System solution for data centres

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1 1 System solution for data centres Energy-efficient air conditioning with ServeLine Cooling IT infrastructure, high availability, low energy costs and communication with DCIM systems all in one from your specialists in indoor climate solutions from the Alps.

2 Secure and efficient cooling. Data centers guarantee high security for IT infrastructure; the requirements for building services equipment are equally high. In particular, an absolutely reliable cooling system is essential for cooling server rooms. Hoval ServeLine has been specially designed for this application it provides absolutely secure cooling with extremely high energy efficiency: mechanical cooling is not required for 97 % of the overall operating time. Sophisticated solution. ServeLine cools the IT environment indirectly with high-efficiency plate heat exchangers. The air in the server room remains completely separated from the fresh air; this eliminates the possibility of dust or variations in humidity affecting highly sensitive IT equipment. The system uses the interaction of different resources for cooling with minimal energy consumption depending on the current environmental conditions: indirect free cooling with fresh air adiabatic cooling mechanical cooling over cooling coil Redundant generation of cooling energy guarantees the required high availability. ServeLine is suitable for use in data centers with one hundred to several thousand square metres of air-conditioned IT area. The modular construction allows the cooling capacity of the system to be scaled up as required. The required cooling capacity can be adjusted or expanded step by step simply by parallel installation of additional compactly designed individual ServeCool modules. Hoval supports and advises you with its expertise during design and implementation of the cooling system to ensure that it is optimally set up for the layout of the computer rooms. Capacity-optimised control. The newly designed ServeNet control system seamlessly records all relevant parameters. It compares the current efficiencies of the indirect free cooling and the adiabatic and mechanical cooling, and controls the interaction of the different systems to ensure energy-optimised, demand-led operation. ServeNet can be fully integrated into the Datacenter Infrastructure Management (DCIM). It supplies all relevant information for real-time evaluation of the Power Usage Effectiveness (PUE) and continuous maximisation of the availability and efficiency of the data center. Take advantage of ServeLine Maximum energy efficiency Air conditioning by free cooling interacting with adiabatic and mechanical cooling For 97 % of the overall operating time without switching on mechanical cooling Continuous optimisation by the control system High availability Redundant generation of cooling energy for emergency cooling with cooling coil Indirect cooling with plate heat exchangers, which means no problems with dust and humidity in the IT infrastructure Complete modular system Space-saving, compact single modules Scalable cooling capacity Expandable in stages Low Total Cost of Ownership (TCO) Fast payback of investment with very low energy consumption Low maintenance costs with service-friendly design and high-quality components 2

3 Minimise energy costs. Air conditioning the server rooms offers the greatest potential for reducing energy consumption in data centers. Hoval ServeLine is setting standards: for optimum efficiency fresh air is used for free cooling; however, indirect cooling with plate heat exchangers means that there is no need to worry about adverse influences from the outside. If fresh-air cooling is no longer sufficient, adiabatic cooling is used, which saves energy and resources. There are only a few days in the year that require mechanical cooling. Annual hours % 14% 3% Fresh air temperature in C Annual curve Hoval ServeLine Free cooling Adiabatic cooling Mixed mode (adiabatic + mechanical cooling) Refers to: Extract air temperature...38 C Supply air temperature...24 C Supply air flow rate m³/h Cooling capacity kw Location...Frankfurt Annual hours % 83% 50% 14% 25% 3% Fresh air temperature in C Annual curve Conventional cooling system (water-cooled chilled water systems with dry cooler) Free cooling Mixed mode (free + mechanical cooling) Mechanical cooling Refers to: Extract air temperature...38 C Supply air temperature...24 C Supply air flow rate m³/h Cooling capacity kw Location...Frankfurt Vast energy savings. Comparison of the annual operating data of Hoval ServeLine with those of a conventional cooling system clearly shows the huge potential for savings: ServeLine reaches its full cooling capacity with indirect free cooling up to an outside temperature of 18 C. That is equivalent to 83 % of the total operating time (in comparison with 25 % with the conventional cooling system). If temperatures increase further, cooling is exclusively adiabatic up to about 27 C outside temperature (depending on the humidity). Only at even higher outside temperatures i.e. only 3% of the operating time does ServeLine operate in mixed mode with adiabatic and mechanical cooling. In comparison: A conventional cooling system cools in mixed mode from an outside temperature of 5 C (free and mechanical cooling) and exclusively with mechanical cooling from 17 C. The results: A massive improvement in power usage effectiveness, fast payback and not least a positive climate balance. 3

