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How to use energy-efficient solutions to build a green data center

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Existing office space in the enterprise data center renovation, data center design engineers, is a daunting task. The presence and quantity of space, floor height, external windows, will have a great impact. Data centers consume nearly half the supply of air-conditioning ups power systems, it is a key factor in the impact of the energy efficiency of the engine room.
 Renda electronic original two data centers in Taipei headquarters, branch offices two office buildings. The new data center renovation project the two into one, to centralize resources and system integration, but also has high reliability, environmental protection, and ultra-high scalability under a modular design.
 Electronics as any one in the world have sales outlets, multinational production equipment and R & D centers, need to have a high degree of "computerization" of the system to deal effectively with global operations. To protect the enterprise resource planning (ERP), e-mail servers, web servers, application servers, and a variety of other important systems and other IT applications, the reliability of data center infrastructure is the highest priority consideration.
In addition, it may be more important, any determination based Electronic "Smarter, Greener, Together to create a smart green life" concept, creating an annual average power usage effectiveness (PUE) of less than 1.43 of a new room to meet the Green Grid Alliance Gold standard room efficiency defined.
Project proposals
 The newly constructed data center, covering about 230 square meters, divided into cold aisle containment zone A / B and Hot Aisle Containment Zone C / D, a total of 63 sets of cabinets, plans to reach 240-280kW IT equipment capacity in five years. There are also separate store room and multiple sets of two UPS battery cabinet. Renda InfraSuite Manager is used to display the data center infrastructure management systems, IT equipment utilization, and real-time video monitoring 2x3 LCD panel LCD TV wall, real-time, full of energy consumption in the data center to monitor and manage the equipment room.
 For the transformation of the new data center, up from the four aspects of any air conditioning systems, power supplies, cabinets, environmental management system to start, specific programs include:
 An air-conditioning system
 Many factors make the two year old room to spend a lot of power. Old data center PUE value of up to 2.01 per 1kW of IT equipment power consumption, need the same amount of non-IT power consumption for cooling. The new data center is a substantial increase in energy efficiency to achieve the target PUE of 1.43 or less, up to take any of the following six measures:
Issues affecting the countermeasures
A lack of hot / cold aisle containment due to the mix of hot and cold air, must be set low temperature hot / cold aisle containment
2 traditional AACS cooling efficiency is low efficient cooling system
3 deficiency variable air flow and variable water flow system even at low load also use high frequency ups power HVAC fan speed
4 lack of natural cooling in spring, autumn or winter cold air can not be used outside using natural cooling
    (Gas side and the water of the side Jieyou
5 is not synchronized with the building air conditioning system does not use the air conditioning system to obtain more Canon Tower Room and building air conditioning system efficiency SmartSync
6 room and low temperature cooling water to raise the temperature increase in electricity demand
1. Cold / Hot Aisle Containment and RowCool series rackmount precision air conditioning applications
 Hot / cold aisle containment design, avoid hot and cold air mixing and improve cooling efficiency. With any precision air conditioning up RowCool series rackmount applications close to a heat source, which can effectively remove the hot spot and avoid overheating IT equipment downtime.
2. chilled water air conditioning system
 Compared to traditional air-cooled air-conditioning systems, chilled water air conditioning system energy savings of three percent to 40RT (refrigeration tons) of the system, for example, energy consumption can be reduced to 0.89kW / RT from 1.25kW / RT.
Air-cooled water-cooled system
Energy 1.25kW / RT 0.89kW / RT (30% reduction)
3. Frequency HVAC (HVDC) systems
 RowCool Series Rack precision air conditioning continuously adjustable fan speed, and control of water helps to significantly save energy, lower fan speed one percent, saving an estimated 27 percent. RowCool system DC fans and outdoor units are inverter technology. Cooling tower fan with variable air flow control, chilled water and condensate pump variable water flow control is used.
4. Natural cooling Free Cooling (air side and water side)
Under the weather conditions in Taipei, Taiwan, the year 46% of the time can be naturally cooled. When the temperature is below 25 ℃, the air-side free cooling starts automatically, the external cold air introduced into the engine room, and RowCool units, pumps, cooling towers and chiller shutdown. When the temperature is below 15 ℃, the water-side heat exchanger and cooling tower natural cooling system startup, shutdown the chiller room to reduce energy consumption.
5. Data Center sync with chiller intelligent building
Taipei headquarters of certified electronic Renda as "Diamond Green Building", energy consumption 58% lower than the average office building. The building itself is equipped with two sets of chilled water systems:
Efficiency of the cooling capacity range operation period
Building chiller high daytime high office area
Low Low chiller data center room area at night
Data center chiller day off, use high efficiency chiller building. Data center ice at night host boot, providing air conditioning for the data center. Data center air conditioning systems and air-conditioning system intelligent building synchronized to maximize the energy saving effect.
6. The optimal room temperature setting
The recommended value in accordance with international standards, data center temperature range between 18 ~ 27 ℃ and 20 ~ 25 ℃. Although the data center temperature is generally in line with the recommendations set between the range of 18 ~ 20 ℃, but there is still room for improvement.
International standard temperature range ideal value
TIA-942 20 ~ 25 ℃
ASHRAE TC 9.9 18 ~ 27 ℃
NBES 18 ~ 27 ℃
Rough estimate, the temperature is increased once the data center can bring 2-3% energy saving. So the rules, such as the temperature of the cold channel increased from 18 ~ 20 ℃ to 25 ℃, the data center can be saving 10 to 14%. In addition, RowCool series rackmount precision air conditioning into the water temperature can be increased further energy saving, the usual practice is to ice into the water temperature is set at 7 ℃, if raised to 13 ℃, data center efficiency of 20%.
 In addition to the air-conditioning system, either over the whole data center infrastructure solutions also apply to high-efficiency power systems, modular cabinets and data center environmental management system, so that all aspects of the entire data center achieve green energy.
 Two, UPS power supply system
 Data center reliability, efficiency and scalability requirements, UPS power supply system is a great challenge. The new data center used by Renda Modulon DPH Series UPS, is a whole new generation of modular, hot-swappable, AC-AC efficiency up to 96% of high-performance UPS, its hot-plug power supply module can support seamless data center from the long-term upgrade. Renda's PDC and PDU also uses a modular design, for example, the output of the circuit breaker can be hot-plugged, two power strips, each group can be expanded up to 42 circuit breakers. PDC and PDU with excellent power protection and monitoring capabilities, and its flexibility and scalability to meet the actual demand distribution.
 Third, cabinets and accessories
 Airflow management is extremely important for high power density racks equipped computer room. Taipei headquarters of the new engine room of any long-term planning of electronics rack power density of up to 10 ~ 15kVA. Modular cabinet opening rate of over 70%, which can meet the needs of high-density IT room. Cabinet with high capacity, static load up to 1420kg or dynamic loading capacity of 1000kg, does not account for too much valuable floor space.
Fourth, the environmental management system
 Renda data center management system (DCIM) system InfraSuite Manager, integrating a variety of facilities and IT equipment in a single platform. Various means environmental monitors (EnviroProbe) with Central Monitoring Station (EnviroStation) can be energy, power systems, air conditioning, environment, preservation of assets, server monitoring, seamless, real-time and complete management. PUE history can help IT managers to analyze and understand the efficiency of the power used in the engine room.