To realize the energy saving of IDC room

In the IT industry, the computer room generally refers to the telecommunications, Netcom, mobile, dual-line, power and government or enterprise, storage minicomputer, server, for users and staff to provide http://www.aliyun.com/zixun/aggregation/13543.html " >it Service Place, small more than 10 square meters, generally placed one to two cabinets, large thousands of square meters placed thousands of cabinets, or even more, the room is usually placed in a kind of server and minicomputer, such as IBM minicomputer, HP minicomputer, Sun minicomputer, and so on, room temperature and humidity as well as anti-static measures have strict requirements, non-professional project personnel generally can not enter, the server in the engine room running are important business, such as mobile MMS, short message, call business, the user's data are stored in the computer room storage. Room is very important, no room, work, life will be greatly affected, so each room must have professional management, to ensure the normal operation of the business!

In recent years, the Internet Data Center (IDC) business development has shown a good upward trend. Some of the best quality, good location of the room, but also as the quality of the real estate, often opened on the sold. However, the high operating costs (including electricity, personnel, equipment procurement, etc.), compressed the IDC business profit margin. Some rooms even have a situation where electricity costs are half as high as business income. In this case, the energy-saving of the computer room is not to cope with the superior, but has become a real problem involving interests.

IDC Room energy consumption is mainly divided into four: server and communication equipment, electricity, refrigeration electricity, power supply system energy consumption, lighting and office electricity. The proportion of each room is different. In general, the first two accounted for the big head, each for 40%~50%, after both accounted for the small, each for the 5%~10%.

To improve the thermal management of computer room and reduce refrigeration energy consumption

Refrigeration power consumption is one of the big head of the computer room. There are many factors affecting refrigeration efficiency, and reducing refrigeration energy consumption can be started from many aspects. It is an important aspect to do well the heat management of the computer room.

First of all, improve the room sealing is to improve the refrigeration efficiency, reduce energy consumption, the prerequisite, should do a good job of wall, roof, floor, cable out of the entrance of the seal work, the window closed or affixed heat insulation film, reduce unnecessary personnel in and out.

Secondly, whether the air flow in the room is scientific, is the key to the effective operation of refrigeration system, attention to the following points can optimize airflow direction.

--Adopt the way of lower air supply and back wind. This way, the air return of the hot wind, natural rise, will not be mixed with the wind blowing, is currently recognized by the industry more efficient way to send, return air, through the "back-to-back, face-to-face" rack arrangement to avoid the "cascade heating" phenomenon. "Cascade heating" means that because all racks are forward cold, after the hot air, the front row rack out of the hot air by the back of the rack inhalation, by row heating, and eventually in the computer room after the formation of overheating area, if the cabinet to put the way to "face-to-face, back-to-back" way, the room will naturally form the gap between the cold and hot air channels. In this way, the heat will be localized in the hot air channel, easy to control.

--Plan the airflow direction inside the rack. First, the airflow should be avoided. In the rack should set aside the cold wind free rise of the channel, to avoid the equipment will be sent down completely cold air block. Secondly, airflow disorder should be avoided. For example, there are large spaces in the rack, it is easy to create hot and cold wind mixing. At this time, should be placed in the Space rack baffle (blind plate) to prevent hot air reflux.

--wiring neatly. For the next Air supply mode, it is best to use the way up. If the overhead floor must be under the line, the cable should also be collected neatly, do not block out the tuyere. Furthermore, "local hotspot" is a problem that should be paid special attention to in the heat management of computer room. With the server-intensive, miniaturization, high efficiency development, the data center may appear high thermal density of the rack. These high-density racks form a local hotspot in the room and become a thorny problem affecting refrigeration efficiency.

--strict power rationing, to eliminate "hot spots." Limit the rack current to a fixed value and eliminate the emergence of high-density racks from the source. However, with the development of IT industry, the emergence of high-density racks become inevitable, blindly keep customers outside the door, as well as adapt to development, thinking about countermeasures.

Rational layout and deal with "hot spots". When there is a particular equipment in the rack energy consumption is particularly large, it can be placed in the lower part of the rack, rather than the upper side, when there is a small number of high density rack in the room, you can make it in the whole room evenly distributed, rather than gather together.

--In the machine room to draw exclusive high density sub-zone, isolation high density rack. This high density rack will not affect the surrounding low-density racks. In a closed small range, targeted refrigeration, compared to the entire room for refrigeration efficiency.

--The use of embedded refrigeration devices, that is, directly installed in the rack, the "hot spot" can be more accurately refrigeration, such as the installation of water storage on the rack of the back plate, through the flow of water to take away the heat in the rack.

Use resources to improve refrigeration efficiency

On the basis of doing well the heat management, exploiting some new refrigeration resources which can be used, or exerting the efficiency of the original refrigeration resources, is another way to reduce the energy consumption of refrigeration room.

One is to improve the refrigeration efficiency of air-conditioning itself. For example, the use of air-conditioning energy-saving additives, improve the air-conditioning due to the long-term operation of the internal components of the wear and loss of efficiency; the air-conditioning frequency conversion, the air-conditioning can be dynamically adjusted according to the change of the heat load accurately adjust its output power, this can save energy, but also prolong the service life of the compressor; Considering the obsolescence of old equipment, Analysis of the air-conditioning equipment in the network, the elimination of many problems, inefficient old equipment, the acquisition of new equipment, in the short term is to increase investment, long-term results are energy saving.

The second is to reduce the need for refrigeration space. The larger the volume of the engine room, the worse the refrigeration effect. In the computer room construction, will often consider the future expansion. If the expansion opportunities do not come immediately, should not use the free space isolation.

Third, the use of external cold source. The external cold is free resources, if can be used, will be economical and energy-saving means. For example, the use of outdoor cold air system. When indoor and outdoor temperature reaches a certain temperature difference, through the introduction of outdoor fresh cold air, to meet the refrigeration needs. The system has high upfront cost and is not applicable in the South and sand-blown areas, and should be deployed in a comprehensive consideration of local conditions. such as the use of soil heat dissipation. The heat exchanger is buried in the normal temperature of the local average temperature of the room temperature layer, the heat can be dispersed through the soil. If there is groundwater nearby, it can also be used as a cold source. However, due to the normal temperature layer depth is usually 10 to 20 meters underground, its construction is difficult, the current application in the telecommunications room is less.

Four is the storage of energy-saving, such as the use of the night grid idle electric ice, in the grid busy for cooling. This not only utilizes the idle time the cheap electricity, also may reduce the busy time refrigeration electricity The burden, enables the electricity also to be able to carry on the load balance in the hour. Another example is the use of refrigerant storage at room temperature where phase change occurs. When the temperature at night is low, the refrigerant freezes and cools, and when the temperature is high during the day, the refrigerant melts to absorb heat and plays a cooling role.