4 Thinking in solutions. As a specialist in indoor climate solutions in all possible applications, Hoval concentrates on thoroughly researched integrated solutions. The development of Hoval ServeLine concentrated on the specific requirements for data centers. The result: A refined cooling solution that offers modular design, efficiency and availability. ServeLine offers operators of data centers low total cost of ownership and maximum reliability. Modularity. ServeLine has a modular structure; the system consists of a number of individual ServeCool modules and the associated ServeNet control system. The total output is therefore freely scalable. It can be flexibly adjusted to the actual growth phase of the data center, which means that the investment can be made in stages. Availability. The cooling coils are designed so that the data center can be cooled exclusively from the cold supply of chilled water systems in an emergency. The generation of cooling energy is therefore redundant and guarantees the required high availability. Efficiency. Hoval ServeLine operates with three cooling processes: indirect free cooling, adiabatic cooling and mechanical cooling. This combination gives the highest efficiencies; the energy efficiency ratio (EER) rises to values above 18. 4

5 ServeCool Multifunctional air conditioning unit ServeNet Control system Technical data of ServeCool Sensible cooling capacity kw Share of mechanical cooling kw Indirect free cooling with fresh air in combination with adiabatic and mechanical cooling Heat exchange over plate heat exchangers with high heat recovery efficiency Separate air streams (no problems with dust and humidity) Fitted with high-efficiency EC fans Compact design, low space requirements Easily maintained with simple access and large inspection openings Demand-led control of the overall system Ensures maximum energy efficiency with continuous comparison of the efficiency of the individual cooling processes Seamless recording of all relevant parameters Visualisation directly at the unit Simple integration into building management and DCIM systems Integrated safety system with warning function Exhaust air fan Plate heat exchanger Extract air filter (G4) Spray nozzles Cooling coil Supply air fan Plate heat exchanger Fresh air filter (M5) Bypass damper Adiabatic pump (option) Fresh air temperature / humidity C / g/kg 35 / / 7.0 Supply air temperature / humidity C / g/kg 24 / / 6.2 Extract air temperature / humidity C / g/kg 38 / / 6.2 Power consumption supply air fan kw Power consumption exhaust air fan kw Power consumption adiabatic pump kw Supply air flow rate m³/h Exhaust air flow rate m³/h Water quantity l/h Flow / return temperature 1) C 14 / 20 Water-side pressure loss kpa 0.1 Footprint x height mm 2810 x 2825 x ) Water / glycol mixture with 30 % glycol Economical Low total cost of ownership Ecological Uses indirect free and adiabatic cooling Sophisticated Modular structure and adjustable Easy to use Maintenance-friendly access ports 5

