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  • To cope with climate change, developing clean energy is the only way 2017-08-17
    To cope with climate change, developing clean energy is the only way

    To cope with climate change, developing clean energy is the only way In recent years, with the large-scale exploitation of fossil energy in the global scope, leading to environmental pollution, climate change and other issues have become increasingly prominent, extreme weather events, summer drought and flood prone, brought a serious impact on the development of all countries. As a major challenge facing the sustainable development of human society, climate change has attracted more and more attention from the international community, and the development of clean energy has become a common choice in the world to deal with climate change.  The United Nations Intergovernmental Panel on climate change (IPCC) latest assessment report on global climate change indicates that the average surface temperature is higher than before the industrial revolution increased by 0.79 degrees, and in the future, will also accelerate the trend of serious global warming trend has become an indisputable fact.  As the world's largest consumer of energy and one of the largest emitters of greenhouse gases, China bears an irreplaceable task in tackling the world's climate change. In recent years, under the pressure of environmental pollution and economic transformation and upgrading, China has made positive achievements and has made remarkable achievements in tackling climate change. In 2014, China's energy(Solar Power system ) consumption per unit of GDP and carbon dioxide emissions decreased by 29.9% and 33.8% respectively over 2005. Such achievements benefit from the unremitting efforts in the field of clean energy. At present, China's hydropower, wind power installation and nuclear power construction scale are all the first in the world, and the PV assembly is expected to rank first in the world this year.  In June this year, China government submitted its national climate change independent contribution to the United Nations Framework Convention on climate change secretary office (INDC) file "to strengthen climate change action -- Chinese national independent contribution", to determine the 2030 carbon dioxide emissions per unit of GDP fell 60% in 2005 to 65%, non fossil energy accounted for a proportion of energy consumption 20% new target.  Affected by energy resources endowment, China's energy consumption is dominated by coal, and clean energy accounts for a lower proportion of primary energy consumption. Some experts predict that if you want to reach the goal of commitment to the United Nations, in the period from 2016 to 2030, new nuclear power installed capacity of 100 million kilowatts of hydropower installed capacity of 150 million kilowatts, solar power installed capacity of 300 million kilowatts and 400 million kilowatts of wind power capacity, the formation of a huge system of low carbon industrial development. Therefore, it is the only way for China to tackle climate change and realize sustainable development by vigorously developing cl...

  • China 's solar industry employment 2017-07-29
    China 's solar industry employment

    According to the US Cable News Network website reported on July 18, with the Trump government to let the United States out of the Paris climate agreement, Beijing is investing heavily in clean energy and creating millions of jobs. Even in China, where coal has dominated or dominated, the government is already aware of the future economic opportunities in the field of clean energy," said Lin Minchin, director of climate and energy policy at the American Society for Conservation of Nature. According to the latest annual report of the International Renewable Energy Organization, only 2.5 million people in China in the solar industry work, compared to the United States only 260,000 people work in the solar industry.Reported that President Trump promised to achieve re-employment of coal miners at the same time, China is moving in the opposite direction. Reported that coal still accounts for a major part of China's energy consumption, but Beijing has begun to close coal mines, and last year set plans to cut the coal industry about 1.3 million jobs. The Chinese government has also taken action to limit the construction of new thermal power plants. In addition, China's National Energy Board announced the goal of reducing the proportion of coal consumption, but also set the 2030 clean energy consumption accounted for 20% of the target. Analysts expect China to easily accomplish this goal. Green peace’s report earlier this year pointed out that China's clean energy consumption in the end of 2015 rose to 12% of total energy consumption. According to official statistics, the United States accounted for about 10% of total renewable energy consumption.China promised to invest 2.5 trillion Yuan in renewable energy by 2020, in order to achieve the 2030 target, China is investing heavily in renewable energy. It is expected that these investments will create about 10 million jobs in the sector. According to the International Renewable Energy Organization, China's clean energy sector has 3.5 million jobs, is clearly the world's most jobs in the country. Reported that China has become a major manufacturing and renewable countries, renewable energy technology, about two-thirds of the world's solar panels are provided by China. China has also made great achievements in wind energy, creating nearly half of the world's wind turbines. China's hottest new project is a large floating solar power plant in Anhui Province, the world's largest floating solar panel facilities. According to the construction of the power plant Sunshine Power Co., Ltd., said the power plant for the production of 15,000 households.Reported that the solar power plant floating below the surface of the past was a coal mining subsidence area, so that the concept of solar panels floating up quickly is popular, because the solar industry has always faced a problem - the site.

  • Different Types of Inverter Cooling Technology 2017-07-21
    Different Types of Inverter Cooling Technology

    With the increase in photovoltaic inverter power, the thermal design requirements are getting higher and higher. The designer must take into account the heat dissipation, protective, installability, maintainability, and economic costs of the inverter cooling system.Inverter cooling technology includes natural cooling, forced air cooling, liquid cooling, relative cooling and so on. 1. Natural cooling The natural cooling relies on the temperature rise to produce the buoyant force to drive the air for convective heat dissipation. Advantages are low maintenance requirements, high degree of protection. The disadvantage is that it will be affected by the radiator, bulky, heavy weight. 2. Forced air cooling Forced air cooling through the fan-driven air flow. Advantages are small size, light weight. The disadvantage is the addition of moving parts to the fan. 3. Liquid cooling The liquid cools through the pump to circulate the coolant in the heat sink. Advantages are good heat dissipation, low temperature. The disadvantage lies in the complexity of the system structure, poor economy, there is the risk of leakage. 4. Relative cooling Relative cooling depends on the evaporation of latent heat in the liquid medium. Advantages is high thermal efficiency. The disadvantage is that the media loop sealing requirements are high, the process is complex and the economy is poor. Studies have shown that forced air cooling efficiency is 10 to 20 times the natural cooling, more efficient cooling methods are liquid cooling. From the structural complexity and the difficulty of the realization of view, forced air cooling system than the liquid cooling system is simple, easy to achieve, high reliability. Thus, in the power industry, it’s preferred forced air cooling mode, followed by natural cooling, liquid cooling and other cooling methods. Normally, the electronic components allow the operating temperature rise in the range of 40 to 60 ° C. Use forced air cooling, comprehensive performance and higher cost. When the heat flux continues to increase, you need to choose other cooling methods such as liquid cooling. For the power of several MW in a large wind energy converter, cooling methods are selected liquid cooling; power between 100KW to 1MW of centralized photovoltaic inverter, cooling mode for forced air cooling; and power from a few kilowatts to several 10 kilowatts of string-string photovoltaic inverter, according to stand-alone power from small to large, thermal design from natural cooling to forced air cooling. The theoretical analysis into the actual product in the cooling program on the comparison of choice, scientific guidance group string PV inverter in the product design of the cooling program applications. When the power is less than 20kW, the use of natural cooling can achieve the product size, weight and overall performance of the optimal match; when the power is greater than 25kW, the heat flow density is large, forced air cooling is more economical and e...

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Anhui JNGE POWER Co.,LTD is a high-tech enterprise with more than 10 years experience, specializing in solar, wind  and other renewable energy power products. Our main products are pure sine wave inverter, pure sine wave DC-AC  hybrid inverter and controller all in one,solar charge controller, wind-solar hybrid controller, MP...

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