Post on 12-Jan-2016
1Stulz Mission Energy – Increasing Performance & Reducing Operating CostsStulz Mission Energy – Increasing Performance & Reducing Operating Costs
Mission Energy:
Energy Efficient Cooling
How Data Centre energy consumption and operating costs can be
significantly reduced through readily available cooling techniques
Moscow, 15 September 2009
Thomas Steinberg, Stulz GmbH, Germany
2Stulz Mission Energy – Increasing Performance & Reducing Operating CostsStulz Mission Energy – Increasing Performance & Reducing Operating Costs
STULZ International Production Sites
STULZ Air Technology Systems,Frederick/MD, USA
STULZ S.p.A.Valeggio sul Mincio(VR),Italy
STULZ GmbHHamburg, Germany
STULZAir Technology Systems(Shanghai), China
STULZ CHSPL (India) Pvt. Ltd., India
3Stulz Mission Energy – Increasing Performance & Reducing Operating CostsStulz Mission Energy – Increasing Performance & Reducing Operating Costs
Find STULZ ...
Italy
Germany
China
USA
Headquarter
… and its qualified and professional partners – worldwide.
Production Sites
India
Germany
4Stulz Mission Energy – Increasing Performance & Reducing Operating CostsStulz Mission Energy – Increasing Performance & Reducing Operating Costs
TOPICS
Why Energy Efficient Precision Air Conditioning?
Why use Free Cooling?
Room Design for Optimal Energy Efficient Operation
Typical Cooling Methods
Dynamic Free Cooling®
5Stulz Mission Energy – Increasing Performance & Reducing Operating CostsStulz Mission Energy – Increasing Performance & Reducing Operating Costs
Why Energy Efficient Precision Air Conditioning?
6Stulz Mission Energy – Increasing Performance & Reducing Operating CostsStulz Mission Energy – Increasing Performance & Reducing Operating Costs
The Need for Energy Efficient Data CentresThe Australian, 17 June 2008
“It is estimated servers and data centres consumed about61 billion kWh in 2006”
“If the status quo continues, by 2011, data centres will consume 100 billion kWh of energy”
“Data centres’ power and cooling infrastructure accounted for about half of the electricity consumption”
“The use of economisers that take advantage of nature to help cool data centres is gaining traction in the US”
“Data centre operator Equinix, says it saves up to 80% in annual cooling costs by using economisers in 8 of its 19 US facilities”
7Stulz Mission Energy – Increasing Performance & Reducing Operating CostsStulz Mission Energy – Increasing Performance & Reducing Operating Costs
Energy flow through the Data CentrePower Usage Efficiency Finally all leaves as Waste Heat
Source: The Green Grid
8Stulz Mission Energy – Increasing Performance & Reducing Operating CostsStulz Mission Energy – Increasing Performance & Reducing Operating Costs
Energy efficient systemEnergy efficient system
with Low operating costwith Low operating cost
or
Low capital cost system Low capital cost system
but with High operating costsbut with High operating costs
CAPEX v OPEX ..…keep in mind:
Your data centre uses energy all year round
Strategic Choice for a Data Centre
9Stulz Mission Energy – Increasing Performance & Reducing Operating CostsStulz Mission Energy – Increasing Performance & Reducing Operating Costs
…so: Why energy efficient cooling?
YOU HAVE THE CHOICE:
•Save operating costs throughout the data centre's lifetime
•Get more IT capacity out of your data centre at a given available power by reducing the power used by secondary physical infrastructure
10Stulz Mission Energy – Increasing Performance & Reducing Operating CostsStulz Mission Energy – Increasing Performance & Reducing Operating Costs
What is Free Cooling?
“The ability to remove heat from a space without the use of a refrigeration process”
11Stulz Mission Energy – Increasing Performance & Reducing Operating CostsStulz Mission Energy – Increasing Performance & Reducing Operating Costs
Why use Free Cooling?
12Stulz Mission Energy – Increasing Performance & Reducing Operating CostsStulz Mission Energy – Increasing Performance & Reducing Operating Costs
Energysaving by reducting fan power consumption
nos. CRACs operation hr. Kosten 1 year 2 years 5 years 10 years 15 yearsn h €/kwh
1 8760 0,13 1.138,80 2.277,60 5.694,00 11.388,00 17.082,00
5 8760 0,13 5.694,00 11.388,00 28.470,00 56.940,00 85.410,00
10 8760 0,13 11.388,00 22.776,00 56.940,00 113.880,00 170.820,00
50 8760 0,13 56.940,00 113.880,00 284.700,00 569.400,00 854.100,00
100 8760 0,13 113.880,00 227.760,00 569.400,00 1.138.800,00 1.708.200,00
Operation cost reduction by reducing fan power consumption 1kW per CRAC
Energy cost = constant 0,13 € / kWh for the next 15 years (?)
