle Capping upper/side areas of server racks.
1. Hot air recirculation was happened from hot aisle area to cold aisle area i k
2. AHU to change the control method from the return air temperature to
in server racks.
2. AHU supply air temperature of increase from the return air temperature to
supply air temperature
3. Chilled water temperature changes
increase
3. Further improvement of the chiller machine COP
4. Review of UPS room air-conditioning machine running number and inverter i t d ti
ac e CO
4. UPS room, cooling load is low
introduction
5. Review of the power supply 5. Power supply system conversion
All Rights Reserved, Copyright © GIPC 2011
p pp ysystem
pp y ylosses
Current Status and issues of Energy Efficiency (Summary)(Summary)
Item Current Status and issues of Energy Efficiency
1. Air-conditioning of server room
1. Hot air recirculation was happened from hot aisle area to cold aisle area in server racks.
2. Air-conditioning of server room
2. Cooling air from the cold aisle has been returned into the AHU.
3. Power supply system 3. Conversion losses.
All Rights Reserved, Copyright © GIPC 2011
Ai diti i fAir-conditioning of server room(Thermal Environment Survey)
1. Hot air recirculation was happened from hot aisle area to cold aisle area in ser er racksarea in server racks.
2 Cooling air from the cold aisle has been returned into the AHU2. Cooling air from the cold aisle has been returned into the AHU.
All Rights Reserved, Copyright © GIPC 2011
Current Status and issues of Energy Efficiency (Details)①(Details)①
Thermal environment measurementRack surface suction temperature measurement. In addition Measure while moving air flow, and temperature of cold aisle, and hot aisle.
cold aisle hot aisle cold aisle
Server racks
Temporary sheet
Thermo camera
All Rights Reserved, Copyright © GIPC 2011
Current Status and issues of Energy Efficiency (Details)①(Details)①
Situation of cold aisle
All Rights Reserved, Copyright © GIPC 2011
Current Status and issues of Energy Efficiency (Details)①(Details)①
All Rights Reserved, Copyright © GIPC 2011
Current Status and issues of Energy Efficiency (Details)①(Details)①
hot aisle
Hot aisle has leaked cold air from the cold aisleHot aisle has leaked cold air from the cold aisle,
no blank panel set up the rack space.
Cold air leaked out returns to AHU intact.
All Rights Reserved, Copyright © GIPC 2011
Current Status and issues of Energy Efficiency (Details)①(Details)①
All Rights Reserved, Copyright © GIPC 2011 14
Current Status and issues of Energy Efficiency (Details)①(Details)①
Hot air is returned. Cold air is inhaled.
•These symptoms are not phenomena peculiar to the surveyed server room.
These solutions offering Cold Aisle Capping.
All Rights Reserved, Copyright © GIPC 2011
Energy-saving Plan and Its Effect (Details) ①Energy saving Plan and Its Effect (Details) ①
Aisle Capping:•build roofs and doors of server lacks as onebuild roofs and doors of server lacks as one.•physically isolate chilled air and exhaust air from IT equipment.•high airtightness made it possible to control optimal air volume of
conditioner that is necessary for servers.
Aisle Capping. made by NTT FACILITIES.An example of temperature / air flow simulation
With aisle capping technique Without aisle capping technique
All Rights Reserved, Copyright © GIPC 2011
Energy-saving Plan and Its Effect (Details) ①Energy saving Plan and Its Effect (Details) ①
Before the Cold Aisle Capping
Result of temporary Cold Aisle Cappingpp g
After the Cold Aisle Capping
In the effect of the capping, the cold air has been imprisoned.
After the Cold Aisle Capping
Air flow improvement
All Rights Reserved, Copyright © GIPC 2011
Energy-saving Plan and Its Effect (Details) ①Energy saving Plan and Its Effect (Details) ①
Effect of cold aisle simple Cold Aisle CappingNo capping Use Temporar cappingNo capping Use Temporary capping
Temporary Capping aria. Temporary Capping aria.
