Central large enterprise groups occupying the largest proportion and lifeline of China's economy, and also a major energy consumer. They have been assessed by the government for energy conservation and emission reduction, so these central large enterprise groups will quickly save energy. The indicators for emission reduction are decomposed at different levels and are used as key assessment projects. At the same time, enterprises also hope to achieve long-term cost reduction through the “Green Action Plan” through energy conservation and emission reduction, and achieve the company's goal of rapid, healthy and sustainable development.
IDC energy consumption characteristics
The electronic and network development of business and management, leading to the support, operation and storage of important data of key business of the enterprise, can not be separated Data Center (IDC), so IDC is now rapidly growing and building in large numbers. However, due to the concentration of equipment and the large number of mainframes, IDC has become a major power user. According to preliminary statistics, the electricity consumption of telecom operators accounts for about 87% of the company's total consumption, and about 73% of 87% of the electricity consumption is consumed in base stations and computer rooms. According to our measurements of a telecommunications building in Xi'an, the power consumption of UPS and air conditioners in the IDC room exceeded 80% of the electricity consumption of the entire building, while the IDC room area was less than 5% of the building.
IDC room but it is difficult energy, more and more processing capability of the server, increasing the capacity of data storage devices and network devices, consume more power. The more integrated the equipment, the more concentrated the heat, which makes the temperature control of the equipment room a big problem. If the problem of air conditioning in the IDC room and the heat dissipation in the equipment room is solved, the problem of power consumption in the IDC room can be effectively alleviated. Only research on new technologies and new methods to reduce the energy consumption of the equipment room, and strive to improve the heat dissipation efficiency of the equipment room and reduce the overall energy consumption of the IDC equipment room by rationally selecting the server rack, rationally planning the heat dissipation, optimizing the design, layout and use of the equipment room. In order to achieve the goal of energy saving and emission reduction.
energy-saving and safety
IDC room carrying the company's core and critical business data. As the company grows, the data that needs to be processed and stored grows geometrically; new services emerge in an endless stream and require more data processing equipment to support it. Any loss of data processing and storage devices will not only cause huge economic losses for enterprises, but also affect the brand image of enterprises. Data processing and storage devices require better power quality and temperature and humidity than ordinary devices. Therefore, enterprises have made great efforts for the stable and reliable operation of IDC equipment rooms. The power supply mode has evolved from UPS stand-alone, 1+1 parallel to N+M parallel and dual bus. The power supply availability has increased from 90% of the stand-alone to 99.9999% of the double bus, and is moving in a higher direction. Higher power availability is not enough to improve by technology alone. With 20 years of unremitting efforts in the UPS industry worldwide, the reliability of UPS stand-alone has only increased from 90% to 98%. Higher power supply availability is only guaranteed by more redundancy, and redundant UPS must reduce the average load per UPS and reduce its operating efficiency, thus increasing energy consumption. However, if you reduce the UPS redundancy to reduce energy consumption, you need to be more cautious. If the availability or redundancy of the power supply system exceeds the planning and design requirements of the IDC equipment room, you can consider appropriate reduction; if the UPS power supply system has just reached the s Can not fully meet the power supply availability requirements of the IDC room, and then reduce the redundancy of the UPS to save energy is to pay for the end, not worth the candle. Improve the integration of the engine room equipment
IDC, it has the power of a single rack improved significantly. The desktop server rack power is 1.5kW, the modular server rack power is 5kW, and the latest blade server rack power is now up to 15kW. High power consumption will inevitably lead to high heat generation, so the air conditioning demand in the IDC engine room has also increased significantly. In the desktop server era, because the unit power density is low, even if there is a problem with the air conditioner, the temperature of the equipment room will not rise to the limit temperature quickly, and the maintenance personnel have sufficient time to repair the air conditioner, so there is almost no requirement for air conditioning redundancy. However, in the era of modular servers, the requirements for the availability of air conditioners are different. The short-time shutdown or insufficient cooling capacity of the air conditioner will quickly increase the temperature of the equipment room to the limit temperature. There used to be a computer room, and three air conditioners were broken. After half an hour, the temperature of the equipment room reached 40 °C, and all the servers were alarmed or even stopped. Now it is a blade server. In the past, the air conditioning cooling method has not been able to effectively solve the heat problem in the rack. Therefore, the goal of reducing the redundancy or configuration of air conditioners to achieve energy savings is also a great risk.