nos. CRACs Operation hr. Cost 1 year 2 years 5 years 10 years 15 yearsn h €/kwh
1 8760 0,13 1.138,80 2.363,01 6.614,60 16.110,70 29.743,59
5 8760 0,13 5.694,00 11.815,05 33.072,98 80.553,52 148.717,97
10 8760 0,13 11.388,00 23.630,10 66.145,96 161.107,03 297.435,94
50 8760 0,13 56.940,00 118.150,50 330.729,78 805.535,16 1.487.179,69
100 8760 0,13 113.880,00 236.301,00 661.459,57 1.611.070,32 2.974.359,37
Operation cost reduction by rduction fan power consumption 1kW per CRAC
Energy cost increase by 7,5% p.a.
13Stulz Mission Energy – Increasing Performance & Reducing Operating CostsStulz Mission Energy – Increasing Performance & Reducing Operating Costs
Typical CRAC Unit Energy Consumption
14Stulz Mission Energy – Increasing Performance & Reducing Operating CostsStulz Mission Energy – Increasing Performance & Reducing Operating Costs
Typical CRAC Unit Energy Consumption
FREE-COOLING
15Stulz Mission Energy – Increasing Performance & Reducing Operating CostsStulz Mission Energy – Increasing Performance & Reducing Operating Costs
Typical CRAC Unit Energy Consumption
The Key Question is:
Can we achieve the required room conditions without compressor cooling?
16Stulz Mission Energy – Increasing Performance & Reducing Operating CostsStulz Mission Energy – Increasing Performance & Reducing Operating Costs
Room Design for Energy Efficient Operation
17Stulz Mission Energy – Increasing Performance & Reducing Operating CostsStulz Mission Energy – Increasing Performance & Reducing Operating Costs
Room Efficiency
Best Room Efficiency will be reached, if 100% of the cold air leaving the CRAC unit, passing through the data centre and returning to the top of the CRAC unit is entirely used to remove heat from the IT equipment.
This means: No air leakage, no bypass air, no blockages & no misdirected air.
18Stulz Mission Energy – Increasing Performance & Reducing Operating CostsStulz Mission Energy – Increasing Performance & Reducing Operating Costs
Many possibilities to optimise the room -
The basics for an efficiant operation
19Stulz Mission Energy – Increasing Performance & Reducing Operating CostsStulz Mission Energy – Increasing Performance & Reducing Operating Costs
Typical Data Centre Cooling Systems
1. Traditional Air-Cooled or Water-Cooled DX
2. Chilled Water: with Free Cooling chillers
3. Traditional Glycol Free Cooling
4. Free Cooling: with Dynamic Free Cooling Dynamic Free Cooling
20Stulz Mission Energy – Increasing Performance & Reducing Operating CostsStulz Mission Energy – Increasing Performance & Reducing Operating Costs
Traditional DX Systems
G Type – Water/glycol cooled DX
A Type – Air-cooled DX
Some energy saving possible through EC fans
21Stulz Mission Energy – Increasing Performance & Reducing Operating CostsStulz Mission Energy – Increasing Performance & Reducing Operating Costs
The air needs to be “moved” 8760 hours per yearTherefore “state of the art” technology is essential : The EC FanThe EC Fan
1.200
1.300
1.400
1.500
1.600
1.700
1.800
1.900
2.000
2.100
2.200
Ene
rgy
cost
s [E
uro/
Yea
r]
Centrifugal Plug fan STULZ EC fan
Energy cost savings with EC fan compared to ordinary fans
Annual energy costs fan only [8.500m³/h at 350Pa]
-30%
-20%-10%
22Stulz Mission Energy – Increasing Performance & Reducing Operating CostsStulz Mission Energy – Increasing Performance & Reducing Operating Costs
EC fan and Part Load Behavior
0%10%20%30%40%50%60%70%80%90%
100%
Airflow Absorbed Power0%
10%20%30%40%50%60%70%80%90%
100%
Airflow Absorbed Power
1/2 Airflow
1/8 Absorbed
Power
23Stulz Mission Energy – Increasing Performance & Reducing Operating CostsStulz Mission Energy – Increasing Performance & Reducing Operating Costs
Chilled Water: with Free Cooling chillers
Large energy savings through EC Fans and
CW standby management CW Type – Single coil
CW Type – Dual Coil
24Stulz Mission Energy – Increasing Performance & Reducing Operating CostsStulz Mission Energy – Increasing Performance & Reducing Operating Costs
Stand-by Management (with EC fans)Sample:
3x ASD1500CW
At 24°C/50%
with 7/12°C water
incl.
