In December 2009, the 15th Conference of the Parties to the United Nations Framework Convention on Climate Change was held in Copenhagen, Denmark, and the Copenhagen Accord was published. According to the agreement, industrialized countries should submit economically quantified 2020 emission targets to the Convention Secretariat by January 31, 2010, and developing countries should submit climate change mitigation initiatives planned for sustainable development.
Energy saving and emission reduction is a major measure to implement the scientific development concept and build a harmonious society. It is an inevitable choice for building a resource-saving and environment-friendly society. It is the only way to promote economic structural adjustment and change the growth mode. It is to safeguard the long-term interests of the Chinese nation. Inevitable requirement. China ’s “Eleventh Five-Year Plan†outlines that the energy consumption per unit of GDP during the “Eleventh Five-Year Plan†period will be reduced by about 20%, and the total emissions of major pollutants will be reduced by 10%.
The energy consumption of communication systems is increasing year by year, and the information industry has become the fifth largest energy-consuming industry in the world, and it is urgent to vigorously promote energy conservation and emission reduction. As early as two years ago, the former Ministry of Information Industry declared that as far as the communications industry is concerned, China's communications industry consumes more than 20 billion kWh annually and has become a high-energy-consuming industry. Paying attention to energy saving and emission reduction of the communication system not only helps operators save costs, but also realizes the transformation of growth mode and improves the sustainable development capability of enterprises. At the same time, energy saving and emission reduction are also social responsibilities that operating companies should undertake.
Since Chapin and Pearson first developed practical monocrystalline silicon solar cells at Bell Labs in 1954, after more than half a century of development, crystalline silicon solar photovoltaic modules have become mature commercial products. The application of solar photovoltaic power generation in the field of communication power supply has also been explored for many years. Because solar photovoltaic power generation has the characteristics of not being restricted by regions, compared with other "green" energy sources such as wind power generation, solar photovoltaic power generation occupies the most important position of energy saving and emission reduction of communication systems.
ZTE has accumulated rich experience in the application of solar photovoltaic power supply. In the overseas communications projects that have been executed, the total capacity of solar photovoltaic power generation on the grid has exceeded 10 megawatts (1 megawatt = 106). In June 2009, ZTE was invited to provide a solar photovoltaic power supply solution for mobile communication base stations of the Shanghai World Expo venues. In line with the principle of maximizing energy conservation and emission reduction and making full use of solar energy resources, the "best use" solar photovoltaic power supply solution is especially recommended.
The characteristics of the mobile base station of the World Expo venues for solar power supply are as follows.
â— Social benefits need to be considered to minimize the annual carbon emissions.
â— The monthly solar radiation varies greatly in Shanghai.
â— Base station power consumption in hotspot communication areas is relatively large.
â— The component installation method needs to be designed according to the existing building conditions.
â— The reliability of communication power supply is particularly high.
The power consumption of communication equipment is shown in Table 1.
The geographical location of Shanghai is 31 ° 13 â€48†N latitude, with an average altitude of 7m. The meteorological data is shown in Table 2.
According to the design principle of the "best use type" solar photovoltaic power supply solution, the installation angle of the photovoltaic array is designed according to the maximum solar radiation that can be received throughout the year, to maximize the use of solar energy resources and reduce carbon emissions. The insufficient solar energy is provided by the city power, ensuring that the base station power supply CAPAX (capital expenditure) and OPAX (operating expenditure) are the lowest. According to the battery backup power supply time of 3 days, the battery capacity is designed to extend the battery life and high reliability of power supply.
From this calculation, the optimal tilt angle of the solar square array is 30 ° (towards the south). Furthermore, the daily average solar radiation energy at different tilt angles can be plotted as shown in Figure 1.
Through a series of calculations, the solar photovoltaic module configuration requires 40 pieces of 175Wp, and the battery pack is configured with 3 sets of 800AH gel batteries (GEL). Then, verify the capacity configuration of solar photovoltaic modules.
As can be seen from Figure 2, in the "best use" solar photovoltaic power supply scheme, solar photovoltaic power generation only meets the load consumption in the month with the most solar radiation, while the power generation in other months is not enough to maintain the load power supply. The part of the solar photovoltaic power generation that is not enough for the load power consumption is automatically supplied by the city power supply through the control of the solar charge and discharge controller in the power supply system. The supplementary power supply of the city power accounts for only 8% of the total power consumption of the load, indicating that this scheme makes the most of the solar photovoltaic power generation capacity. Solar photovoltaic power generation accumulatively supplies 8488.3kWh to the load throughout the year. According to the average carbon emission required per unit of power generation, 0.785kg / kWh, the annual CO2 emission can be reduced by about 6,700kg, which is equivalent to reducing the combustion of about 4,800kg of coal.
The start-up battery is the soul of your vehicle. It starts the Engine, and generates the energy necessary for the operation of all other vehicle's electric aspects. But did you know that it only has two years of life approximately? Since during the unloading process and float charging, the battery's negative plate is sulphated fast, Reducing the functional capacity of the battery, until its complete inoperative. That's why we present the start-up Battery Pulse Protector. We offer you a fully automatic battery maintainer and protection system, it works 24 hours a day. Battery protector is not a battery charger. It is a patented electronic Sulfuric Crystal Cleaner which will eliminate the battery sulphation which is the main cause of problems and failures in lead acid start-up batteries. This battery pulse desulfator keeps the battery's condition as new, provides faster starts up your car or truck. Extends battery lifespan up to two or more times and reduce recharge time. Increase the capacity for your charge to last longer between recharges. Helps to protect the environments because it reduce the number of batteries that are discarded every year.
How is it installed? Lugs connect directly to the battery terminals.
Designed especially for frequently-charged 12-Volt battery systems, the 12V Battery smart pulse protector and pulse maintainer ensures maximum performance on both single 12-Volt lead-acid batteries as well as two or three 12-Volt batteries connected in parallel. The battery pulse protector is ideal for any kind of vehicle or UPS with a 12-Volt battery system that is charged on a regular basis, including cars,trucks, ships, emergency vehicles,military battery backup power and vehicles in sudden war,wind and solar power battery, motor, UPS.
Start-up Battery Protector,Start-up Solar Battery Protector,Start Up Battery Regenerator,Car Battery Intelligent Protector
Shenzhen Daceen Technology Co., Ltd. , https://www.daceen-sz.com