Direct Outside Air Cooling Solutions

WeatherData Location: LONDON_GATWICK,ALLREGIONS,UNITED_KINGDOM WeatherHours 28 to 1 56 to 29 84 to 57 112 to85 140 to113 168 to141 196 to169 224 to197 252 to225 Class A4 Class A3 Class A2 Class A1 Recommended -10 -5 0 5 10 15 20 25 30 35 40 45 50 DRYBULBTEMPERATURE - °C -5 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 -10 -5 0 5 10 15 20 DEWPOINTTEMPERATURE - °C Chart by: HANDS DOWN SOFTWARE, www.handsdownsoftware.com 15% 25% 2% 4% 6% 8%RELATIVEHUMIDITY 10%RELATIVEHUMIDITY 20% 30% 40% 50% 60% 70% 80% 90% -10 -5 -5 0 5 5 10 10 15 15 20 20 25WETBULBTEMPERATURE - °C What do Google, Yahoo, Microsoft, Amazon and BT all have in common? They all use outside air free cooling solutions in many of their Data Centres. Design well, cool efficiently What is Free Outside Air Direct Cooling? 3 4 5 6 7 8 2 9 10 11 12 13 14 1 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 3 4 5 6 7 8 2 9 10 11 12 13 14 1 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 3 4 5 6 7 8 2 9 10 11 12 13 14 1 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 3 4 5 6 7 8 2 9 10 11 12 13 14 1 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 3 4 5 6 7 8 2 9 10 11 12 13 14 1 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 3 4 5 6 7 8 2 9 10 11 12 13 14 1 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 3 4 5 6 7 8 2 9 10 11 12 13 14 1 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 3 4 5 6 7 8 2 9 10 11 12 13 14 1 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 There is growing recognition within the Data Centre industry that server operating temperatures can be increased, without any detrimental effect on their operating efficiency, provided the surrounding climate is controlled effectively. Using filtered outside air is a highly effective way of cooling a Data Centre and, within the UK, can be utilised for the majority of the year. By using direct free outside air, condensers, compressors etc. are not constantly operating, consuming large amounts of energy. Adoption of ASHRAE Data Centre standards has significantly reduced the need for mechanical cooling to a few hours, if at all, resulting in massive energy savings whilst also extending the expected lifespan of the cooling equipment. ASHRAE’s Data Centre Classes as shown on the chart opposite, together with the UK weather data chart, clearly demonstrate that by allowing the Data Centre to use the allowable parameters, direct outside air cooling can be utilised for the majority of the year. By raising the supply air temperature, the number of days where direct free cooling can be utilised increases. This is increasedeven further when an aisle containment system is incorporated (as demonstrated in the charts below.) Total RoomCoolingusing amixture of direct outside air and recirculated air By introducing varying proportions of filtered outside air, mixed with return air to supply the required air temperature into the Data Centre, extensive savings can bemade as compressor and condenser operating times are greatly reduced. Cold Aisle Containment Cooling The incorporation of cold aisle containment within the cooling process can improve Data Centre cooling efficiencies even further. Due to the conditioned air being contained within the aisle, there is little opportunity for the hot exhaust air to mix with the cold inlet air, and, as the outside air can be usedmore frequently, due to the higher supply temperatures, energy use is significantly reduced and system efficiency increased. Hot Aisle Containment Cooling Usually considered for newbuildData Centres, this solution may be difficult to implement in some retrofit applications. Hot aisle containment can also enhance energy savings but also has to be considered alongside a number of other elements including working conditions within the hot aisle and capital/installation costs. 3 4 5 6 7 8 2 9 10 11 12 13 14 1 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 3 4 5 6 7 8 2 9 10 11 12 13 14 1 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 3 4 5 6 7 8 2 9 10 11 12 13 14 1 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 3 4 5 6 7 8 2 9 10 11 12 13 14 1 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 3 4 5 6 7 8 2 9 10 11 12 13 14 1 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 3 4 5 6 7 8 2 9 10 11 12 13 14 1 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 3 4 5 6 7 8 2 9 10 11 12 13 14 1 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 3 4 5 6 7 8 2 9 10 11 12 13 14 1 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 3 4 5 6 7 8 2 9 10 11 12 13 14 1 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 3 4 5 6 7 8 2 9 10 11 12 13 14 1 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 3 4 5 6 7 8 2 9 10 11 12 13 14 1 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 3 4 5 6 7 8 2 9 10 11 12 13 14 1 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 3 4 5 6 7 8 2 9 10 11 12 13 14 1 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 3 4 5 6 7 8 2 9 10 11 12 13 14 1 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 3 4 5 6 7 8 2 9 10 11 12 13 14 1 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 3 4 5 6 7 8 2 9 10 11 12 13 14 1 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 Outside air temperature o c Percentage of hours below this temperature per annum 12 54 13 59 14 64 15 69 16 74 17 78 18 82 19 85 20 88 21 91 22 93 23 94 24 95.6 25 97 26 98 27 98.8 28 99.3 29 99.6 30 99.8 31 99.87 32 99.94 33 99.97 34 100 MET OFFICE: SE ENGLAND 2011 234 Free Cooling Days 131 Chilling Days 285 Free Cooling Days 80 Chilling Days 197 Free Cooling Days 168 Chilling Days 22°C Controlled Data Centre Room Cooling 24°C Controlled Data Centre Room Cooling 27°C Controlled Data Centre Room Cooling 320 Free Cooling Days 45 Chilling Days 345 Free Cooling Days 20 Chilling Days 361 Free Cooling Days 4 Chilling Days 22°C Controlled Containment System Cooling 24°C Controlled Containment System Cooling 27°C Controlled Containment System Cooling From replacement cooling equipment for a small comms room, additional cooling for expansion of a medium sized Data Hall or the building of a large Data Centre, housing hundreds of high density server racks,Weatherite provides solutions that deliver optimum, energy efficient climate control. Weather Data Location: LONDON_GATWICK, ALL REGIONS, UNITED_KINGDOM Weather Hours 28 to 1 56 to 29 84 to 57 112 to 85 140 to 113 168 to 141 196 to 169 224 to 197 252 to 225 Class A3 Class A2 Class A1 Recommended -10 -5 0 5 10 15 20 2 DRY BULB TEM -5 0 5 10 15 20 25 30 35 40 45 50 55 60 Chart by: HANDS DOWN SOFTWARE, www.handsdownsoftware.com 10% RELATIVE HUMIDITY 20% 30% 40% 50% 60% 70% 80% 90% -10 -5 -5 0 5 5 10 10 15 15 20 Room Cooling Aisle Containment Cooling The relaxing of the server operating parameters opens up the opportunities for Data Centre professionals to review the type of climate control systems that can deliver optimum cooling efficiency – whilst substantially reducing energy consumption, carbon emissions and life cycle costs. UKWeather Data