Capping is trapped cold air, improved temperature distribution in the Cold aisle. All Rights Reserved, Copyright © GIPC 2011
Energy-saving Plan and Its Effect (Details) ①Energy saving Plan and Its Effect (Details) ①
Simulation of supply air control.Case all racks installed Cold Aisle Capping
All Rights Reserved, Copyright © GIPC 2011
P l tPower supply system(From the results of PUE Survey)
1. Conversion losses.
All Rights Reserved, Copyright © GIPC 2011
Current Status and issues of Energy Efficiency (Details)②(Details)②
Definition of PUE
PUE =Value A : Total facility power in DC
Value B : ICT equipment power in DC
a+b+c+d= a
d
Conversion lossConversion loss
UPSB S/ SS U
Machine Room
ab
UPSB UPS/UPSSB PDU
LightingLighting ICTLightingLightingC
A/C powerA/C power••Heat of ChillerHeat of Chiller
••Power of AHUPower of AHU
••Power of FCUPower of FCU
c A/C powerA/C power••Heat of ChillerHeat of Chiller
••Power of AHUPower of AHU
••Power of PUMPPower of PUMP
b
••Power of PUMPPower of PUMP
All Rights Reserved, Copyright © GIPC 2011
Current Status and issues of Energy Efficiency (Details) ②(Details) ②
d
Conversion lossConversion loss
UPSB S/ SS PDU
MachineRoom
PUE =a+b+c+d
≒ 2 2
A/C powerA/C power••Heat of ChillerHeat of Chiller
ab
c
UPSB UPS/UPSSB PDU
LightingLightingICT
A/C powerA/C power••Heat of ChillerHeat of Chiller
LightingLightingC
b
PUE = a ≒ 2.2
a ( ICT power consumption ) = 1.00b ( A/C power consumption ) = 0.97 Heat of ChillerHeat of Chiller
••Power of AHUPower of AHU
••Power of FCUPower of FCU
••Power of PUMPPower of PUMP
Heat of ChillerHeat of Chiller
••Power of AHUPower of AHU
••Power of PUMPPower of PUMP
( p p )c ( Lighting power consumption) = 0.04d ( Power Losses ) = 0.23
PUE = 2.2 ( Value of general data center. )
The ratio of the electric power loss is 23% against the power consumption of the ICT equipment The ratio of the electric power loss is 23% against the power consumption of the ICT equipment.•Situation
1. The I/O conversion efficiency of the UPS equipment is 56% on the average.2. ICT load of server room is the UPS total capacity of about 5%. UPS equipment is
very inefficient load pointsvery inefficient load points.3. These are general phenomena of the UPS device.
All Rights Reserved, Copyright © GIPC 2011
I propose the method of decreasing the Conversion loss furtherI propose the method of decreasing the Conversion loss further.
HVDC(Hi h V lt Di t C t )(High Voltage Direct Current )
All Rights Reserved, Copyright © GIPC 2011
Energy-saving Plan and Its Effect (Details) ②Energy saving Plan and Its Effect (Details) ②
HVDC is the abbreviation of “ High Voltage Direct Current ” .Apply the HVDC
A
Data Center power equipment for an effective solution.High voltage power supply will improve capital efficiency to approximately 90 percent. This reduces power loss to the extreme.
ACDCAC
S/B
CVCF(無停電電源装置) ICT Device
DCAC CPU
AC pow
er sup
UPS ICT
AC DC12V
pply system
Power
ACin
DC
p ICTHVDC
HVDC PS Rack ICT Device
Power Savings 20~35%
AC
DC
CPU
power supply
system DCAC DC
ICTHVDC
DC340V DC12V
ACin
All Rights Reserved, Copyright © GIPC 2011
Conversion of two minutes is eliminated. Become a significant energy saving. Further improve the reliability.
y
Energy-saving Plan and Its Effect (Details) ②Energy saving Plan and Its Effect (Details) ②
Energy saving effect (conversion efficiency comparison)
AC/DC
Server RackPDU (AC)UPS system (current)75~85%98% 80~85% 98.5%
ACACServer
UPSTransformer S/B ACAC~
42~30 % Loss
PDU (DC)HVDC Server Rack
DCdc
DC/DCCentralized power.
