Presentation on theme: "Presented by Paul Almond – Datacentre UK"— Presentation transcript:
1 Presented by Paul Almond – Datacentre UK Cooling SolutionsPresented byPaul Almond – Datacentre UK
2 Energy costs are rising The FactsEnergy costs are risingThe cost to power and cool server room equipmentnow exceeds the purchase cost on a 3-year life-cycle, based on a traditional server room / data centre configuration.Fact 1: Power and cooling costs increasingly limit scalability of your data center, and consume an ever-larger share of budget resources.The 3-year energy cost of highly dense servers is roughly equivalent to their acquisition cost.1 Fact 2: Advances in compute density, such as blade servers, have resulted in highly dense servers that require significantly more power and cooling than traditional server configurations.Industry analyst Gartner wrote, “The leading server vendors recognize the problems associated with highly dense hardware and, in particular, with the rapid uptake of high-density blades. As such, they are attempting to develop solutions to deal with those problems.”2Fact 3: The power and associated costs to cool the datacenter can be as much or more than the cost of powering the IT equipment (servers, storage, and networking). A study by HP and The Uptime Institute suggests that in a majority of the world's data centers 63% of a datacenter’s power is associated with the power of cooling the IT equipment. 4While the rest of the industry is narrowly focused on only one aspect of the problem -- reducing the power of chips and other components, HP is also addressing the need to reduce the power requirements and costs associated with cooling the datacenters themselves. Fact 4: Reducing the energy required to cool a datacenter can result in significant cost savings (and reduction in CO2 emissions) or the ability to deploy more IT equipment in the same space -- or a mixture of the two.
4 • Create more efficient rack space Cooling SolutionsThe Aim• Reduce energy usage• Create more efficient rack spaceThe government will be introducing a carbon tax in 2009All companies will have to report power usage by law
5 Industry StudiesRecent studies reveal that data centre power densities have increased ten-fold in the last 10 years and that cooling represents upwards of 60-70% of the total data centre power spend for the majority of customers. These costs are driven by the data centre power requirements and the volume of cooling airflow requiredSource HPWhyThe onset of high density computing including blades
6 What are the cooling challenges in today’s data centres? 1. Agility – the ability of a system to adapt to change – increasing and unpredictable power densities driven by ever-changing business requirements.2. Availability – to eliminate hotspots and vertical temperature gradients at the face of the rack and to assure redundancy when required.3. Lifecycle costs – to optimise capital investment and available space – the ability to accelerate speed of deployment and lower maintenance costs, increase ROI and maximise operational efficiency.4. Manageability – Simple and intuitive configuration – predictive failure analysis and provision of cooling performance data.5. Serviceability – Decrease mean time to recover – simplify complexity – easier service procedures – minimise multi-vendor solutions.
7 Cooling Solutions Typical 1U Server Typical 7U Blade Server 32oCTypical 1U Server75.5 l/s/kW22oC49.6 l/s/kW( kW)Typical 7U Blade Server22oC38-42oCBlade servers both offer increased computing density and a significant performance per watt benefit. These inherent advantages of blades when matched with advanced power and cooling infrastructure, can assist to drive out waste in the physical environment and drive up efficiencies.It is not only direction of airflow that must be taken into consideration, but alsotemperature rise across the server and the air volume required by the server fans.Blade servers are the most electrically efficient form of server. Available blade types for agiven blade server system can vary dramatically in performance and power consumption
8 Room Based Cooling Existing Configurations The predominant architecture for cooling data centres since the inception of the mainframe has been raised floor air delivery from perimeter computer room air conditioners (CRAC).At lower densities (1 – 5 kW / rack), adequate cooling is provided to sensitive IT equipment, despite the mixing of air throughout the room.Major obstacle is the length scale of air delivery- distance between cooling units and heat load make it difficult to properly remove the heat generated from IT equipment without mixing with supply air- results in hot spots and a complicated design approach to air distribution
9 Cooling SolutionsWhen you pump cold air into a raised floor, you expect it will all arrive at its destination -- the server racks. But like a disobedient child, some of the cold air is probably sneaking off where it shouldn't, and it's costing you money.Fully populated blade chassis requires approx 223 l/sCfm – Cubix feet per second
10 Row Based Cooling Existing Configurations Place the air conditioning units in the row of rack enclosures.Incorporating a hot / cold aisle design, heat is removed from the hot aisle as it is dispelled from the IT equipment. The hot air is then cooled and discharged to the cold aisle.Inherent energy efficiency advantages:- fan power reduction to move the air- shift in mindset from cold air supply to heat removal- removal of heat before it has a chance to mix with surrounding air in the room makes the remaining areas in the room a large available volume of supply air- length scale for air delivery is only a few metres or less (varies on number of racks) rather than tens of metresIn-Row cooling architecture is a new approach to data centre cooling that provides a predictable way of addressing the heat generated by IT equipment within a data centre or small server room. The fundamental purpose of in-row cooling is to capture heat from the IT equipment in the hot aisle and neutralize the heat before it mixes in the room. Hot air mixing within the data centre is the fundamental cause of thermal issues. By locating the air conditioner in the IT row v. the perimeter, over 30% of the wasted electricity can be re-gained. This provides a predicable cooling solution that dramatically increases the cooling efficiency and thus improvement in overall computing performance per wattNote: In-row cooling architecture, as depicted, utilises a free air discharge without ducting or any containment of hot or cold air streams.