1/3 standby capacity
Standby
3x 75,1 = 225,3 kW net sensible
Airflow: 2x 29.000 m³/hFan absorbed power: 2x 8,0 = 16,0 kWLpa,2m = 2x 59,7dBA = 62,7dBA Airflow: 3x 19.000 m³/hFan absorbed power: 3x 2,3 = 6,9 kWLpa,2m = 3x 50,8dBA = 55,6dBA
=> Energy savings: 9,1 kW x 8760h x 0,13 = 10.363 €/year @ 0,13 €/kWh
2x 112,1 =224,2 kW net sensible
=> Noise reduction: -7,1 dBA
Benefits:
+ Considerable energy savings
+ Reduced noise levels
25Stulz Mission Energy – Increasing Performance & Reducing Operating CostsStulz Mission Energy – Increasing Performance & Reducing Operating Costs
‘GE’ Glycol Free Cooling
Significant energy savings in low ambient temperatures through a secondary free cooling coil. GE Type – Water-cooled DX
+ Free Cooling
26Stulz Mission Energy – Increasing Performance & Reducing Operating CostsStulz Mission Energy – Increasing Performance & Reducing Operating Costs
27Stulz Mission Energy – Increasing Performance & Reducing Operating CostsStulz Mission Energy – Increasing Performance & Reducing Operating Costs
Energy Consumption
Dynamic Free Cooling® Control System
Automatic adaptive control of the most energy efficient mode of cooling
FC
Fre
e C
oo
ling
MIX
mo
de
Co
mp
res
so
r &
Fre
e C
oo
ling
EF
CE
xte
nd
ed
F
ree
Co
olin
g
DX
Co
mp
res
so
r Co
olin
g
28Stulz Mission Energy – Increasing Performance & Reducing Operating CostsStulz Mission Energy – Increasing Performance & Reducing Operating Costs
Stulz Dynamic Free Cooling®
C7000 CONTROL SYSTEM
ModularModularAutomaticAutomatic
ScalableScalable“18-2400kW”“18-2400kW” Space Space
EfficientEfficientIntegratedIntegrated
Turnkey Turnkey SolutionSolution
AdaptiveAdaptive
29Stulz Mission Energy – Increasing Performance & Reducing Operating CostsStulz Mission Energy – Increasing Performance & Reducing Operating Costs
Key Element – Indirect Free Cooling System
IndirectFree Cooling
System
Direct vs. Indirect Free Cooling? Direct free Cooling means cooling the
room/equipment directly with outside air.Direct Free Cooling is common practice in low capacity telecom shelter applications with reduced requirement on temperature
and humidity. Indirect Free Cooling means using cold
outside air for cooling water by using dry cooler to a level where it can be used for
room cooling with chilled water cooling coils in the CRAC units.
Benefits:+ Independent to Outside Air Quality
+ Independent to Outside Air Humidity+ Less Maintenance
30Stulz Mission Energy – Increasing Performance & Reducing Operating CostsStulz Mission Energy – Increasing Performance & Reducing Operating Costs
Key Element – Dynamic Component Control
Dynamic Component Control means:
CRAC controller C7000 controls all active components as there are Dry cooler fans, central pump, unit fans, compressor, free
cooling valve, head pressure control valve depending on outdoor temperature and room load status to minimise overall
power consumption.
Benefits:+ Minimised overall power consumption
+ Highest possible system efficiency+ Save €$€$ €$€$ €$€$ €$€$
Dynamic Component
Control
31Stulz Mission Energy – Increasing Performance & Reducing Operating CostsStulz Mission Energy – Increasing Performance & Reducing Operating Costs
Key Element – Free Cooling Standby Management
Free Cooling Standby Management means:
During Free Cooling Mode all units are in operation sharing the total required
airflow to all units incl. standby unit. This results in results in reduced fan absorbed power for the same total airflow thanks to the CUBE LAW. In case of any unit fault
remaining units ramp up fan speed to ensure total airflow.
Benefits:+ Energy Saving On Unit Fans
+ Improved Supply Air Distribution+ Reduced Noise Level
Free Cooling Standby
Management
100% 100%
66% 66% 66%
CUBE LAW P2=P1x(n2/n1)^3
OFF
32Stulz Mission Energy – Increasing Performance & Reducing Operating CostsStulz Mission Energy – Increasing Performance & Reducing Operating Costs
Key Element – Dynamic Water Temperature
Dynamic Water Temperature means:
Traditional indirect free cooling systems operate with a fixed water temperature set point for free cooling, even if it not necessary due to room part load. The
variable water temperature, always at the highest possible value to ensure required
capacity, leads to increased number of hours in free cooling mode.
