Presentations text content in Free Air Cooling for Data Centres
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Free Air Cooling for Data Centres
George Salinas, AIA, CDCDP, CDCEP, CDCMPInstructor, CNet Training
©
CNet
Training 2016
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PowerUptime demandsHigher power density usageCoolingCapacityEnergy Consumption (>50%?)NetworkingBandwidthConnectivitySpaceAvailability & operational cost
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Free Air Cooling for Data Centres – Demands and Constraints
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As the power density of cabinets increases, more demands are being placed upon cooling systems
Increasing
Power density
Increasing
Bandwidth
Do we have the right solution?
Free Air Cooling for Data Centres – Data Density Drives Cooling
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What are your operating parameters of the Data Centre and why?
Free Air Cooling for Data Centres – Environmental Conditions
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Heat naturally flows from hot to cold, ‘Helping’ it along with pumps and fans uses energy
Free Air Cooling for Data Centres – Not A Cascade System!
Slide6Free Air Cooling in Data Centres – Historical Beginnings
History
Free cooling in use for over 15 years
Has been limited to certain geographical regionsUse of free air cooling is commonly referred to as “economiser mode”
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Cooling can equate to >50% of the data centre energy costs
Data centres are deploying more IT equipment, increasing temperaturesEnergy prices are risingASHRAE now recommends environmental temperatures up to 270CVendors now recommending temperatures of up to 340CReduces wear and tear on CRAC/CRAH unitsFree air cooling significantly reduces energy and operating costs vs mechanical refrigeration
Free Air Cooling in Data Centres - Why?
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Free Air Cooling in Data Centres – Is It That Simple?
More complex than opening a few doors:
High humidity levels (excess moisture in the air can lead to the erosion of some metals) Dry air can lead to issues like build up of static electricityFiltration is required to remove air particles that can cause problems in the data centreSmoke detection will be required at the air intake
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Free Air Cooling in Data Centres – Available Hours Annually
It is vital to evaluate the amount of usage hours that you will get to accurately establish the Return on Investment (ROI)
Source: The Green Grid
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Free Air Cooling in Data Centres – Operational Concept
Free air cooling introduces external air to the Data Centre
Reduces energy usage for cooling Reduces burden on the cooling system Improves internal air qualityUses filters known as MERVs (Minimum Efficiency Reporting Value) which range from 0-21, industry recommends a 13)
Slide11Free Air Cooling in Data Centres – Air Flow
External air can be introduced when ambient temperature is low enoughCan be mixed with circulating air as requiredCan provide some backup if cooling plant failsLatest research suggests humidity is less of an issueParticulates can be managed by filters
Slide12Free Air Cooling in Data Centres – Configuration Modes
Source: Schneider Electric
Slide13Free Air Cooling in Data Centres - Conclusions
Data centre attitudes to free-air cooling are changing due to increasing energy costs and sustainability policiesStandards such as ASHRAE Standard 90.1-2010, regulations and carbon reduction commitments, are recommending data centres to lower energy useA move to higher operating temperature opens more opportunities to countries not otherwise benefitting
Slide14Free air coolingis a strategic advantage!
Free Air Cooling in Data Centres - Summary
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Thank You
Free Air Cooling in Data Centres
George Salinas, AIA, CDCDP, CDCEP, CDCMP
Instructor, CNet Training
Free Air Cooling for Data Centres
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