stulz mission energy

STULZ IT Cooling Solutions and Services 11

Mission Energy:

Energy Efficient Cooling

Developing CAPEX efficient free cooling strategies and evaluating their

impact on OPEX and TCO


The tasks of cooling a data centreWhat is a direct and an indirect free cooling system?

TCO calculations for your investment in the futureThe air conditioning systems of the futureSTULZ – your partner for coolnig solutions

The new dimension of free cooling !


The tasks of cooling a data centre



Goals today: Cold aisle – hot aisle concept, but…

seperate the cold and the hot air


…„straight rows of racks are mixing with „other“ IT equipment


The target of the air conditioning: cold air in front of the 19” level

and a clear horizontal air path through the rack

Source: INTEL Source: HP


Energy flow through the Data CentrePower Usage Efficiency Finally all leaves as Waste Heat

Source: The Green Grid


FREE COOLING Room conditions

Ambient air

Raised floor height

Water temperatures

Part load behaviour

Coil dimensioning

Filter surface

Fan technology

Unit sizing

Refrigerant

Pipework dimensions

Pump technology

Unit options

parameters

Filter condition

Amount of refrigerant

Air path

Some criteria that have an influence on the energy efficiancy of your data centre

Stand-by concept

setpoints

Sensor adjustment


What is a direct and an indirect free cooling system?



…free cooling is not a new technology- at least not in this region!

Indirect free coolingindirect: water/glycol will be used as a medium between the inside and outside

Direct free coolingdirecf: a huge part of the ambient air will be deliveredinside the data centre

Cooling the room without compressor operation: FREE COOLING

Free cooling for IT-rooms


Indirect free coolingindirect: water/glycol will be used as a medium between the inside and outside

Direct free coolingdirecf: a huge part of the ambient air will be deliveredinside the data centre

Cooling the room without compressor operation: FREE COOLING

Free cooling for IT-rooms

⇒ pedal conneted to the back wheel with a chain will be used for the transmission of force ⇒ pedal directly

at the wheel


Function of the indirect free cooling system


Indirect free coolingCRAC units with integrated free cooling function

Room air will be seperated from the ambient air by a water/glycol system


Indirect free coolingchillers with integrsted free cooling function

Room air will be seperated from the ambient air by a water/glycol system


TCO calculations for your investment in the future



System without freecooling vs. System with free cooling

TCO calculation for future investments


CAPEX+32%

OPEX-56%PER

YEAR

Example1: Traditional Air cooled vs. Stulz DFC


Example1: Traditional Air-cooled vs. Stulz DFC

€ 220.000.-Cost reduction


Example1: Traditional Air-cooled vs. Stulz DFC


Example 2: Chilled Water vs. DFC (300kW)

CAPEX:+70%

OPEX:-60%

10 yearSavings=€570.000


Example 2 : Chilled Water vs. DFC (300kW)


Energy use

DX

Com

pressoroperation

FCFree cooling

EFCExtendedFree cooling

MIX

Com

pressor andFree cooling

Indoor

OutdoorC

ontrol

data

Dynamic Free Cooling,Control of all componentsIn the system to assure The minimum powerconsumption

Further potential of saving energy with an indirect free cooling system

variable control of all components Stand-by management Maximum energy eficiancy approx. 30% energy saving againstOther free cooling systems


The air conditioning systems of the future



NEW CONCEPTS: STULZ Direct Free Coolung!

ASHRAE TC 9.9 - 2004

ASHRAE TC 9.9 - 2008

Different requirements allow for new concepts!

or

Tight tolerances will still require Indirect free cooling systems!


NEW CONCEPTS: STULZ Direct Free Cooling!