PDU (DC)
保証回路
母線安定
HVDC
98%95%
98%
P S Rack DC340VAC
w/oDC12V
~ Transformer
w/o power supply Server9 % Loss
All Rights Reserved, Copyright © GIPC 2011
Energy-saving Plan and Its Effect (Details) ②Energy saving Plan and Its Effect (Details) ②
" "We achieved "Safety" by our new technology , HVDC!
① ARC Deterrence Technology ②The Neutral Earth MethodElectric shock, and earth fault protection
・By setting the arc control circuit, suppress the generation of the arc. ・An electric shock, an earth fault with high voltage are
limited on a secure current value by the high resistivity of
The generation of the arc has been an issue Danger by a high voltage has been
limited on a secure current value by the high resistivity of 47kΩ.
All Rights Reserved, Copyright © GIPC 2011
The generation of the arc has been an issue as interrupting Direct Current.
Danger by a high voltage has been pointed out.
Energy-saving Plan and Its EffectEnergy saving Plan and Its Effect
Item MethodEffect of reduction (year)
Power
(kwh/year)*convert into CO2
(kg‐CO2/year)
**Amount of reduction
(SGD/year)
Renewal /Change of
PowerChange in power supply method
by HVDC. 768,864 385,662 115,330
equipment
A/CProduce an increase in temperature
by Cold Aisle Capping. 270,000 135,432 40,500
Other measures to conserve energy. 258,420 129,623 38,763
Total 1,297,284 650,718 194,593
* 0 5016 kg CO2/kWh(Environment Building 40 Scotts Road #13 00 Singapore 228231 www nea gov sg)
All Rights Reserved, Copyright © GIPC 2011
* 0.5016 kg CO2/kWh(Environment Building 40 Scotts Road #13-00 Singapore 228231 www.nea.gov.sg)
** 0.15 SGD/kwh
SuggestionsSuggestions
• For data center highly efficiency and maintenance• For data center highly efficiency and maintenance.
• Continued management of PUE
• Commissioning
• Readjustment
– The management matched to the equipment scale and the load situation is important.
• Air‐conditioning control
• Air‐conditioning machine (number of operating, highly effective model, air volume control, ・・・)model, air volume control, )
• Minimize the loss of the air conditioner → Aisle Capping
l i• Electric power
• HVDC(High Voltage Direct Current)• Renewable energy
All Rights Reserved, Copyright © GIPC 2011
Suggestions The photovoltaic generation Installation. Suggestions
photovoltaic panel
General method of Japan HVDCphotovoltaic
Power controller
panel
AC ACServer, Router, etc. DC/DCDC/AC
panel
Server, Router, etc.
AC/DC
RectificationAC AC
Con
verte
r 12V340V
AC/DC
12V340V
UPS
Con
verte
r
(AC)
AC/DC DC/AC
UnnecessaryUnnecessary
Unnecessary
(AC)Battery (DC)
The output of the photovoltaic panel is a high voltage,So the HVDC data center is a good combination !
No power controller
HVDC can be used without converting the power of the photovoltaic generation.
Battery
AC DC400V
DC200~400V97%
PriorityHVDC Supply
・No power controllerHighly effective, high reliability, and low price !
・As running out of the photovoltaic generation power, the electric power is automatically supplied from the AC system side.
・HVDC does not flow back to the AC system in waveform troubled!MTTP with control operation
DC/DC Converter
All Rights Reserved, Copyright © GIPC 2011Copyright © 2010 NTT DATA INTELLILINK CORP.
ACincoming
DC400V
Non-priority
DC340VPriority
Contact List
It would be greatly appreciated if it could contribute to the reduction of the use energy in the
Contact List
data centers of your own country about the result of the survey and measures that
were going to be introduced in this announcement.
If h i t t i l f l f t t t t th f ll i ddIf you have interests in our survey, please feel free to contact to the following addresses.
Thank you.Thank you.
Green Consulting Business UnitGreen Consulting Business UnitGreen Consulting Business Division
NTT DATA INTELLILINK CORPORATION
All Rights Reserved, Copyright © GIPC 2011