Improving the climate for data centers

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1 Maximum performance for cool computers Improving the climate for data centers We create a good indoor climate.

2 Supply air Return air Return air Outside air Exhaust air Pressure floor Our ventilation technology feeds precisely the required air volumes for cooling No water-carrying parts in the IT department thanks to our installation methods Greatest possible security for IT thanks to onsite construction configurations no exposure to external influences Development of failover options

3 Efficiency and acumen. Menerga is rational. Security for super computers through custom climate. Capital costs classic air conditioner Requisite peripheral devices Operational costs Capital costs for Menerga air conditioner including control system and adjustment setting Requisite peripheral devices Operational costs Savings Holistic, systematic, and giving you room for savings. It s still all about zeros and ones. But today, data centers perform their number crunching operations in milliseconds. More and more digital processes are being handled, and super computers and data centers are becoming ever more important. Equal to the growth of their importance are the requirements on ventilation and cooling. Both computers and their operators need a suitably comfortable environment in which to work at their peak on a continual basis. Often, it s not only data that is highly sensitive, but also the computers themselves. Menerga specializes in optimizing air conditioning. With secure, energy-efficient concepts that are both compact and highly performant, Menerga offers ready-to-use integrated solutions that set new standards and offer returns on your investment. Menerga fields of application Museums / galleries Low-energy buildings Theaters Historical buildings Sports grounds Public swimming pool halls Private swimming pool halls Hotels / restaurants Schools / universities Hospitals Shopping centers Offices / commercial buildings Banks Industry Data centers

4 Energy-efficient cooling. Menerga is responsible. Requirements on climate control for data centers Cooling plays an especially important role when it comes to planning, building, and operating a data center. On the one hand, cooling accounts for a significant proportion of the energy costs. Depending on local climate conditions and the set-up of the cooling system, this proportion is usually at least 20 % of total energy costs. However, 20 % is typically at the lower end of the scale. Some cooling installations, currently in operation, account for over 60 % of total electricity consumption. One the other hand, Year-round cooling operation Device in operation 24 hours a day Special requirements the project management of the cooling system presents a special challenge, since these are mid- to long-term investments that will operate over several generations of IT hardware. October November December 9 January February March April May June July August September Year-round operation Device in 24-hours-a-day operation all year round Heat transmission through air, with minimal downstream pressure loss in the device, to minimize energy consumption Minimal loss of heat to the outside air, minimal fresh air volume flow for smaller fresh and return air ducts, to minimize energy consumption Minimal fresh air (for hygiene reasons) with use of free cooling to reduce energy requirements Airtight separation of circulation air flow from cooling air flow using a recuperator Low cooling air volumes, important for use indoors for duct and sound proofing measurements Energy efficient operations, even under partial load conditions Possible to use compact air treatment installations indoors, advantageous because technical rooms provide minimal space in comparison to the actual server room Inbuilt increased operational security, for example ventilators on parallel circuits, several independent cooling systems, such as adiabatic evaporative cooling and additional mechanically-driven compression refrigeration Quick start following grid outage

5 4 / 5 Energy costs for cooling at least 20 % of energy costs are accounted for by cooling up to over 60 % may be consumed by cooling Energy costs for server farms and data centers in Germany TWh Development until now TWh/year TWh TWh 9.14 TWh 6.65 TWh Scenario Business as usual Scenario Moderate efficiency increase Scenario Green IT Source: Borderstep 2008 Legal requirements In Germany, the following legal requirements apply to data center operations: EnEV 2007 (German regulation for energy saving in buildings and building systems), in force since January 1, 2007 and EEWaermeG (Renewable Energies Heat Act), in force since January 1, These regulations entail an obligation on the construction of new, non-residential buildings, with building applications dated from January 1, Important: The usage requirement now also covers the refrigeration requirements for cooling the rooms, in addition to the heating requirements. Required proportions of renewable energy: - For solar power, at least 15 % of the heating/cooling energy requirement. - For solid/gaseous/liquid biomass, at least 50/30/50 % respectively of the heating/cooling energy requirement. - For geothermal/ambient heat (natural heat sources), at least 50 % of the heating/cooling energy requirement. As regards the practicability of these requirements in data centers, the infrastructure of the data center must ensure the required availability, security, emergency planning and maintainability in operations before all other requirements are met. Energy usage in accordance with EEWaermeG in data centers stipulates the usage of ambient heat or free cooling. The use of recuperators for free cooling fulfils the requirement for the usage of ambient heat. The EU Code of Conduct for Data Center Efficiency was published by the European Community Joint Research Centre on November 19, 2008.

