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Refrigeration system in a large data center trends
Release time:2016-11-09 11:35:09
As business increased, problems that came along with the data center, data centermanagers face increasing pressures and challenges. Enterprise business of constantly adjustment and change let data center general schema faced great of pressure, limited of physical space let data center extended sex and flexibility by limit, virtual of of lacks makes data center storage resources deployment capacity limited, complex changeable of heterogeneous environment let data center management efficiency became low, high home down of power consumption let data center energy cost quickly rose, data center of construction cannot meet business development of needs...... These require data center managers with limited budgets make data centers more efficient and reliable. Data center of the future developments affecting the industry nerve, contradiction and matters relating to energy efficiency in the data centerhas become the hot spot.
In the rapid expansion of data centers, many problems gradually out of the water, of which the most prominent is energy-intensive. Electricity costs are high, resulting in many data centers built, cannot afford. In 2006, the United States data centers total electricity consumption accounted for United States total annual electricity consumption of 1.5%, and an alarming rate--the percentage of growth has doubled by 2011. From China's situation, the data center power consumption and IT products is very large, growth is very fast. Experts say that from 2007-2012, the growth rate of electricity consumption in the area around 88%. In 2007, the total electricity consumption of more than 30 billion of IT products, about half the annual output of three gorges hydropower station. China data center, compared with foreign countries, the energy utilization efficiency is low, more than half of the energy consumption in IT equipment outside the facilities. Therefore, building Green data centers with energy saving features have become a data center building and consensus of the users as well as equipment suppliers.
In the low-carbon trend, data centers need make a difference in the relevant fields.Many data centers use new energy sources, such as solar energy, wind energy and so on have achieved very good results, reduce the consumption of the data center carbon; other data center heat recovery equipment is used to produce hot water, as living, shower, swimming pool use, reduce the consumption of carbon throughout thesystem. Similar programmes have a broad space, once the business models mature,it can drive the development of low-carbon data centre.
Experts believe that the development trend of refrigeration systems in the data center will develop as follows.
First, the programme of energy-saving and energy-saving room air conditioning equipment will be very popular. With the concept of green data center people, saving energy of refrigeration system has received unprecedented attention. Refrigerationsystem is a big data center power consumption, accounting for about 30%~45% ofenergy consumption of the entire system. optimization of ventilation layouts, hot and cold, hot and cold channel-channel isolation and intelligent group control, use ofoutdoor programmes has shown a flourishing natural cold source.
In terms of energy-saving room air conditioning equipment, variable capacity compressors, highly efficient energy-saving EC fans, intelligent control, using natural cooling source technology makes the engine room air conditioner energy efficiency andadaptability are stronger and stronger. In terms of temperature and humidity set, ASHRAE in the 2011 version of the recommended temperature range is 18 ~27 ℃, recommended humidity range greater than 5.5 ° c dew point temperature relative humidity is 15 ℃ dew point temperature and relative humidity of less than 60%. Relaxing the requirement in ensuring the normal operation of the engine room at the same time, can reduce computer room cooling, heating, humidification and dehumidification of energy consumption, reduce energy consumption and increase energy efficiency of room air conditioning systems.
Second, dynamic cooling can meet virtualization requirements. Data center virtualization server equipment, such as the heat will have greater volatility, including changing across time and space. This would in turn require refrigeration system to adapt to this trend, to be able to provide dynamic cooling solutions, and meet the needs ofdifferent time and space. At present, the main application technique variable-capacity compressor, air intelligent adjustment technology (temperature or air pressure control) and refrigeration.
Third, the high heat density cooling will be the inevitable way for the developmentof the data center. With the development of data centers and servers, high heat density cooling demand has been growing, and will in the next few years to gradually penetrate into the types of data centers. High heat density cooling on the programmes and equipment and traditional programme differs, cooling the end closer to theheat source, so as to provide more cooling capacity and lower operating costs.
Finally, flexibility to adapt to a modular data center cooling systems. Modular data centers need to cool the system can exactly match their needs, which makes it harderfor existing products to meet the requirements, to be upgraded or customized product is the direction of its future development. For example, some companies use container data center as a carrier of its modular design. After a container data center design, if you need to build most of the infrastructure, such as air conditioning and distribution can be factory installed, transported to the site servers and other equipment after installation and commissioning. This guarantees that data center construction of low-cost, fast, flexible, and other requirements.