Tuesday, December 21, 2010

【 Weak current College 】 how less power over your data center


Summary: in the national electric stress environment, the enterprise data center energy efficiency of the engine room without delay. From the engine room power distribution, power IT equipment accounts for 44% of total energy consumption of refrigerating systems, 38%, power system accounted for 15%, 3% of lighting systems. In IT equipment power cannot be reduced, you will need to think of a way from the cooling system and power supply systems to conserve electricity.

Enterprise data center room is the power consumption of the "big", because the computer equipment of perennial run 24 hours a day, room venues to independent air-conditioning control system, and designed to meet the room ambient temperature, humidity, air dust concentration of technical requirements for engine room environment conditions of technical support of other equipment, and computer equipment of its own electricity, constitute room overall power load.
Therefore, in the national power climate of tension, the enterprise data center energy efficiency of the engine room without delay. From the engine room power distribution, power IT equipment accounts for 44% of total energy consumption of refrigerating systems, 38%, power system accounted for 15%, 3% of lighting systems. In IT equipment power cannot be reduced, you will need to think of a way from the cooling system and power supply systems to conserve electricity.
In the room, in addition to essential IT load, the power consumption of air conditioning and refrigeration equipment ranks in the poll. According to expert analysis, a typical data center in initial investment, refrigeration equipment accounted for only 6% of total investment, but the latter part of the electricity charges can represent an entire data center electricity charges of 38%, is a no-compromise "power users". Therefore, choose energy-efficient cooling system of the engine room, is a sophisticated data centers must consider.
In the design of refrigeration system solution, the entire data center room as a whole, from the various links to take full account of energy saving. To APC NetworkAir precise cooling launched in solution, for example, it has a modular design, achieving the average of temperature and humidity control, each module will detect the temperature, humidity information sent to the main controller, master controller calculates the average of temperature and humidity will be feedback to the individual modules. Such a unified operation mode, not different air conditioning room temperature and humidity variations in part caused by the air conditioning in the refrigeration and another part in part in heating, humidification and dehumidification of the other part, thus preventing inconsistent actions result in inefficiencies.
In addition to precision cooling system itself, in the overall planning of the engine room should take full account of how to save energy province electricity. Refrigeration system efficiency is the key to a valid distinction between hot and cold air, guaranteeing internal IT equipment to the Cabinet at normal temperatures. APC offers unique "hot channel" (HotAisle) and "cold channel" (ColdAisle) concept, changed the previous data center machine counter placed in the same direction, a "face to face, back to back" Cabinet Hina so that it conforms to the server, and other it equipment from the front air intake and exhaust air from the rear of the design, thus effectively partitions the cold, hot air, avoid front cabinet exhaust hot air and cold air mixed into the rear Cabinet result in reduced cooling effect.
In a typical data center, cooling efficiency if you slow down 20%, it is possible to cause the entire power consumption increased by 8%. But if the plan is reasonable, the rooms of the refrigeration system can save energy by 20% ~ 30%, i.e. a reduction of 10% of total electricity consumption. Power systems energy efficiency
From the engine room, the proportion of electricity distribution, power consumption of power itself is also accounted for 15% of the level of utilization, UPS will directly affect the size of the power consumption. To APC Silcon UPS (soo Kang), for example, the input power factor 0.99, and input power factor 0.8 ups compared to significantly reduce system power and corresponding loss. From the UPS's own efficiency, APC's SilconUPS work efficiency as high as 97%, its power does not exceed 3%. UPS its efficiency is low, the overall power consumption increases the inexorably, tariff increase of expenditure. In addition, if you consider the tie UPS with unit, also has very strong APCSilconUPS-saving advantages. For example, if the system of 40kVA with APC's product mix with the oil, because the input power UPS 0.99, unit, UPS equivalent a pure resistance load, so you only need the generator 50 ~ 60KW, i.e. UPS and unit ratio is 1: 1.3.

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