With the take-off of human economy and society, the material life is very rich. The utilization of fossil energy has pushed the progress of human society into the fast lane and brought a high degree of prosperity. At the same time, its side effects, such as environmental pollution, Greenhouse Effect and so on, have also had a potential and long-term impact on the ecosystem.

In order to achieve the sustainable development of human society, on the one hand, we should develop renewable energy and clean energy to replace non renewable fossil fuels; on the other hand, we should save existing resources and improve their utilization rate. The research and development of renewable energy is not enough to replace fossil fuels for a long time, so energy conservation in all walks of life is particularly important. With the growth of global communication demand, the telecom industry is developing rapidly. However, the daily operation of the telecommunications industry needs to consume a lot of energy and make a significant contribution to the destruction of the ecological environment.

In order to ensure the normal, safe and continuous operation of communication equipment and its accessories, such as power supply, battery, data processing and signal transmitting equipment, monitoring equipment, etc., it is necessary to keep the temperature, humidity and cleanliness of the computer room within the allowable working range of the equipment in the communication base station, computer room and other places in the telecommunication industry. Therefore, air conditioning is often used to maintain the required artificial environment of the computer room. Taking the base station room as an example, the air conditioning energy consumption required to maintain the room temperature and humidity environment accounts for 40% - 50% of the total energy consumption; the air conditioning energy consumption also accounts for a large proportion in large data center due to the dense equipment and large heat dissipation. At present, most of the air-conditioners in the computer room are ordinary comfort air-conditioners with low energy efficiency ratio, so there is a general mismatch between the air-conditioners and the computer room. In addition, the number of base station rooms is large, the heat dissipation of equipment is high, and the cooling load of air conditioning is large, which has great energy saving potential.

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 telecommunication industry. The transformation of energy consumption equipment, the adoption of new technologies, the improvement of energy utilization rate, and the matching and monitoring of energy consumption equipment can greatly reduce the power consumption of telecom enterprises and relieve the shortage of power supply; many telecom operators have realized the urgency of energy conservation and emission reduction, and started to promote some pilot work to explore the technical scheme and feasibility of energy conservation.

In recent years, telecom operators around the world began to prefer a new type of energy-saving cooperation mode - EPC energy performance contracting, which is a new energy-saving business mode based on market operation in cooperation with professional energy-saving service companies, to pay all costs of energy-saving projects with reduced energy costs. This kind of energy-saving investment mode allows operators to upgrade the equipment room and base station for future energy-saving income, directly reducing the operation cost. 

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

l Energy saving-benefit sharing type

Energy saving benefit sharing contract refers to the type of contract in which energy-saving service companies and operators share the actual energy-saving benefits according to the agreed proportion during the contract period.

Section energy assurance 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 both parties confirm that the promised energy-saving benefits have been achieved, the energy-saving service company obtains the relevant expenses paid by the operator (such as service fees, investment, reasonable profits, taxes, etc.); if the promised energy-saving benefits have not been achieved, the energy-saving service company shall make up or compensate the operator according to the contract.

l Energy cost custody type

During the term of the contract, the operator shall entrust the energy-saving service company with the operation management and / or energy-saving transformation of the energy system in accordance with the agreed energy cost.

Financial lease type

The lessor financing provides 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 operator pays the rent for the energy-saving benefits generated by the energy-saving equipment.

At present, there are many professional companies that carry out the energy-saving transformation of base stations and computer rooms in the communication industry, but most of them are small in scale and single in technology. Their technical scheme can only be aimed at one aspect of the energy consumption computer room, and cannot comprehensively analyze the overall energy consumption characteristics. To improve this, we need 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 the situation of communication equipment, climate conditions, building conditions, and energy resources in the area where they are located, to put forward the overall transformation plan, to achieve the overall energy-saving effect and improve the energy-saving efficiency. Communication equipment: about 70% of the energy input of the communication equipment in the telecommunication industry is distributed in the form of thermal energy, and only less than 30% of the energy input is used for signal and data transmission. Temperature control system: the temperature to maintain the stable operation of the computer room throughout the year is 18-28 degrees, the temperature control system and communication equipment occupy about 95% of the energy consumption of a computer room, and the temperature control system has the greatest potential for energy saving. At present, frequency conversion air conditioning and intelligent ventilation system are the most popular technologies. The influence of the wall is easily neglected in the temperature control system. In winter and summer, only under the control of intelligent ventilation system, the indoor high temperature can be discharged, saving air conditioning work, energy-saving space will be 70%. In summer, when the outdoor temperature is higher than the indoor temperature, the thermal conductivity energy of the wall material will have an impact on the indoor temperature, and the function of frequency conversion air conditioning will be reflected at this time. There will be about 30% energy-saving space in summer. Generally speaking, the overall energy saving of the whole year is between 30% and 50%. Lighting and auxiliary system: for a computer room, the energy consumption of the lighting system is about 5%. In unattended computer rooms, energy saving can be achieved by the combination of sound control switch and common switch.

ZTE energy (Tianjin) Co., Ltd. provides a comprehensive solution from 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 operation characteristics of the telecommunications industry. Especially the two systems of energy supply and energy consumption monitoring have obvious technical advantages. Energy supply system: wind and solar power generation technology can be considered in some areas where there is a lack of power resource label and high cost of power supply equipment; fuel cell technology can be considered to save energy utilization cost in areas where there is sufficient power. According to the data provided by the operator, ZTE energy (Tianjin) Co., Ltd. can analyze and calculate the wind / light complementary power supply system, and provide a complete and feasible power supply scheme. Energy consumption monitoring system: through energy planning, energy monitoring, energy statistics, energy consumption analysis, key energy consumption equipment management, energy metering equipment management and other means, the energy management system enables managers in the telecommunications industry to accurately grasp the proportion of energy cost and development trend of electric fields such as computer rooms.

Compared with the traditional operation mode of energy-saving projects, the energy-saving projects provided by ZTE energy (Tianjin) Co., Ltd. have the following advantages: zero investment of customers, low operation cost, zero risk of customers, etc. Through reducing the energy consumption of communication industry, saving non renewable energy, protecting the ecological environment, realizing green communication, and creating clean communication channels for human beings.