11 Close Coupled Cooling Cooling Solutions Eliminate the supply air from the equationCapture all the heat where it is generated, from the hot aisleRemove the heat before it mixes with air streams outside the hot aisleNo obstructions to block the air pathAvoid complex engineeringVariable speed fans to match cooling capacity to power load in each aisleRoom temperatures will be easier to maintain with less warm air escaping the hot aisleClose Coupled Cooling
12 Cooling SolutionsHow do I cool mydata centre for FREE?
13 Free-Cooling Chillers Cooling SolutionsFree-Cooling ChillersUse ambient air to cool the warm return waterIdeally suited to new designs, but free-cooling options can be retro-fitted to existing installationsTechnical Presentation byFabian Lant, Export Manager of Geoclima.
14 Cooling Solutions TRADITIONAL Chiller Water Circuit Schematic Here you can see the traditional packaged chiller refrigeration and chilled water schematic: warm water returns from the system and is cooled using the traditional refrigeration vapour-compression cycle. Note that there is no reference to the ambient air temperature; if the return water is warmer than the chilled water setpoint, the compressors are called into operation, regardless f the outdoor air temperature.TRADITIONAL ChillerWater Circuit Schematic
15 Free-Cooling Solutions Now you can see the free-cooling chiller schematics: note the extra components highlighted in the green boxes - warm water returns from the system and the chiller microprocessor constantly compares its temperature to the ambient air temperature and the required leaving water temperature (LWT) setpoint. In simple terms, if the ambient air is one degree or more below the return water temperature, then some free-cooling will be available, so the three-port free-cooling valve is opened and the warm return water is passed through the free-cooling coil. If all of the cooling demand cannot be met by the free-cooling means alone, only then will the mechanical cooling be energised. We design our free-cooling coils to give 100% free-cooling when the ambient air temperature is six degrees below the required leaving water temperature setpoint. Using the hot aisle containment systems mentioned later in this presentation, an LWT of 12.7 degrees is required, so we would typically be designing to achieve full free cooling at an ambient temperature of 6.7 degrees.FREE-COOLING ChillerWater Circuit Schematic
16 Free-Cooling Solutions – AverageAir Temperature
17 Free-Cooling Solutions – Air Temperaturevs Free-Cooling %
18 Free-Cooling Chillers Free-Cooling SolutionsFree-Cooling ChillersAir cooled systems: typically 100kW-1200kWUses condenser fans only (i.e. no compressors) to pre-cool the returning chilled waterCompressors only run if the required leaving water temperature cannot be achieved with free-cooling systemLower compressor run time = less maintenance and less down- timeCapital payback typically <18 months EVEN FOR WORST CASE N+1: real bottom-line savings thereafterMaximised benefits with elevated chilled water temperatures, e.g. Hot Aisle Containment applications
19 Free-Cooling Chillers Free-Cooling SolutionsFree-Cooling ChillersWhat do I need to do to be able to utilise free cooling?1. Create predictable air flow2. Capture and Contain hot air to maximise return air temp3. Raise entering water temperatureWater is 350% more efficient than air at transferring andtransporting heat
20 Raised Floor Airflow Air Containment Cold Air Containment improves cooling efficiencyCold aisle containmentAdvantages – can be retrofitted in some cases to existing perimeter cooling installationDisadvantages – must be installed throughout the room as if only installed in a selected area it would have the effect of increasing the heat across the rest of the roomUses the whole room as a hot air return – in the event of a power failure heat ingress into cold isle would be quick creating high thermal rate of change
21 Row Based Cooling With HAC Air ContainmentRow Based Cooling With HACIn-Row cooling architecture is a new approach to data centre cooling that provides a predictable way of addressing the heat generated by IT equipment within a data centre or small server room. The fundamental purpose of in-row cooling is to capture heat from the IT equipment in the hot aisle and neutralize the heat before it mixes in the room. Hot air mixing within the data centre is the fundamental cause of thermal issues. By locating the air conditioner in the IT row v. the perimeter, over 30% of the wasted electricity can be re-gained. This provides a predicable cooling solution that dramatically increases the cooling efficiency and thus improvement in overall computing performance per wattPlace the air conditioning units in the row of rack enclosures.Incorporating a hot / cold aisle design, heat is removed from the hot aisle as it is dispelled from the IT equipment. The hot air is then cooled and discharged to the cold aisle.Inherent energy efficiency advantages:- fan power reduction to move the air- shift in mindset from cold air supply to heat removal- removal of heat before it has a chance to mix with surrounding air in the room makes the remaining areas in the room a large available volume of supply air- length scale for air delivery is only a few metres or less (varies on number of racks) rather than tens of metres.
