Prospects for energy saving in the communications industry

With the rapid development of human economy and society, material life is greatly enriched; the use of fossil energy has pushed the progress of human society onto the fast lane and brought a high degree of prosperity; at the same time, its side effects: environmental pollution, greenhouse effect, etc. The system has a potential and long-term impact.

In order to achieve the sustainable development of human society, on the one hand, develop renewable energy and clean energy to replace non-renewable fossil fuels; on the other hand, save existing resources and increase its utilization rate. The research and development of renewable energy is not enough to replace fossil fuels for a long period of time. Therefore, energy conservation in all walks of life is particularly important. With the growth of global communication needs, the telecommunications industry has developed extremely rapidly. However, the daily operation of the telecommunications industry consumes a lot of energy and "contributes" to the destruction of the ecological environment.

To ensure the normal, safe and continuous operation of communication equipment and its accessories, such as power supplies, storage batteries, data processing and signal transmission equipment, and monitoring equipment, in telecommunications industry, such as communication base stations and equipment rooms, it is necessary to maintain the temperature, humidity and The cleanliness is within the allowable working range of the equipment, so air conditioners are often used to maintain the artificial environment required by the computer room. Taking the base station computer room as an example, the air conditioning energy consumption required to maintain the temperature and humidity environment of the computer room accounted for 40% -50% of the total energy consumption; due to the dense equipment and large heat dissipation of large data centers, air conditioning energy consumption also accounts for a large proportion. At present, most air conditioners in the computer room use common comfort air conditioners, which have a low energy efficiency ratio. Therefore, there is a general mismatch between the air conditioner and the computer room. Coupled with the large number of base stations, the high heat dissipation of the equipment, and the large cooling load of the air conditioner, it has great potential for energy saving.

Therefore, it is of economic value and social significance to carry out energy-saving transformation of high-energy-consuming links such as computer rooms and base stations in the telecommunications industry. Renovating energy-consuming equipment, adopting new technologies, improving energy utilization, and doing a good job in matching and monitoring energy consumption of energy-consuming equipment can greatly reduce the power consumption of telecommunications companies and ease the power supply shortage; many telecommunications operators have already been deeply Recognizing the urgency of energy saving and emission reduction, we began to promote some pilot work to discuss the technical solutions and feasibility of energy saving.

In recent years, telecom operators around the world have become fond of a new type of energy-saving cooperation-contract energy management (EPC-Energy Performance ContracTIng), this new energy-saving mechanism based on market operation in cooperation with professional energy-saving service companies is An energy-saving business model that uses reduced energy costs to cover the full cost of energy-saving projects. This energy-saving investment method allows operators to upgrade the future energy-saving benefits of equipment rooms and base station equipment, directly reducing operating costs.

The current model of contract energy management is mainly divided into the following four types:

l Energy-saving benefit sharing

Energy-saving benefit-sharing contract refers to the contract type in which the energy-saving service company and the operator share the actual energy-saving benefit according to the agreed ratio during the contract period.

lEnergy-saving guarantee type

During the contract period, the energy-saving service company guarantees to achieve the promised energy-saving benefits. During the implementation of the project, after the two parties confirm that the promised energy-saving benefits are achieved, the energy-saving service company obtains the relevant costs paid by the operator (such as service fees, investment and reasonable profits, taxes, etc.); Compensation or compensation shall be given to the operator according to the contract.

l Energy cost trusteeship

During the contract period, the operator entrusts the energy-saving service company to carry out energy system operation management and / or energy-saving transformation according to the agreed energy cost.

l Financial leasing

The leasing transaction is financed by the lessor to provide the lessee with the necessary equipment and has the dual functions of financing and financing. The energy-saving service company or leasing company leases the energy-saving equipment to the operator, and the energy-saving benefits generated by operating the commercial energy-saving equipment pay the rent.

At present, there are many professional companies engaged in the energy-saving transformation of base stations and computer rooms in the communications industry, but most of them are small in scale and single in technology. Their technical solutions can only target one aspect of the energy-using computer room, and cannot comprehensively analyze the overall energy consumption characteristics. To improve this, it is necessary to rely on large-scale enterprises with comprehensive technology, through targeted analysis of the energy consumption characteristics of base stations and computer rooms, combined with their communications equipment, climate conditions, construction conditions, and energy resources in their regions, put forward The overall transformation plan achieves the overall energy saving effect and improves the energy saving benefit. Communication equipment: About 70% of the energy input of the communication equipment in the telecommunications industry is distributed in the form of heat energy, and only less than 30% of the signal and data transmission is completed. Temperature control system: The temperature that maintains the stable operation of the computer room for 18 to 28 degrees all year round. The temperature control system and communication equipment occupy about 95% of the energy consumption of the computer room. The temperature control system has the greatest energy saving potential. At present, the more developed technologies are inverter air conditioners and intelligent ventilation systems. A link that is easily overlooked by the temperature control system is the influence of the wall. In areas where winter and summer are more obvious, only the indoor high temperature can be discharged under the control of the intelligent ventilation system in winter, saving air conditioning to do work, and 70% of the energy-saving space. In summer when the outdoor temperature is greater than the indoor temperature, the thermal conductivity of the wall material will affect the indoor temperature, and the role of the inverter air conditioner will be reflected at this time. Summer energy-saving space will be about 30%. Generally speaking, the overall energy saving for the whole year is between 30% and 50%. Lighting and auxiliary systems: For a computer room, the energy consumption of the lighting system is about 5%. In the unattended computer room, the combination of voice control switch and common switch can save energy.

ZTE Energy (Tianjin) Co., Ltd. provides comprehensive solutions in terms of temperature control system technology, energy supply system, building energy-saving technology, system redundancy processing, energy consumption monitoring system, etc. on the premise of fully considering the operating characteristics of the telecommunications industry. Especially the two systems of energy supply and energy consumption monitoring have obvious technical advantages. Energy supply system: In areas where the standard of power resources is scarce and the cost of power supply equipment is relatively high, wind and solar power generation technologies can be considered; for areas with sufficient power, fuel cell technology can be considered to save energy utilization costs. According to the information provided by the operator, ZTE Energy (Tianjin) Co., Ltd. can analyze and calculate the wind / solar complementary power supply system and provide a complete and feasible power supply scheme. Energy consumption monitoring system: The energy management system enables the managers of the telecommunications industry to control the energy costs of electricity rooms such as computer rooms by means of energy planning, energy monitoring, energy statistics, energy consumption analysis, key energy consumption equipment management, and energy metering equipment management. Proportion, development trends have an accurate grasp.

Compared with the traditional energy-saving project operation mode, the energy-saving project of contract energy management provided by ZTE Energy (Tianjin) Co., Ltd. has the following advantages: zero investment for customers, low operating costs, and zero risks for customers. By reducing energy consumption in the communications industry, saving non-renewable energy, protecting the ecological environment, achieving green communications, and creating clean communication channels for mankind.

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