Ber

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Bre

mer

have

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Ess

en

Fra

nkfu

rt

Ham

burg

Man

nhei

m

Mün

chen

Nür

nber

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% Anteil 87,6 94,1 91,2 86,8 92,6 85,7 90,0 88,9 90,7

Stunden 7.672 8.239 7.992 7.601 8.111 7.508 7.883 7.787 7.942

Stunden = Jahrestemperaturstunden bis einschließlich 18°C

WETTERDATEN

Mittlere jährliche Stundenanzahl, gemäß DIN 4710 Januar 2003

% Anteil = Prozentualer Anteil der Jahrestemperaturstunden bis einschließlich 18°C

In Germany for example more the 85% of the time the temperatures are ≤ 18°CHere the results will be even BETTER!!!!


NEW CONCEPTS: STULZ Direct Free Cooling with optimised coil placement


NEW CONCEPTS: STULZ Direct Free Cooling!

Advantages:

High energy efficiancy by using direct free cooling technology –no losses by additional heat exchangers

High scalibility of the system „Build as you grow!“ –no hydraulics (pipework, pumps, valves) at day 1 needed for the final stage

Lower CAPEX compared with indirect free cooling systems

Lower OPEX (energy consumption) the on all other systems


NEW CONCEPTS: STULZ Direct Free Cooling!Conditions:

Accepted room humidity level at approx. 20%- 80% r.H.

Ambient conditions need to be observed (dust) while selecting the site (not close to highways, harvest or in the city centres)

Acceptance of possible ourside influences(e. g. smoke, gas, etc.)

Compromising the building safety

Structural conditions:

Free in the construction of the building

short distances of the air intake and extract (pressure losses)

Air intake on the shadow side of the building


STULZ – your partner for coolnig solutions



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


Find STULZ ...

Italy

Germany

China

USA

Headquarter

… and its qualified and professional partners –worldwide.

Production Sites

India

Germany


STULZ Group of Companies

A/C Technology Plastics Technology

Plastics Technology € ≥ 400 MioA/C Technology € ≥ 300 Mio

Total € ≥ 700 Mio

EmployeesPlastics Technology ≥ 2.400A/C Technology ≥ 1.600Total ≥ 4.000

Manufacturer and Distributor of Air Conditioning Products, SystemsEngineering, Service and Object Management.

STULZ GmbH, Germany (P)STULZ Pty Ltd., AustraliaSTULZ-ATS (Shanghai), China (P)STULZ France S.A.R.L., FranceSTULZ UK Ltd., Great BritainSTULZ CHSPL Pvt. Ltd., India (P)STULZ SpA, Italy (P)STULZ Groep B.V., NetherlandsSTULZ Ltd., New ZealandSTULZ Polska Sp. z o.o., PolandSTULZ España S.A., SpainSTULZ-ATS Inc., USA (P)Stulz South Africa Pty. Ltd. (P): Production Site

Development and Production of Technical Plastic Components for automotive industry.

Montaplast GmbH, Germany

Montaplast of North America, Inc.,USAMontaplast (SIP) Co.,Ltd., China


STULZ PRODUCTS – Reliable just everywherePrecision air conditioning for small telecom and IT applications Rechenzentrum

Chillers for precision air conditioning units and water-cooled racks

Chillers from 5kW – 1,5MW

Precision A/C units from 4kW – 200kW

Telecom air conditioners from 200W– 20kW


STULZ PRODUCTS – innovative and efficiant !

Introduction of the energy efficiant EC fan technology as STANDARD for all CyberAir units already in 2004 – today as option seen on nearly all other manufacturers

STULZ System Cost Calculation tool is delivering world-wide TCO calculations for operators all around the world since 2006

STULZ Stand-by Management as an integrated control function on all CW- units was introduced 2006 to save energy

Improvement of the indirect free cooling system by Stulz with the introduction of the Dynamic Free Cooling in May 2007

Optimisation / extension of the chilled water range in November 2008 CyberAir CWund CWE – Target: Max. energy efficiancy

New STULZ concepts for direct free cooling


Stulz GmbHThomas SteinbergHolsteiner Chaussee 28322457 Hamburg, Germany

Thank you..

Ph: +49 – 40 – 5585 526 Email: [email protected] Web: www.stulz.com

http://www.stulz.com/�

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