6 As individual as a finger print, Menerga has character. Menerga devices: For green IT Adcoolair Exhaust air Supply air Benefits: Usage of free cooling to increase energy efficiency Use of adiabatic evaporation cooling as a natural cooling process Low downstream pressure loss in the device for low energy consumption Compact construction means device can be used indoors without an additional cooling tower Quick start after grid outage in no more than 15 seconds Integrated control and adjustment technology optimizes and increases energy efficiency Outside air Return air We have developed a new model of device especially for data centers, which delivers heat removal from rooms with high heat loads by means of free cooling, adiabatic evaporation cooling and integrated compression refrigeration Adcoolair. In the data center of Banco Santander, three devices are used for each server room. All three devices run continuously; if one fails then the other devices are able to compensate for the lost cooling operation. The total cooling requirement of the data center is 16 MW. Dehumidification Humidification Heating Cooling Adiabatic evaporation cooling Heat recovery

7 6 / 7 Banco Santander, Spain Device model: Adcoolair Net refrigeration capacity: 450 kw Nominal air output per unit: 78,000 m³/h Adiabatic cycles: 2 Cooling cycles per device: 4 Refrigeration requirements: 16 MW EC ventilation technology EER (100 %): 7.2 Moisture Control and recovery Free cooling Sorption adjustment 24h Customer service

8 Count on us. Menerga is flexible. More device models for data centers Adsolair (also available without compression refrigeration) Exhaust air Outside air Supply air Return air Profile: Total refrigeration capacity: kw Variants for data centers with indirect free cooling and integration adiabatic cooling Nominal air output: 1,200 48,000 m³/h Benefits: Usage of free cooling to increase energy efficiency Use of adiabatic evaporation cooling as a natural cooling process Compact construction means device can be used indoors Integrated control and adjustment technology optimizes and increases energy efficiency The principle of adiabatic evaporation cooling: The Menerga Adsolair principle makes use of the benefits of adiabatic evaporation refrigeration without any of the disadvantages of return air humidification. An integral component of this principle is the double plate heat exchanger, in which the outside air is adiabatically cooled. The escaping air is then cooled by cool and moist supply air, without being humidified itself. The high efficiency is achieved through both processes ( adiabatic evaporative cooling of the outside air and cooling of the escaping air) taking place in the double plate heat exchanger. When the outside air is sprayed, the water evaporates in the heat exchanger, and cools both the exchanger and the outside air.

9 8 / 9 Frecolair Hybritemp Profile: Refrigeration capacity: kw Developed for use in data centers or other premises with high thermal loads or requirements on internal humidity For cooling and ventilation Variants for data centers with direct free cooling and integrated chiller Nominal air output for escaping/return air: 2,600 27,000 m³/h Nominal air output for outside/supply air: 3,500 36,000 m³/h Benefits: Low operating costs through free cooling Use of energy efficient components, for example output-regulated compressors and ventilators Low required space, no additional constructions requirements for cooling generation Mature, space-saving compact construction with integrated control and adjustment Energy efficient operational concepts result in very low energy costs Profil: Refrigeration capacity: kw Variants for data centers with free cooling, integrated chiller, integrated adiabatic cooling Nominal air output: 4,400 19,000 m³/h Benefits: Compact form thanks to integrated re-cooling plant Low air volumes for heat dissipation Low required space, no additional constructions requirements for cooling generation Reduction in CO 2 emissions Use of energy efficient components, for example output-regulated and efficient heat transmission Problems of data center operators 83 % Energy consumption 45 % Space requirements Benefits of Menerga technology Cost-effective and environmentally friendly refrigeration High temperature efficiency Low connected wattage Low power consumption High performance figures: Small compressor installations are sufficient, with low provision costs

10 High performance has many facets. Menerga is collaborative. Menerga inside: Our references communicode essen, Germany Device model: Adcoolair Refrigeration capacity: 20 kw Air flow volume: 3,500 m 3 /h Thermal load: 5 10 kw State Bank for Baden-Wuerttemberg, Germany Device model: Adsolair Refrigeration capacity: 105 kw Air flow volume: 15,500 m 3 /h District Office of Freiburg, Germany Device model: Hybritemp Refrigeration capacity: 59.1 kw Air flow volume: 5,300 m 3 /h

11 10 / 11 University of Passau, Deutschland Device model: 6 Hybritemp Refrigeration capacity: kw Nominal air output: 5,300 16,000 m 3 /h Source: HTWG, Constance University of Applied Sciences Constance, Germany Device model: Frecolair Refrigeration capacity: 30.8 kw Air flow volume for return air: 7,100 m 3 /h Air flow volume for outside air: 9,500 m 3 /h

12 Menerga GmbH GutenbergstraSSe Muelheim an der Ruhr Germany Tel Fax