Benefits:+ Dynamic adaptation of free cooling mode
on room part load status+ Reduced total absorbed power
DynamicWater
Temperature
Load:80%
Load:100%
10°C
13°CShanghai:+3°C water temp. means44 days morefree cooling
33Stulz Mission Energy – Increasing Performance & Reducing Operating CostsStulz Mission Energy – Increasing Performance & Reducing Operating Costs
Key Element – Dynamic Water Temperature
Full Load
80% Load
60% Load
40% Load
500
400
300
200
Load Status Load(kW)
10,4
13,1
15,8
18,4
Required water
temp. °C*
7
11
14
17
Reached at outdoorTemp °C*
23%
35%
45%
54%
FC&EFC hours (% of year)**
* these values depend on the system selection only** these values depend on the local weather profile. This example refers to Shanghai.
34Stulz Mission Energy – Increasing Performance & Reducing Operating CostsStulz Mission Energy – Increasing Performance & Reducing Operating Costs
Regions for Free Cooling
35Stulz Mission Energy – Increasing Performance & Reducing Operating CostsStulz Mission Energy – Increasing Performance & Reducing Operating Costs
Moscow
0%
5%
10%
15%
20%
25%
30%
35%
40%
45%
50%
55%
60%
65%
70%
75%
80%
85%
90%
95%
100%
40
°C
38
°C
36
°C
34
°C
32
°C
30
°C
28
°C
26
°C
24
°C
22
°C
20
°C
18
°C
16
°C
14
°C
12
°C
10
°C
8 °
C
6 °
C
4 °
C
2 °
C
0 °
C
-2 °
C-4-6-8
-10
Outdoor Temperature
% o
f h
ou
rs p
er
ye
ar
be
low
x°C
The Location – Influence of the weather profile
CompressorMIX & Free Cooling
36Stulz Mission Energy – Increasing Performance & Reducing Operating CostsStulz Mission Energy – Increasing Performance & Reducing Operating Costs
Examples
37Stulz Mission Energy – Increasing Performance & Reducing Operating CostsStulz Mission Energy – Increasing Performance & Reducing Operating Costs
CAPEX
+32%
OPEX
-56%
PER YEAR
Example1: Traditional Air cooled vs. Stulz DFC
38Stulz Mission Energy – Increasing Performance & Reducing Operating CostsStulz Mission Energy – Increasing Performance & Reducing Operating Costs
Example1: Traditional Air-cooled vs. Stulz DFC
€ 220.000.-Cost reduction
39Stulz Mission Energy – Increasing Performance & Reducing Operating CostsStulz Mission Energy – Increasing Performance & Reducing Operating Costs
Example1: Traditional Air-cooled vs. Stulz DFC
40Stulz Mission Energy – Increasing Performance & Reducing Operating CostsStulz Mission Energy – Increasing Performance & Reducing Operating Costs
Example 2: Chilled Water vs. DFC (300kW)
CAPEX:+70%
OPEX:-60%
10 yearSavings=€570.000
41Stulz Mission Energy – Increasing Performance & Reducing Operating CostsStulz Mission Energy – Increasing Performance & Reducing Operating Costs
Example 2 : Chilled Water vs. DFC (300kW)
42Stulz Mission Energy – Increasing Performance & Reducing Operating CostsStulz Mission Energy – Increasing Performance & Reducing Operating Costs
Comparison of Systems
• ENERGY CONSUMPTION: Traditional DX units
100%
• ENERGY CONSUMPTION: Free Cooling Chiller Solution
70%
• ENERGY CONSUMPTION: STULZ Dynamic Free Cooling
40%
43Stulz Mission Energy – Increasing Performance & Reducing Operating CostsStulz Mission Energy – Increasing Performance & Reducing Operating Costs
Summary
• Eliminating compressor operation is a significant factor in reducing data centre operating costs
• Optimizing the air path within a data centre greatly increases the efficiency of the cooling
• Only ‘indirect free cooling’ systems truly satisfy the environmental control requirements of a data centre
• Stulz’s Dynamic Free Cooling® is the only truly ‘off the shelf’ technology to optimize every aspect of the cooling cycle for minimum energy consumption
44Stulz Mission Energy – Increasing Performance & Reducing Operating CostsStulz Mission Energy – Increasing Performance & Reducing Operating Costs
Stulz GmbHThomas SteinbergHolsteiner Chaussee 28322457 Hamburg, Germany
Thank you..
Ph: +49 – 40 – 5585 337 Email: steinberg@stulz.de Web:
www.stulz.com