energy-efficient universal principles
at IDC room to ensure the safety of the premise, there is still the possibility of energy-saving and space. Because the factors affecting IDC energy consumption are not only the number of UPS and air conditioners, there are more factors to consider, so when planning the construction of IDC equipment room, it needs to be fully considered. Following principles can contribute to energy conservation:
(1) low-power consumption large selection device
IDC room server, data storage and other data processing devices, data devices If the power is large, more UPS is needed to supply power. The UPS needs a certain amount of energy in the power conversion, and the power is also lost in the transmission and distribution. More than 90% of the electricity used in data equipment is eventually converted into heat, which requires more air conditioning to dissipate heat. According to statistics, for every 100W of power consumption of data equipment, 10~20W will be lost in power conversion and distribution, and air-conditioning refrigeration will increase power consumption by 120W, so the energy consumption of data equipment is amplified several times. In equipment that meets business needs or handles storage capacity, the choice of low power is undoubtedly the key to energy conservation and emission reduction.
(2) the appropriate choice of power supply solutions and power supply equipment
IDC engine room is important, but not to say that all devices in the IDC room are equally important, we need more than 99.9999% of supply availability. Therefore, effective and reasonable distinction is made between the electrical equipment in the IDC equipment room, and different levels of power supply availability and power supply schemes are formulated to avoid useless power supply capacity and power supply equipment redundancy, which reduces the investment of the power supply system and reduces the operating energy. Consumption.
(3) air conditioning unit suitable cooling mode and operation mode
While running air conditioning units need to consume energy, but a different way of cooling energy consumption is not the same. Different refrigerants and different operating modes may produce considerable energy savings. For example, cold air in winter in the northern region can be used for cooling in the computer room (not directly introducing outdoor air), dry air in the northwest can be used for cooling, and the chilled water in the building is more energy efficient than the refrigerant in the unit itself.
(4) heating and cooling equipment in the equipment room and rational distribution of airflow
IDC tissue is not one to one room, the air flow through the heat entrained in the machine room. The inappropriate layout of the equipment room and the installation method of the equipment hinder the movement of the airflow, reduce the heat dissipation effect, and consume more energy; the ultra-long distance, the superior air supply requires a more powerful fan, and consumes more energy. Therefore, instead of stacking air conditioners and heating equipment with sufficient cooling capacity in one machine room, the heat balance problem is solved.
(5) Special equipment special treatment equipment
IDC main room is not necessarily the same heat, heat a large difference between different times of the server, the same way the heat will not hot and cold Both not only consume more energy but also bring other problems. For high-density heating equipment, special cooling cabinets and heat dissipation methods should be used so that the temperature of the equipment room is too low to take care of individual high-heating equipment.
(6) to prevent the leaking
IDC room Mifengbuyan, good insulation effect, it is the focus of energy consumption. The doors and windows of the IDC engine room should be sealed and well insulated. The walls, floors and ceilings should be insulated. Especially in the south, the high temperature in the summer is long, and the heat transferred from the outer wall should not be underestimated. This is the main reason why some IDC rooms have no problems in winter and the summer temperature is high. In different seasons, the heat generated by the main equipment usually does not differ too much.
more than a few principles apply not only to guide the construction of the new terminal, the same also applies to energy-saving guidance of the old room. The difference is that the construction of the new computer room is drawn on a piece of white paper, and the six principles can be fully applied; the old computer room reconstruction should be based on the existing facts, and the actual situation is not allowed to rely on the gourd painting, which should be investigated first. With the specific situation of the IDC engine room, a targeted transformation plan will be formulated according to the six energy-saving principles.