6 Saving energy with system. Operators of data centers today are responsible for significantly reducing the energy requirements of IT infrastructure. The international company e-shelter colocation GmbH is meeting this challenge. The company has set up a new data center in Rüsselsheim in the MW range, but the energy consumption is significantly lower than that of comparable systems. For air conditioning e-shelter is using the solution developed in cooperation with Hoval. Facts Data center of e-shelter colocation GmbH in Rüsselsheim: 3 suites each with 1 MW cooling capacity 9 ServeCool individual modules are installed in every suite Performance tested by TÜV More than 85 % of the total operating time is exclusively indirect free cooling Engineering the weather. Inside and outside. Hoval ServeLine uses fresh air throughout the year to condition the environment of the hightech servers; it cools indirectly using plate heat exchangers. The system can provide the required cooling capacity of 80 kw per module by fresh-air cooling up to an outside temperature of 18 C. That means: 7470 annual hours of high-availability operation without using even one compressor. The system cools with the patented adiabatic system from 18 C to 27 C outside temperature (an average of around 1160 hours per year) without switching on mechanical cooling. During the remaining 130 hours the mechanical cooling system is run under partial load in combination with adiabatic cooling for optimum effi ciency. Hoval ServeLine is also a good choice with its extremely space-saving design. The system only requires an installation area of about 14 m² (including space for service and maintenance) for an output of 100 kw. The instrumentation and control system, developed with e-shelter, uses an industrial controller and provides the optimum control strategy at all times. The system selects the most efficient system for the current conditions from indirect free cooling, adiabatic cooling and mechanical cooling to optimise the operating costs for the innovative housing provider. Weather is inspiration. Particularly so when it is as changeable as it is here in the Alps. It infl uences life in the mountains more than any other factor. We have not only learnt to forecast the weather but we also know how to use technology to integrate the qualities of the weather to our everyday life: warmth, cold, humidity and wind judiciously measured and correctly applied give us a comfortable indoor climate. Weather is motivation. Extreme conditions in the mountains inspire our employees to their best performance. This is seen in our outstanding heating and climate control solutions. Our approach also lends clear contours to entirely different, simple and central values: We are friendly and family-run, responsible, solution-oriented, sophisticated, knowledgeable, enthusiastic and technology-driven. This shapes a culture in which the men and women at Hoval enjoy participating day by day. Responsibility for energy and environment. Indoor climate and world climate are in an ever-changing relationship. We design our heating and ventilation systems fully aware of our responsibilities to the climate. We protect our environment with the highest possible effi ciencies and the use of regenerative energy sources. We all profi t from this. 6

7 Take our word for it! Energy efficiency and alternative energy sources are what propels our company development. This helps you to save money and raw materials. We offer solutions tailored to your particular needs. It goes without saying that this also means providing systems that are easy to commission and operate. We are open to unusual ideas and innovations. This, in turn, benefits your project. As an owner-managed company, we are honest and sincere in our dealings with our employees and with our customers and suppliers. We place great importance to the quality of our products, consultation and services. As suppliers of complete solutions, we often exceed our customers expectations. The educational background and competence of our staff are the foundation of your satisfaction. Dedicated engineers guarantee professional, sophisticated solutions without compromises. 7

8 Responsibility for energy and environment The Hoval brand is internationally known as one of the leading suppliers of indoor climate control solutions. More than 65 years of experience have given us the necessary capabilities and motivation to continuously develop exceptional solutions and technically advanced equipment. Maximising energy effi ciency and thus protecting the environment are both our commitment and our incentive. Hoval has established itself as an expert provider of intelligent heating and ventilation systems that are exported to over 50 countries worldwide. Hoval heating technology As a full range supplier Hoval helps its customers to select innovative system solutions for a wide range of energy sources, such as heat pumps, biomass, solar energy, gas, oil and district heating. Services range from small commercial to large-scale industrial projects. International Hoval Aktiengesellschaft Austrasse Vaduz, Liechtenstein Tel Fax United Kingdom Hoval Ltd. Northgate, Newark Nottinghamshire NG24 1JN Tel Fax Hoval comfort ventilation Increased comfort and more effi cient use of energy from private housing to business premises: our comfort ventilation products provide fresh, clean air for living and working space. Our innovative system for a healthy room climate uses heat and moisture recovery, while at the same time protecting energy resources and providing a healthier environment. Hoval indoor climate systems Indoor climate systems ensure top air quality and economical usability. Hoval has been installing decentralised systems for many years. The key is to use combinations of multiple air-conditioning units, even those of different types, that can be controlled separately or together as a single system. This enables Hoval to respond fl exibly to a wide range of requirements for heating, cooling and ventilation. Hoval heat recovery Efficient use of energy due to heat recovery. Hoval offers two different solutions: plate heat exchangers as a recuperative system and rotary heat exchangers as a regenerative system. Art.Nr /

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