22 Hot Aisle Airflow Air Containment Hot Air Containment significantly improves cooling efficiencyHot AisleAdvantages – can be installed in an existing datacenter as is room neutralMaximise hot air containment preventing mixingIn the event of a power failure there is a room full of cold air to be used, also normal config is to connect in row coolers to UPSIf false floor exists already then the underfloor space can be used for chilled water pipe work separating water and power
23 Free-Cooling Cost Saving Summary Free-Cooling SolutionsFree-Cooling Cost Saving Summary120kW N+1 installation with Free-Cooling ChillersAchieve pay-back of the cost difference to standardchillers in <10 months for one machine; 18 months for worst-case, two-machine N+1 installationsTypically achieve 100% Free-Cooling of data centre 26%(>3 months) of the yearAchieve a useable level of Free-Cooling for >75%of the yearBased on UK average daily temperatures measured in the SE region, 1997 to 2006 inclusive
24 Alternatives to Free-Cooling for energy efficient cooling solutions Turbocor ChillersVery high efficiency, especially at lower loadsCentrifugal compressor with magnetic bearings eliminates oil and the maintenance / efficiency losses associated with traditional systemsCombine with FREE-COOLING for maximum effect
26 Turbomiser The Product Cooling SolutionsTurbomiser The ProductAir and water cooled systems 200kW-1200kW+Oil-free, electronic, variable speed centrifugal compression systemCombining flooded evaporators, high-efficiency fans & all-aluminium condenser coils with the revolutionary compression system to provide the ultimate energy efficient solutionReduced life cycle costs through reduced energy consumption and lower maintenanceIPLV / ESEER – Typical Integrated Part Load Value and European Seasonal Energy Efficiency Ratio values: Air-Cooled Turbomiser Chiller = 5+, Standard Chiller = 4 max.
27 The Features and Benefits Cooling SolutionsThe Features and BenefitsOil-Free TechnologyImproved efficiencyThe end of routine oil changesLow Noise / No VibrationSo quiet that with normal background noise you can’t hear it runNo vibration typically means no refrigerant leaksCompressor Start-Up Current - From 2 Amps!Inherently high power factor for maximum motor efficiency andreduced peak electricity demandSoft start with smaller emergency generators
28 Magnetic Bearing and Rotor System Cooling SolutionsMagnetic Bearing and Rotor SystemMagnetic bearings and sensors keep the shaft properly centered and positioned at all times.
29 Flooded vs Direct Expansion [DX] Evaporators Cooling SolutionsFlooded vs Direct Expansion [DX] EvaporatorsDX systems require superheat to ensure only vapour reaches the compressorExpansion valves operate at relatively high pressure differentials, hence the need to keep head pressure artificially highFlooded evaporators do not necessitate superheatThe combination of flooded evaporator and predictive electronic controls ensures a minimum differential is maintained at all times to take advantage of low ambient conditions to maximise COPs under these conditions
30 Summary Benefits Cooling Solutions Government ECA approval status Excellent full load energy efficiencyFurther improved part load performanceLower energy bills, reduced carbon footprintVirtually no mechanical wearUnrivalled reliabilityNo oil to degrade the system over timeLow noiseNo vibrationFull remote monitoring capability30% lower overall life cycle costs
31 If you’re still not convinced Cooling SolutionsIf you’re still not convincedEnergy–Efficiency LoansInterest-free unsecured loans of between £5,000 and £100,000 are available for small and medium sized businesses who are investing in an energy-saving project. Coupled with the ECA scheme this offers business really significant savings.Free Energy SurveysIf your energy bill is higher than £50,000 per year, then you may qualify for a FREE energy survey to provide you with a practical action plan of energy saving measures tailored to your business.
32 If you’re still not convinced Reducing carbon footprintIf you’re still not convincedCarbon ManagementAs an impartial business advisor, the Carbon Trust can help you anticipate what’s ahead. Their Carbon Management Programme helps larger companies address the strategic issues associated with climate change. The results are cost savings, clarity around responses to legislation and corporate reputation, and brand enhancement.What is The Carbon Trust ?The Carbon Trust is an independent, Government-backed organisation that helps businesses and public sector organisations cut energy costs to combat climate change. Impartial advice and assistance is generally free to UK businesses.The Carbon Trust Standard certifies that an organisation has genuinely reduced its carbon footprint and is committed to making further reductions year on year.Achieving the Standard will help you:Prove your climate change credentialsBuild your reputationCreate a competitive edge.If your organisation is committed to measuring, managing and reducing its carbon footprint, then find out how the Carbon Trust Standard can give you the recognition you deserve.
33 The Bottom Line Cooling Solutions Two major benefits for business The Enhanced Capital Allowance (ECA) Scheme and the Energy Technology ListEnergy savingsProducts listed on the ETL are highly energy efficient, and should produce significant long-term financial benefits by reducing your energy bills and Climate Change Levy payments.The ECA scheme provides businesses with 100% first year tax relief on their qualifying capital expenditure. The ETL specifies the energy-saving technologies that are included in the ECA scheme.The criteria for the ETL changes annually, yet new products are added each month. The Carbon Trust is making the new Energy Technology List simpler for you to use - and easier for your customers to find your products. Look out for the new, improved website in the near future, where you can get alerts on product additions and updates on the development of the scheme.